Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Fix error output of boot instance creation failure

   Currently if a boot instance creation fails, instead of printing out
   the name of the instance that failed, it prints "(null)". That is
   because it prints "cur_str" that had already been processed by
   strsep(). Print the saved name instead.

   While at it, print the error code of the failure.

 - Fix use-after-free for same named historgrams

   Histograms can be named so that they can be used in multiple events.
   But if the named histogram has a variable attached, the second event
   that uses the named histogram which duplicates it and needs to free
   the original after duplication leaves the old variable in place and
   still visible. If another histogram uses than variable, it will use
   the stale one which will try to reference the freed duplicate
   histogram and crash the kernel.

   Free the duplicate variables along with the duplicated histogram
   data.

 - Check return value of kthread_run() in event self test

   The events self tests uses a kthread for testing but does not check
   if it succeeded in creating a kthread. If the kthread creation were
   to fail, the code will still try to call kthread_stop() on the error
   returned.

 - Fix race between reading trace_pipe and updating subbuffer size

   If a user is reading the trace_pipe file at the same time they update
   the ring buffer sub-buffer size, can cause the trace_pipe read to
   read stale data. Add trace_access_lock() around updating the ring
   buffer sub-buffer size.

 - Fix eventfs_inode on failure path in creation of the events directory

   In the creation of the "events" directory, if after allocating the
   eventfs_inode a failure is detected, it calls cleanup_ei() which
   calls free_ei(). The free_ei() will test if eventfs_inode being freed
   has no children. It is a bug if it does. But on the failure case of
   the creation of the "events" directory, the children lists have not
   yet been initialized and the free will trigger a warning because
   list_empty() on an uninitialized list returns false.

   Move the initialization into init_ei() where it makes more sense and
   makes sure that a created eventfs_inode has its lists initialized
   upon creation.

 - Check return value of kthread_run() in ftrace direct sample code

   The sample code that shows how to use the ftrace direct calls does
   not test the return of kthread_run() to see if it succeeds. Return a
   failure if the kthread_run() doesn't succeed.

 - Clear user events state on fork in case of alloc failure

   On fork, the child gets a pointer to the parent's user events state.
   It makes a copy of it then updates the child's pointer to it. But if
   the allocation fails, the duplication function leaves the child with
   a pointer to its parent's descriptor. When the child cleans up its
   data, it will free the parent's descriptor while the parent is still
   using it.

   In the duplication function, set the child's user_event_mm to NULL
   before testing if the allocation succeeded, and when it exits it will
   not free the parent's descriptor.

 - Fix retry exhaustion in simple ring buffer reader swap

   simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
   post-decrements it only after a failed link replacement. On the final
   attempt, a successful replacement leaves retry at zero, while a
   failed replacement leaves it at -1.

   But the check for success expects the retry value to be non-zero and
   exits with an error on zero. This is the opposite result. Fix it.

 - Fail nicely when the remote swap_reader_page() returns an error

   Currently, if the swap_reader_page() of a remote buffer fails, it
   triggers a WARN_ON_ONCE() and continues normally. Instead, have it
   exit with an error and a pr_warn() print instead of a full WARNING.

* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Stop remote reader update when page swap fails
  tracing: Fix retry exhaustion in simple ring buffer reader swap
  tracing/user_events: Clear copied tracing state before fork duplication
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
  eventfs: Initialize ei->children and ei->list in init_ei()
  tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
  tracing: Fix crash passing ERR_PTR to kthread_stop()
  tracing: Fix use-after-free with same-name named triggers
  tracing: Fix logged instance name on creation failure

11 files changed, 3908 insertions, 0 deletions

diff --git a/arch/mips/alchemy/devboards/Makefile b/arch/mips/alchemy/devboards/Makefile
new file mode 100644
index 000000000..10a52283f
--- /dev/null
+++ b/arch/mips/alchemy/devboards/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Alchemy Develboards
+#
+
+obj-y += bcsr.o platform.o db1000.o db1200.o db1300.o db1550.o db1xxx.o
+obj-$(CONFIG_PM)		+= pm.o
diff --git a/arch/mips/alchemy/devboards/bcsr.c b/arch/mips/alchemy/devboards/bcsr.c
new file mode 100644
index 000000000..8df0ccdc9
--- /dev/null
+++ b/arch/mips/alchemy/devboards/bcsr.c
@@ -0,0 +1,147 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * bcsr.h -- Db1xxx/Pb1xxx Devboard CPLD registers ("BCSR") abstraction.
+ *
+ * All Alchemy development boards (except, of course, the weird PB1000)
+ * have a few registers in a CPLD with standardised layout; they mostly
+ * only differ in base address.
+ * All registers are 16bits wide with 32bit spacing.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/init.h>
+#include <linux/export.h>
+#include <linux/spinlock.h>
+#include <linux/irq.h>
+#include <asm/addrspace.h>
+#include <asm/io.h>
+#include <asm/mach-db1x00/bcsr.h>
+
+static struct bcsr_reg {
+	void __iomem *raddr;
+	spinlock_t lock;
+} bcsr_regs[BCSR_CNT];
+
+static void __iomem *bcsr_virt; /* KSEG1 addr of BCSR base */
+static int bcsr_csc_base;	/* linux-irq of first cascaded irq */
+
+void __init bcsr_init(unsigned long bcsr1_phys, unsigned long bcsr2_phys)
+{
+	int i;
+
+	bcsr1_phys = KSEG1ADDR(CPHYSADDR(bcsr1_phys));
+	bcsr2_phys = KSEG1ADDR(CPHYSADDR(bcsr2_phys));
+
+	bcsr_virt = (void __iomem *)bcsr1_phys;
+
+	for (i = 0; i < BCSR_CNT; i++) {
+		if (i >= BCSR_HEXLEDS)
+			bcsr_regs[i].raddr = (void __iomem *)bcsr2_phys +
+					(0x04 * (i - BCSR_HEXLEDS));
+		else
+			bcsr_regs[i].raddr = (void __iomem *)bcsr1_phys +
+					(0x04 * i);
+
+		spin_lock_init(&bcsr_regs[i].lock);
+	}
+}
+
+unsigned short bcsr_read(enum bcsr_id reg)
+{
+	unsigned short r;
+	unsigned long flags;
+
+	spin_lock_irqsave(&bcsr_regs[reg].lock, flags);
+	r = __raw_readw(bcsr_regs[reg].raddr);
+	spin_unlock_irqrestore(&bcsr_regs[reg].lock, flags);
+	return r;
+}
+EXPORT_SYMBOL_GPL(bcsr_read);
+
+void bcsr_write(enum bcsr_id reg, unsigned short val)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&bcsr_regs[reg].lock, flags);
+	__raw_writew(val, bcsr_regs[reg].raddr);
+	wmb();
+	spin_unlock_irqrestore(&bcsr_regs[reg].lock, flags);
+}
+EXPORT_SYMBOL_GPL(bcsr_write);
+
+void bcsr_mod(enum bcsr_id reg, unsigned short clr, unsigned short set)
+{
+	unsigned short r;
+	unsigned long flags;
+
+	spin_lock_irqsave(&bcsr_regs[reg].lock, flags);
+	r = __raw_readw(bcsr_regs[reg].raddr);
+	r &= ~clr;
+	r |= set;
+	__raw_writew(r, bcsr_regs[reg].raddr);
+	wmb();
+	spin_unlock_irqrestore(&bcsr_regs[reg].lock, flags);
+}
+EXPORT_SYMBOL_GPL(bcsr_mod);
+
+/*
+ * DB1200/PB1200 CPLD IRQ muxer
+ */
+static void bcsr_csc_handler(struct irq_desc *d)
+{
+	unsigned short bisr = __raw_readw(bcsr_virt + BCSR_REG_INTSTAT);
+	struct irq_chip *chip = irq_desc_get_chip(d);
+
+	chained_irq_enter(chip, d);
+	generic_handle_irq(bcsr_csc_base + __ffs(bisr));
+	chained_irq_exit(chip, d);
+}
+
+static void bcsr_irq_mask(struct irq_data *d)
+{
+	unsigned short v = 1 << (d->irq - bcsr_csc_base);
+	__raw_writew(v, bcsr_virt + BCSR_REG_MASKCLR);
+	wmb();
+}
+
+static void bcsr_irq_maskack(struct irq_data *d)
+{
+	unsigned short v = 1 << (d->irq - bcsr_csc_base);
+	__raw_writew(v, bcsr_virt + BCSR_REG_MASKCLR);
+	__raw_writew(v, bcsr_virt + BCSR_REG_INTSTAT);	/* ack */
+	wmb();
+}
+
+static void bcsr_irq_unmask(struct irq_data *d)
+{
+	unsigned short v = 1 << (d->irq - bcsr_csc_base);
+	__raw_writew(v, bcsr_virt + BCSR_REG_MASKSET);
+	wmb();
+}
+
+static struct irq_chip bcsr_irq_type = {
+	.name		= "CPLD",
+	.irq_mask	= bcsr_irq_mask,
+	.irq_mask_ack	= bcsr_irq_maskack,
+	.irq_unmask	= bcsr_irq_unmask,
+};
+
+void __init bcsr_init_irq(int csc_start, int csc_end, int hook_irq)
+{
+	unsigned int irq;
+
+	/* mask & enable & ack all */
+	__raw_writew(0xffff, bcsr_virt + BCSR_REG_MASKCLR);
+	__raw_writew(0xffff, bcsr_virt + BCSR_REG_INTSET);
+	__raw_writew(0xffff, bcsr_virt + BCSR_REG_INTSTAT);
+	wmb();
+
+	bcsr_csc_base = csc_start;
+
+	for (irq = csc_start; irq <= csc_end; irq++)
+		irq_set_chip_and_handler_name(irq, &bcsr_irq_type,
+					      handle_level_irq, "level");
+
+	irq_set_chained_handler(hook_irq, bcsr_csc_handler);
+}
diff --git a/arch/mips/alchemy/devboards/db1000.c b/arch/mips/alchemy/devboards/db1000.c
new file mode 100644
index 000000000..5eff34a86
--- /dev/null
+++ b/arch/mips/alchemy/devboards/db1000.c
@@ -0,0 +1,564 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * DBAu1000/1500/1100 PBAu1100/1500 board support
+ *
+ * Copyright 2000, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/gpio/legacy.h>
+#include <linux/gpio/machine.h>
+#include <linux/gpio/property.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/leds.h>
+#include <linux/mmc/host.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/pm.h>
+#include <linux/spi/spi.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/gpio-au1000.h>
+#include <asm/mach-au1x00/au1000_dma.h>
+#include <asm/mach-au1x00/au1100_mmc.h>
+#include <asm/mach-db1x00/bcsr.h>
+#include <asm/reboot.h>
+#include <prom.h>
+
+#include "db1xxx.h"
+#include "platform.h"
+
+#define F_SWAPPED (bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1000_SWAPBOOT)
+
+const char *get_system_type(void);
+
+int __init db1000_board_setup(void)
+{
+	/* initialize board register space */
+	bcsr_init(DB1000_BCSR_PHYS_ADDR,
+		  DB1000_BCSR_PHYS_ADDR + DB1000_BCSR_HEXLED_OFS);
+
+	switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
+	case BCSR_WHOAMI_DB1000:
+	case BCSR_WHOAMI_DB1500:
+	case BCSR_WHOAMI_DB1100:
+	case BCSR_WHOAMI_PB1500:
+	case BCSR_WHOAMI_PB1500R2:
+	case BCSR_WHOAMI_PB1100:
+		pr_info("AMD Alchemy %s Board\n", get_system_type());
+		return 0;
+	}
+	return -ENODEV;
+}
+
+static int db1500_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
+{
+	if ((slot < 12) || (slot > 13) || pin == 0)
+		return -1;
+	if (slot == 12)
+		return (pin == 1) ? AU1500_PCI_INTA : 0xff;
+	if (slot == 13) {
+		switch (pin) {
+		case 1: return AU1500_PCI_INTA;
+		case 2: return AU1500_PCI_INTB;
+		case 3: return AU1500_PCI_INTC;
+		case 4: return AU1500_PCI_INTD;
+		}
+	}
+	return -1;
+}
+
+static u64 au1xxx_all_dmamask = DMA_BIT_MASK(32);
+
+static struct resource alchemy_pci_host_res[] = {
+	[0] = {
+		.start	= AU1500_PCI_PHYS_ADDR,
+		.end	= AU1500_PCI_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct alchemy_pci_platdata db1500_pci_pd = {
+	.board_map_irq	= db1500_map_pci_irq,
+};
+
+static struct platform_device db1500_pci_host_dev = {
+	.dev.platform_data = &db1500_pci_pd,
+	.name		= "alchemy-pci",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(alchemy_pci_host_res),
+	.resource	= alchemy_pci_host_res,
+};
+
+int __init db1500_pci_setup(void)
+{
+	return platform_device_register(&db1500_pci_host_dev);
+}
+
+static struct resource au1100_lcd_resources[] = {
+	[0] = {
+		.start	= AU1100_LCD_PHYS_ADDR,
+		.end	= AU1100_LCD_PHYS_ADDR + 0x800 - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1100_LCD_INT,
+		.end	= AU1100_LCD_INT,
+		.flags	= IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device au1100_lcd_device = {
+	.name		= "au1100-lcd",
+	.id		= 0,
+	.dev = {
+		.dma_mask		= &au1xxx_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+	},
+	.num_resources	= ARRAY_SIZE(au1100_lcd_resources),
+	.resource	= au1100_lcd_resources,
+};
+
+static struct resource alchemy_ac97c_res[] = {
+	[0] = {
+		.start	= AU1000_AC97_PHYS_ADDR,
+		.end	= AU1000_AC97_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= DMA_ID_AC97C_TX,
+		.end	= DMA_ID_AC97C_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[2] = {
+		.start	= DMA_ID_AC97C_RX,
+		.end	= DMA_ID_AC97C_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device alchemy_ac97c_dev = {
+	.name		= "alchemy-ac97c",
+	.id		= -1,
+	.resource	= alchemy_ac97c_res,
+	.num_resources	= ARRAY_SIZE(alchemy_ac97c_res),
+};
+
+static struct platform_device alchemy_ac97c_dma_dev = {
+	.name		= "alchemy-pcm-dma",
+	.id		= 0,
+};
+
+static struct platform_device db1x00_codec_dev = {
+	.name		= "ac97-codec",
+	.id		= -1,
+};
+
+static struct platform_device db1x00_audio_dev = {
+	.name		= "db1000-audio",
+	.dev = {
+		.dma_mask		= &au1xxx_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+	},
+};
+
+/******************************************************************************/
+
+#ifdef CONFIG_MMC_AU1X
+static irqreturn_t db1100_mmc_cd(int irq, void *ptr)
+{
+	mmc_detect_change(ptr, msecs_to_jiffies(500));
+	return IRQ_HANDLED;
+}
+
+static int db1100_mmc_cd_setup(void *mmc_host, int en)
+{
+	int ret = 0, irq;
+
+	if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100)
+		irq = AU1100_GPIO19_INT;
+	else
+		irq = AU1100_GPIO14_INT;	/* PB1100 SD0 CD# */
+
+	if (en) {
+		irq_set_irq_type(irq, IRQ_TYPE_EDGE_BOTH);
+		ret = request_irq(irq, db1100_mmc_cd, 0,
+				  "sd0_cd", mmc_host);
+	} else
+		free_irq(irq, mmc_host);
+	return ret;
+}
+
+static int db1100_mmc1_cd_setup(void *mmc_host, int en)
+{
+	int ret = 0, irq;
+
+	if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100)
+		irq = AU1100_GPIO20_INT;
+	else
+		irq = AU1100_GPIO15_INT;	/* PB1100 SD1 CD# */
+
+	if (en) {
+		irq_set_irq_type(irq, IRQ_TYPE_EDGE_BOTH);
+		ret = request_irq(irq, db1100_mmc_cd, 0,
+				  "sd1_cd", mmc_host);
+	} else
+		free_irq(irq, mmc_host);
+	return ret;
+}
+
+static int db1100_mmc_card_readonly(void *mmc_host)
+{
+	/* testing suggests that this bit is inverted */
+	return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 0 : 1;
+}
+
+static int db1100_mmc_card_inserted(void *mmc_host)
+{
+	return !alchemy_gpio_get_value(19);
+}
+
+static void db1100_mmc_set_power(void *mmc_host, int state)
+{
+	int bit;
+
+	if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100)
+		bit = BCSR_BOARD_SD0PWR;
+	else
+		bit = BCSR_BOARD_PB1100_SD0PWR;
+
+	if (state) {
+		bcsr_mod(BCSR_BOARD, 0, bit);
+		msleep(400);	/* stabilization time */
+	} else
+		bcsr_mod(BCSR_BOARD, bit, 0);
+}
+
+static void db1100_mmcled_set(struct led_classdev *led, enum led_brightness b)
+{
+	if (b != LED_OFF)
+		bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0);
+	else
+		bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0);
+}
+
+static struct led_classdev db1100_mmc_led = {
+	.brightness_set = db1100_mmcled_set,
+};
+
+static int db1100_mmc1_card_readonly(void *mmc_host)
+{
+	return (bcsr_read(BCSR_BOARD) & BCSR_BOARD_SD1WP) ? 1 : 0;
+}
+
+static int db1100_mmc1_card_inserted(void *mmc_host)
+{
+	return !alchemy_gpio_get_value(20);
+}
+
+static void db1100_mmc1_set_power(void *mmc_host, int state)
+{
+	int bit;
+
+	if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100)
+		bit = BCSR_BOARD_SD1PWR;
+	else
+		bit = BCSR_BOARD_PB1100_SD1PWR;
+
+	if (state) {
+		bcsr_mod(BCSR_BOARD, 0, bit);
+		msleep(400);	/* stabilization time */
+	} else
+		bcsr_mod(BCSR_BOARD, bit, 0);
+}
+
+static void db1100_mmc1led_set(struct led_classdev *led, enum led_brightness b)
+{
+	if (b != LED_OFF)
+		bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED1, 0);
+	else
+		bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED1);
+}
+
+static struct led_classdev db1100_mmc1_led = {
+	.brightness_set = db1100_mmc1led_set,
+};
+
+static struct au1xmmc_platform_data db1100_mmc_platdata[2] = {
+	[0] = {
+		.cd_setup	= db1100_mmc_cd_setup,
+		.set_power	= db1100_mmc_set_power,
+		.card_inserted	= db1100_mmc_card_inserted,
+		.card_readonly	= db1100_mmc_card_readonly,
+		.led		= &db1100_mmc_led,
+	},
+	[1] = {
+		.cd_setup	= db1100_mmc1_cd_setup,
+		.set_power	= db1100_mmc1_set_power,
+		.card_inserted	= db1100_mmc1_card_inserted,
+		.card_readonly	= db1100_mmc1_card_readonly,
+		.led		= &db1100_mmc1_led,
+	},
+};
+
+static struct resource au1100_mmc0_resources[] = {
+	[0] = {
+		.start	= AU1100_SD0_PHYS_ADDR,
+		.end	= AU1100_SD0_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1100_SD_INT,
+		.end	= AU1100_SD_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= DMA_ID_SD0_TX,
+		.end	= DMA_ID_SD0_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= DMA_ID_SD0_RX,
+		.end	= DMA_ID_SD0_RX,
+		.flags	= IORESOURCE_DMA,
+	}
+};
+
+static struct platform_device db1100_mmc0_dev = {
+	.name		= "au1xxx-mmc",
+	.id		= 0,
+	.dev = {
+		.dma_mask		= &au1xxx_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1100_mmc_platdata[0],
+	},
+	.num_resources	= ARRAY_SIZE(au1100_mmc0_resources),
+	.resource	= au1100_mmc0_resources,
+};
+
+static struct resource au1100_mmc1_res[] = {
+	[0] = {
+		.start	= AU1100_SD1_PHYS_ADDR,
+		.end	= AU1100_SD1_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1100_SD_INT,
+		.end	= AU1100_SD_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= DMA_ID_SD1_TX,
+		.end	= DMA_ID_SD1_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= DMA_ID_SD1_RX,
+		.end	= DMA_ID_SD1_RX,
+		.flags	= IORESOURCE_DMA,
+	}
+};
+
+static struct platform_device db1100_mmc1_dev = {
+	.name		= "au1xxx-mmc",
+	.id		= 1,
+	.dev = {
+		.dma_mask		= &au1xxx_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1100_mmc_platdata[1],
+	},
+	.num_resources	= ARRAY_SIZE(au1100_mmc1_res),
+	.resource	= au1100_mmc1_res,
+};
+#endif /* CONFIG_MMC_AU1X */
+
+/******************************************************************************/
+
+static const struct property_entry db1100_ads7846_props[] = {
+	PROPERTY_ENTRY_U16("ti,vref_min", 3300),
+	PROPERTY_ENTRY_GPIO("pendown-gpios", &alchemy_gpio2_node, 21, GPIO_ACTIVE_LOW),
+	{ }
+};
+
+static const struct software_node db1100_ads7846_swnode = {
+	.name		= "ads7846",
+	.properties	= db1100_ads7846_props,
+};
+
+static struct spi_board_info db1100_spi_info[] __initdata = {
+	[0] = {
+		.modalias	 = "ads7846",
+		.max_speed_hz	 = 3250000,
+		.bus_num	 = 0,
+		.chip_select	 = 0,
+		.mode		 = 0,
+		.irq		 = AU1100_GPIO21_INT,
+		.swnode		 = &db1100_ads7846_swnode,
+	},
+};
+
+/*
+ * Alchemy GPIO 2 has its base at 200 so the GPIO lines
+ * 207 thru 210 are GPIOs at offset 7 thru 10 at this chip.
+ */
+static const struct property_entry db1100_spi_dev_properties[] __initconst = {
+	PROPERTY_ENTRY_GPIO("miso-gpios",
+			    &alchemy_gpio2_node, 7, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("mosi-gpios",
+			    &alchemy_gpio2_node, 8, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("sck-gpios",
+			    &alchemy_gpio2_node, 9, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("cs-gpios",
+			    &alchemy_gpio2_node, 10, GPIO_ACTIVE_HIGH),
+	{ }
+};
+
+static const struct platform_device_info db1100_spi_dev_info __initconst = {
+	.name		= "spi_gpio",
+	.id		= 0,
+	.dma_mask	= DMA_BIT_MASK(32),
+	.properties	= db1100_spi_dev_properties,
+};
+
+static struct platform_device *db1x00_devs[] = {
+	&db1x00_codec_dev,
+	&alchemy_ac97c_dma_dev,
+	&alchemy_ac97c_dev,
+	&db1x00_audio_dev,
+};
+
+static struct platform_device *db1100_devs[] = {
+	&au1100_lcd_device,
+#ifdef CONFIG_MMC_AU1X
+	&db1100_mmc0_dev,
+	&db1100_mmc1_dev,
+#endif
+};
+
+int __init db1000_dev_setup(void)
+{
+	int board = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
+	int c0, c1, d0, d1, s0, s1, flashsize = 32,  twosocks = 1;
+	int err;
+	unsigned long pfc;
+	struct clk *c, *p;
+	struct platform_device *spi_dev;
+
+	if (board == BCSR_WHOAMI_DB1500) {
+		c0 = AU1500_GPIO2_INT;
+		c1 = AU1500_GPIO5_INT;
+		d0 = 0;	/* GPIO number, NOT irq! */
+		d1 = 3; /* GPIO number, NOT irq! */
+		s0 = AU1500_GPIO1_INT;
+		s1 = AU1500_GPIO4_INT;
+	} else if (board == BCSR_WHOAMI_DB1100) {
+		c0 = AU1100_GPIO2_INT;
+		c1 = AU1100_GPIO5_INT;
+		d0 = 0; /* GPIO number, NOT irq! */
+		d1 = 3; /* GPIO number, NOT irq! */
+		s0 = AU1100_GPIO1_INT;
+		s1 = AU1100_GPIO4_INT;
+
+		gpio_request(19, "sd0_cd");
+		gpio_request(20, "sd1_cd");
+		gpio_direction_input(19);	/* sd0 cd# */
+		gpio_direction_input(20);	/* sd1 cd# */
+
+		/* spi_gpio on SSI0 pins */
+		pfc = alchemy_rdsys(AU1000_SYS_PINFUNC);
+		pfc |= (1 << 0);	/* SSI0 pins as GPIOs */
+		alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
+
+		spi_register_board_info(db1100_spi_info,
+					ARRAY_SIZE(db1100_spi_info));
+
+		/* link LCD clock to AUXPLL */
+		p = clk_get(NULL, "auxpll_clk");
+		c = clk_get(NULL, "lcd_intclk");
+		if (!IS_ERR(c) && !IS_ERR(p)) {
+			clk_set_parent(c, p);
+			clk_set_rate(c, clk_get_rate(p));
+		}
+		if (!IS_ERR(c))
+			clk_put(c);
+		if (!IS_ERR(p))
+			clk_put(p);
+
+		platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs));
+
+		spi_dev = platform_device_register_full(&db1100_spi_dev_info);
+		err = PTR_ERR_OR_ZERO(spi_dev);
+		if (err)
+			pr_err("failed to register SPI controller: %d\n", err);
+	} else if (board == BCSR_WHOAMI_DB1000) {
+		c0 = AU1000_GPIO2_INT;
+		c1 = AU1000_GPIO5_INT;
+		d0 = 0; /* GPIO number, NOT irq! */
+		d1 = 3; /* GPIO number, NOT irq! */
+		s0 = AU1000_GPIO1_INT;
+		s1 = AU1000_GPIO4_INT;
+	} else if ((board == BCSR_WHOAMI_PB1500) ||
+		   (board == BCSR_WHOAMI_PB1500R2)) {
+		c0 = AU1500_GPIO203_INT;
+		d0 = 1; /* GPIO number, NOT irq! */
+		s0 = AU1500_GPIO202_INT;
+		twosocks = 0;
+		flashsize = 64;
+		/* RTC and daughtercard irqs */
+		irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_LOW);
+		irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
+		/* EPSON S1D13806 0x1b000000
+		 * SRAM 1MB/2MB	  0x1a000000
+		 * DS1693 RTC	  0x0c000000
+		 */
+	} else if (board == BCSR_WHOAMI_PB1100) {
+		c0 = AU1100_GPIO11_INT;
+		d0 = 9; /* GPIO number, NOT irq! */
+		s0 = AU1100_GPIO10_INT;
+		twosocks = 0;
+		flashsize = 64;
+		/* pendown, rtc, daughtercard irqs */
+		irq_set_irq_type(AU1100_GPIO8_INT, IRQ_TYPE_LEVEL_LOW);
+		irq_set_irq_type(AU1100_GPIO12_INT, IRQ_TYPE_LEVEL_LOW);
+		irq_set_irq_type(AU1100_GPIO13_INT, IRQ_TYPE_LEVEL_LOW);
+		/* EPSON S1D13806 0x1b000000
+		 * SRAM 1MB/2MB	  0x1a000000
+		 * DiskOnChip	  0x0d000000
+		 * DS1693 RTC	  0x0c000000
+		 */
+		platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs));
+	} else
+		return 0; /* unknown board, no further dev setup to do */
+
+	irq_set_irq_type(c0, IRQ_TYPE_LEVEL_LOW);
+	irq_set_irq_type(s0, IRQ_TYPE_LEVEL_LOW);
+
+	db1x_register_pcmcia_socket(
+		AU1000_PCMCIA_ATTR_PHYS_ADDR,
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
+		AU1000_PCMCIA_MEM_PHYS_ADDR,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x000400000 - 1,
+		AU1000_PCMCIA_IO_PHYS_ADDR,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x000010000 - 1,
+		c0, d0, /*s0*/0, 0, 0);
+
+	if (twosocks) {
+		irq_set_irq_type(c1, IRQ_TYPE_LEVEL_LOW);
+		irq_set_irq_type(s1, IRQ_TYPE_LEVEL_LOW);
+
+		db1x_register_pcmcia_socket(
+			AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000,
+			AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1,
+			AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004000000,
+			AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004400000 - 1,
+			AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004000000,
+			AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004010000 - 1,
+			c1, d1, /*s1*/0, 0, 1);
+	}
+
+	platform_add_devices(db1x00_devs, ARRAY_SIZE(db1x00_devs));
+	db1x_register_norflash(flashsize << 20, 4 /* 32bit */, F_SWAPPED);
+	return 0;
+}
diff --git a/arch/mips/alchemy/devboards/db1200.c b/arch/mips/alchemy/devboards/db1200.c
new file mode 100644
index 000000000..539b311fc
--- /dev/null
+++ b/arch/mips/alchemy/devboards/db1200.c
@@ -0,0 +1,944 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * DBAu1200/PBAu1200 board platform device registration
+ *
+ * Copyright (C) 2008-2011 Manuel Lauss
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/gpio/legacy.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/leds.h>
+#include <linux/mmc/host.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/platnand.h>
+#include <linux/platform_device.h>
+#include <linux/serial_8250.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
+#include <linux/smc91x.h>
+#include <linux/ata_platform.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1100_mmc.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+#include <asm/mach-au1x00/au1xxx_psc.h>
+#include <asm/mach-au1x00/au1200fb.h>
+#include <asm/mach-au1x00/au1550_spi.h>
+#include <asm/mach-db1x00/bcsr.h>
+
+#include "db1xxx.h"
+#include "platform.h"
+
+#define BCSR_INT_IDE		0x0001
+#define BCSR_INT_ETH		0x0002
+#define BCSR_INT_PC0		0x0004
+#define BCSR_INT_PC0STSCHG	0x0008
+#define BCSR_INT_PC1		0x0010
+#define BCSR_INT_PC1STSCHG	0x0020
+#define BCSR_INT_DC		0x0040
+#define BCSR_INT_FLASHBUSY	0x0080
+#define BCSR_INT_PC0INSERT	0x0100
+#define BCSR_INT_PC0EJECT	0x0200
+#define BCSR_INT_PC1INSERT	0x0400
+#define BCSR_INT_PC1EJECT	0x0800
+#define BCSR_INT_SD0INSERT	0x1000
+#define BCSR_INT_SD0EJECT	0x2000
+#define BCSR_INT_SD1INSERT	0x4000
+#define BCSR_INT_SD1EJECT	0x8000
+
+#define DB1200_IDE_PHYS_ADDR	0x18800000
+#define DB1200_IDE_REG_SHIFT	5
+#define DB1200_IDE_PHYS_LEN	(16 << DB1200_IDE_REG_SHIFT)
+#define DB1200_ETH_PHYS_ADDR	0x19000300
+#define DB1200_NAND_PHYS_ADDR	0x20000000
+
+#define PB1200_IDE_PHYS_ADDR	0x0C800000
+#define PB1200_ETH_PHYS_ADDR	0x0D000300
+#define PB1200_NAND_PHYS_ADDR	0x1C000000
+
+#define DB1200_INT_BEGIN	(AU1000_MAX_INTR + 1)
+#define DB1200_IDE_INT		(DB1200_INT_BEGIN + 0)
+#define DB1200_ETH_INT		(DB1200_INT_BEGIN + 1)
+#define DB1200_PC0_INT		(DB1200_INT_BEGIN + 2)
+#define DB1200_PC0_STSCHG_INT	(DB1200_INT_BEGIN + 3)
+#define DB1200_PC1_INT		(DB1200_INT_BEGIN + 4)
+#define DB1200_PC1_STSCHG_INT	(DB1200_INT_BEGIN + 5)
+#define DB1200_DC_INT		(DB1200_INT_BEGIN + 6)
+#define DB1200_FLASHBUSY_INT	(DB1200_INT_BEGIN + 7)
+#define DB1200_PC0_INSERT_INT	(DB1200_INT_BEGIN + 8)
+#define DB1200_PC0_EJECT_INT	(DB1200_INT_BEGIN + 9)
+#define DB1200_PC1_INSERT_INT	(DB1200_INT_BEGIN + 10)
+#define DB1200_PC1_EJECT_INT	(DB1200_INT_BEGIN + 11)
+#define DB1200_SD0_INSERT_INT	(DB1200_INT_BEGIN + 12)
+#define DB1200_SD0_EJECT_INT	(DB1200_INT_BEGIN + 13)
+#define PB1200_SD1_INSERT_INT	(DB1200_INT_BEGIN + 14)
+#define PB1200_SD1_EJECT_INT	(DB1200_INT_BEGIN + 15)
+#define DB1200_INT_END		(DB1200_INT_BEGIN + 15)
+
+const char *get_system_type(void);
+
+static int __init db1200_detect_board(void)
+{
+	int bid;
+
+	/* try the DB1200 first */
+	bcsr_init(DB1200_BCSR_PHYS_ADDR,
+		  DB1200_BCSR_PHYS_ADDR + DB1200_BCSR_HEXLED_OFS);
+	if (BCSR_WHOAMI_DB1200 == BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
+		unsigned short t = bcsr_read(BCSR_HEXLEDS);
+		bcsr_write(BCSR_HEXLEDS, ~t);
+		if (bcsr_read(BCSR_HEXLEDS) != t) {
+			bcsr_write(BCSR_HEXLEDS, t);
+			return 0;
+		}
+	}
+
+	/* okay, try the PB1200 then */
+	bcsr_init(PB1200_BCSR_PHYS_ADDR,
+		  PB1200_BCSR_PHYS_ADDR + PB1200_BCSR_HEXLED_OFS);
+	bid = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
+	if ((bid == BCSR_WHOAMI_PB1200_DDR1) ||
+	    (bid == BCSR_WHOAMI_PB1200_DDR2)) {
+		unsigned short t = bcsr_read(BCSR_HEXLEDS);
+		bcsr_write(BCSR_HEXLEDS, ~t);
+		if (bcsr_read(BCSR_HEXLEDS) != t) {
+			bcsr_write(BCSR_HEXLEDS, t);
+			return 0;
+		}
+	}
+
+	return 1;	/* it's neither */
+}
+
+int __init db1200_board_setup(void)
+{
+	unsigned short whoami;
+
+	if (db1200_detect_board())
+		return -ENODEV;
+
+	whoami = bcsr_read(BCSR_WHOAMI);
+	switch (BCSR_WHOAMI_BOARD(whoami)) {
+	case BCSR_WHOAMI_PB1200_DDR1:
+	case BCSR_WHOAMI_PB1200_DDR2:
+	case BCSR_WHOAMI_DB1200:
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	printk(KERN_INFO "Alchemy/AMD/RMI %s Board, CPLD Rev %d"
+		"  Board-ID %d	Daughtercard ID %d\n", get_system_type(),
+		(whoami >> 4) & 0xf, (whoami >> 8) & 0xf, whoami & 0xf);
+
+	return 0;
+}
+
+/******************************************************************************/
+
+static u64 au1200_all_dmamask = DMA_BIT_MASK(32);
+
+static struct mtd_partition db1200_spiflash_parts[] = {
+	{
+		.name	= "spi_flash",
+		.offset = 0,
+		.size	= MTDPART_SIZ_FULL,
+	},
+};
+
+static struct flash_platform_data db1200_spiflash_data = {
+	.name		= "s25fl001",
+	.parts		= db1200_spiflash_parts,
+	.nr_parts	= ARRAY_SIZE(db1200_spiflash_parts),
+	.type		= "m25p10",
+};
+
+static struct spi_board_info db1200_spi_devs[] __initdata = {
+	{
+		/* TI TMP121AIDBVR temp sensor */
+		.modalias	= "tmp121",
+		.max_speed_hz	= 2000000,
+		.bus_num	= 0,
+		.chip_select	= 0,
+		.mode		= 0,
+	},
+	{
+		/* Spansion S25FL001D0FMA SPI flash */
+		.modalias	= "m25p80",
+		.max_speed_hz	= 50000000,
+		.bus_num	= 0,
+		.chip_select	= 1,
+		.mode		= 0,
+		.platform_data	= &db1200_spiflash_data,
+	},
+};
+
+static struct i2c_board_info db1200_i2c_devs[] __initdata = {
+	{ I2C_BOARD_INFO("24c04", 0x52),  }, /* AT24C04-10 I2C eeprom */
+	{ I2C_BOARD_INFO("ne1619", 0x2d), }, /* adm1025-compat hwmon */
+	{ I2C_BOARD_INFO("wm8731", 0x1b), }, /* I2S audio codec WM8731 */
+};
+
+/**********************************************************************/
+
+static void au1200_nand_cmd_ctrl(struct nand_chip *this, int cmd,
+				 unsigned int ctrl)
+{
+	unsigned long ioaddr = (unsigned long)this->legacy.IO_ADDR_W;
+
+	ioaddr &= 0xffffff00;
+
+	if (ctrl & NAND_CLE) {
+		ioaddr += MEM_STNAND_CMD;
+	} else if (ctrl & NAND_ALE) {
+		ioaddr += MEM_STNAND_ADDR;
+	} else {
+		/* assume we want to r/w real data  by default */
+		ioaddr += MEM_STNAND_DATA;
+	}
+	this->legacy.IO_ADDR_R = this->legacy.IO_ADDR_W = (void __iomem *)ioaddr;
+	if (cmd != NAND_CMD_NONE) {
+		__raw_writeb(cmd, this->legacy.IO_ADDR_W);
+		wmb();
+	}
+}
+
+static int au1200_nand_device_ready(struct nand_chip *this)
+{
+	return alchemy_rdsmem(AU1000_MEM_STSTAT) & 1;
+}
+
+static struct mtd_partition db1200_nand_parts[] = {
+	{
+		.name	= "NAND FS 0",
+		.offset = 0,
+		.size	= 8 * 1024 * 1024,
+	},
+	{
+		.name	= "NAND FS 1",
+		.offset = MTDPART_OFS_APPEND,
+		.size	= MTDPART_SIZ_FULL
+	},
+};
+
+struct platform_nand_data db1200_nand_platdata = {
+	.chip = {
+		.nr_chips	= 1,
+		.chip_offset	= 0,
+		.nr_partitions	= ARRAY_SIZE(db1200_nand_parts),
+		.partitions	= db1200_nand_parts,
+		.chip_delay	= 20,
+	},
+	.ctrl = {
+		.dev_ready	= au1200_nand_device_ready,
+		.cmd_ctrl	= au1200_nand_cmd_ctrl,
+	},
+};
+
+static struct resource db1200_nand_res[] = {
+	[0] = {
+		.start	= DB1200_NAND_PHYS_ADDR,
+		.end	= DB1200_NAND_PHYS_ADDR + 0xff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device db1200_nand_dev = {
+	.name		= "gen_nand",
+	.num_resources	= ARRAY_SIZE(db1200_nand_res),
+	.resource	= db1200_nand_res,
+	.id		= -1,
+	.dev		= {
+		.platform_data = &db1200_nand_platdata,
+	}
+};
+
+/**********************************************************************/
+
+static struct smc91x_platdata db1200_eth_data = {
+	.flags	= SMC91X_NOWAIT | SMC91X_USE_16BIT,
+	.leda	= RPC_LED_100_10,
+	.ledb	= RPC_LED_TX_RX,
+};
+
+static struct resource db1200_eth_res[] = {
+	[0] = {
+		.start	= DB1200_ETH_PHYS_ADDR,
+		.end	= DB1200_ETH_PHYS_ADDR + 0xf,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= DB1200_ETH_INT,
+		.end	= DB1200_ETH_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device db1200_eth_dev = {
+	.dev	= {
+		.platform_data	= &db1200_eth_data,
+	},
+	.name		= "smc91x",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(db1200_eth_res),
+	.resource	= db1200_eth_res,
+};
+
+/**********************************************************************/
+
+static struct pata_platform_info db1200_ide_info = {
+	.ioport_shift	= DB1200_IDE_REG_SHIFT,
+};
+
+#define IDE_ALT_START	(14 << DB1200_IDE_REG_SHIFT)
+static struct resource db1200_ide_res[] = {
+	[0] = {
+		.start	= DB1200_IDE_PHYS_ADDR,
+		.end	= DB1200_IDE_PHYS_ADDR + IDE_ALT_START - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= DB1200_IDE_PHYS_ADDR + IDE_ALT_START,
+		.end	= DB1200_IDE_PHYS_ADDR + DB1200_IDE_PHYS_LEN - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[2] = {
+		.start	= DB1200_IDE_INT,
+		.end	= DB1200_IDE_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device db1200_ide_dev = {
+	.name		= "pata_platform",
+	.id		= 0,
+	.dev = {
+		.dma_mask		= &au1200_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1200_ide_info,
+	},
+	.num_resources	= ARRAY_SIZE(db1200_ide_res),
+	.resource	= db1200_ide_res,
+};
+
+/**********************************************************************/
+
+#ifdef CONFIG_MMC_AU1X
+/* SD carddetects:  they're supposed to be edge-triggered, but ack
+ * doesn't seem to work (CPLD Rev 2).  Instead, the screaming one
+ * is disabled and its counterpart enabled.  The 200ms timeout is
+ * because the carddetect usually triggers twice, after debounce.
+ */
+static irqreturn_t db1200_mmc_cd(int irq, void *ptr)
+{
+	disable_irq_nosync(irq);
+	return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t db1200_mmc_cdfn(int irq, void *ptr)
+{
+	mmc_detect_change(ptr, msecs_to_jiffies(200));
+
+	msleep(100);	/* debounce */
+	if (irq == DB1200_SD0_INSERT_INT)
+		enable_irq(DB1200_SD0_EJECT_INT);
+	else
+		enable_irq(DB1200_SD0_INSERT_INT);
+
+	return IRQ_HANDLED;
+}
+
+static int db1200_mmc_cd_setup(void *mmc_host, int en)
+{
+	int ret;
+
+	if (en) {
+		ret = request_threaded_irq(DB1200_SD0_INSERT_INT, db1200_mmc_cd,
+				db1200_mmc_cdfn, 0, "sd_insert", mmc_host);
+		if (ret)
+			goto out;
+
+		ret = request_threaded_irq(DB1200_SD0_EJECT_INT, db1200_mmc_cd,
+				db1200_mmc_cdfn, 0, "sd_eject", mmc_host);
+		if (ret) {
+			free_irq(DB1200_SD0_INSERT_INT, mmc_host);
+			goto out;
+		}
+
+		if (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD0INSERT)
+			enable_irq(DB1200_SD0_EJECT_INT);
+		else
+			enable_irq(DB1200_SD0_INSERT_INT);
+
+	} else {
+		free_irq(DB1200_SD0_INSERT_INT, mmc_host);
+		free_irq(DB1200_SD0_EJECT_INT, mmc_host);
+	}
+	ret = 0;
+out:
+	return ret;
+}
+
+static void db1200_mmc_set_power(void *mmc_host, int state)
+{
+	if (state) {
+		bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD0PWR);
+		msleep(400);	/* stabilization time */
+	} else
+		bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD0PWR, 0);
+}
+
+static int db1200_mmc_card_readonly(void *mmc_host)
+{
+	return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 1 : 0;
+}
+
+static int db1200_mmc_card_inserted(void *mmc_host)
+{
+	return (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD0INSERT) ? 1 : 0;
+}
+
+static void db1200_mmcled_set(struct led_classdev *led,
+			      enum led_brightness brightness)
+{
+	if (brightness != LED_OFF)
+		bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0);
+	else
+		bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0);
+}
+
+static struct led_classdev db1200_mmc_led = {
+	.brightness_set = db1200_mmcled_set,
+};
+
+/* -- */
+
+static irqreturn_t pb1200_mmc1_cd(int irq, void *ptr)
+{
+	disable_irq_nosync(irq);
+	return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t pb1200_mmc1_cdfn(int irq, void *ptr)
+{
+	mmc_detect_change(ptr, msecs_to_jiffies(200));
+
+	msleep(100);	/* debounce */
+	if (irq == PB1200_SD1_INSERT_INT)
+		enable_irq(PB1200_SD1_EJECT_INT);
+	else
+		enable_irq(PB1200_SD1_INSERT_INT);
+
+	return IRQ_HANDLED;
+}
+
+static int pb1200_mmc1_cd_setup(void *mmc_host, int en)
+{
+	int ret;
+
+	if (en) {
+		ret = request_threaded_irq(PB1200_SD1_INSERT_INT, pb1200_mmc1_cd,
+				pb1200_mmc1_cdfn, 0, "sd1_insert", mmc_host);
+		if (ret)
+			goto out;
+
+		ret = request_threaded_irq(PB1200_SD1_EJECT_INT, pb1200_mmc1_cd,
+				pb1200_mmc1_cdfn, 0, "sd1_eject", mmc_host);
+		if (ret) {
+			free_irq(PB1200_SD1_INSERT_INT, mmc_host);
+			goto out;
+		}
+
+		if (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD1INSERT)
+			enable_irq(PB1200_SD1_EJECT_INT);
+		else
+			enable_irq(PB1200_SD1_INSERT_INT);
+
+	} else {
+		free_irq(PB1200_SD1_INSERT_INT, mmc_host);
+		free_irq(PB1200_SD1_EJECT_INT, mmc_host);
+	}
+	ret = 0;
+out:
+	return ret;
+}
+
+static void pb1200_mmc1led_set(struct led_classdev *led,
+			enum led_brightness brightness)
+{
+	if (brightness != LED_OFF)
+			bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED1, 0);
+	else
+			bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED1);
+}
+
+static struct led_classdev pb1200_mmc1_led = {
+	.brightness_set = pb1200_mmc1led_set,
+};
+
+static void pb1200_mmc1_set_power(void *mmc_host, int state)
+{
+	if (state) {
+		bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD1PWR);
+		msleep(400);	/* stabilization time */
+	} else
+		bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD1PWR, 0);
+}
+
+static int pb1200_mmc1_card_readonly(void *mmc_host)
+{
+	return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD1WP) ? 1 : 0;
+}
+
+static int pb1200_mmc1_card_inserted(void *mmc_host)
+{
+	return (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD1INSERT) ? 1 : 0;
+}
+
+
+static struct au1xmmc_platform_data db1200_mmc_platdata[2] = {
+	[0] = {
+		.cd_setup	= db1200_mmc_cd_setup,
+		.set_power	= db1200_mmc_set_power,
+		.card_inserted	= db1200_mmc_card_inserted,
+		.card_readonly	= db1200_mmc_card_readonly,
+		.led		= &db1200_mmc_led,
+	},
+	[1] = {
+		.cd_setup	= pb1200_mmc1_cd_setup,
+		.set_power	= pb1200_mmc1_set_power,
+		.card_inserted	= pb1200_mmc1_card_inserted,
+		.card_readonly	= pb1200_mmc1_card_readonly,
+		.led		= &pb1200_mmc1_led,
+	},
+};
+
+static struct resource au1200_mmc0_resources[] = {
+	[0] = {
+		.start	= AU1100_SD0_PHYS_ADDR,
+		.end	= AU1100_SD0_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1200_SD_INT,
+		.end	= AU1200_SD_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1200_DSCR_CMD0_SDMS_TX0,
+		.end	= AU1200_DSCR_CMD0_SDMS_TX0,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1200_DSCR_CMD0_SDMS_RX0,
+		.end	= AU1200_DSCR_CMD0_SDMS_RX0,
+		.flags	= IORESOURCE_DMA,
+	}
+};
+
+static struct platform_device db1200_mmc0_dev = {
+	.name		= "au1xxx-mmc",
+	.id		= 0,
+	.dev = {
+		.dma_mask		= &au1200_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1200_mmc_platdata[0],
+	},
+	.num_resources	= ARRAY_SIZE(au1200_mmc0_resources),
+	.resource	= au1200_mmc0_resources,
+};
+
+static struct resource au1200_mmc1_res[] = {
+	[0] = {
+		.start	= AU1100_SD1_PHYS_ADDR,
+		.end	= AU1100_SD1_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1200_SD_INT,
+		.end	= AU1200_SD_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1200_DSCR_CMD0_SDMS_TX1,
+		.end	= AU1200_DSCR_CMD0_SDMS_TX1,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1200_DSCR_CMD0_SDMS_RX1,
+		.end	= AU1200_DSCR_CMD0_SDMS_RX1,
+		.flags	= IORESOURCE_DMA,
+	}
+};
+
+static struct platform_device pb1200_mmc1_dev = {
+	.name		= "au1xxx-mmc",
+	.id		= 1,
+	.dev = {
+		.dma_mask		= &au1200_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1200_mmc_platdata[1],
+	},
+	.num_resources	= ARRAY_SIZE(au1200_mmc1_res),
+	.resource	= au1200_mmc1_res,
+};
+#endif /* CONFIG_MMC_AU1X */
+
+/**********************************************************************/
+
+static int db1200fb_panel_index(void)
+{
+	return (bcsr_read(BCSR_SWITCHES) >> 8) & 0x0f;
+}
+
+static int db1200fb_panel_init(void)
+{
+	/* Apply power */
+	bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
+				BCSR_BOARD_LCDBL);
+	return 0;
+}
+
+static int db1200fb_panel_shutdown(void)
+{
+	/* Remove power */
+	bcsr_mod(BCSR_BOARD, BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
+			     BCSR_BOARD_LCDBL, 0);
+	return 0;
+}
+
+static struct au1200fb_platdata db1200fb_pd = {
+	.panel_index	= db1200fb_panel_index,
+	.panel_init	= db1200fb_panel_init,
+	.panel_shutdown = db1200fb_panel_shutdown,
+};
+
+static struct resource au1200_lcd_res[] = {
+	[0] = {
+		.start	= AU1200_LCD_PHYS_ADDR,
+		.end	= AU1200_LCD_PHYS_ADDR + 0x800 - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1200_LCD_INT,
+		.end	= AU1200_LCD_INT,
+		.flags	= IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device au1200_lcd_dev = {
+	.name		= "au1200-lcd",
+	.id		= 0,
+	.dev = {
+		.dma_mask		= &au1200_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1200fb_pd,
+	},
+	.num_resources	= ARRAY_SIZE(au1200_lcd_res),
+	.resource	= au1200_lcd_res,
+};
+
+/**********************************************************************/
+
+static struct resource au1200_psc0_res[] = {
+	[0] = {
+		.start	= AU1550_PSC0_PHYS_ADDR,
+		.end	= AU1550_PSC0_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1200_PSC0_INT,
+		.end	= AU1200_PSC0_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1200_DSCR_CMD0_PSC0_TX,
+		.end	= AU1200_DSCR_CMD0_PSC0_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1200_DSCR_CMD0_PSC0_RX,
+		.end	= AU1200_DSCR_CMD0_PSC0_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1200_i2c_dev = {
+	.name		= "au1xpsc_smbus",
+	.id		= 0,	/* bus number */
+	.num_resources	= ARRAY_SIZE(au1200_psc0_res),
+	.resource	= au1200_psc0_res,
+};
+
+static void db1200_spi_cs_en(struct au1550_spi_info *spi, int cs, int pol)
+{
+	if (cs)
+		bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_SPISEL);
+	else
+		bcsr_mod(BCSR_RESETS, BCSR_RESETS_SPISEL, 0);
+}
+
+static struct au1550_spi_info db1200_spi_platdata = {
+	.mainclk_hz	= 50000000,	/* PSC0 clock */
+	.num_chipselect = 2,
+	.activate_cs	= db1200_spi_cs_en,
+};
+
+static struct platform_device db1200_spi_dev = {
+	.dev	= {
+		.dma_mask		= &au1200_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1200_spi_platdata,
+	},
+	.name		= "au1550-spi",
+	.id		= 0,	/* bus number */
+	.num_resources	= ARRAY_SIZE(au1200_psc0_res),
+	.resource	= au1200_psc0_res,
+};
+
+static struct resource au1200_psc1_res[] = {
+	[0] = {
+		.start	= AU1550_PSC1_PHYS_ADDR,
+		.end	= AU1550_PSC1_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1200_PSC1_INT,
+		.end	= AU1200_PSC1_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1200_DSCR_CMD0_PSC1_TX,
+		.end	= AU1200_DSCR_CMD0_PSC1_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1200_DSCR_CMD0_PSC1_RX,
+		.end	= AU1200_DSCR_CMD0_PSC1_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+/* AC97 or I2S device */
+static struct platform_device db1200_audio_dev = {
+	/* name assigned later based on switch setting */
+	.id		= 1,	/* PSC ID */
+	.num_resources	= ARRAY_SIZE(au1200_psc1_res),
+	.resource	= au1200_psc1_res,
+};
+
+/* DB1200 ASoC card device */
+static struct platform_device db1200_sound_dev = {
+	/* name assigned later based on switch setting */
+	.id		= 1,	/* PSC ID */
+	.dev = {
+		.dma_mask		= &au1200_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+	},
+};
+
+static struct platform_device db1200_stac_dev = {
+	.name		= "ac97-codec",
+	.id		= 1,	/* on PSC1 */
+};
+
+static struct platform_device db1200_audiodma_dev = {
+	.name		= "au1xpsc-pcm",
+	.id		= 1,	/* PSC ID */
+};
+
+static struct platform_device *db1200_devs[] __initdata = {
+	NULL,		/* PSC0, selected by S6.8 */
+	&db1200_ide_dev,
+#ifdef CONFIG_MMC_AU1X
+	&db1200_mmc0_dev,
+#endif
+	&au1200_lcd_dev,
+	&db1200_eth_dev,
+	&db1200_nand_dev,
+	&db1200_audiodma_dev,
+	&db1200_audio_dev,
+	&db1200_stac_dev,
+	&db1200_sound_dev,
+};
+
+static struct platform_device *pb1200_devs[] __initdata = {
+#ifdef CONFIG_MMC_AU1X
+	&pb1200_mmc1_dev,
+#endif
+};
+
+/* Some peripheral base addresses differ on the PB1200 */
+static int __init pb1200_res_fixup(void)
+{
+	/* CPLD Revs earlier than 4 cause problems */
+	if (BCSR_WHOAMI_CPLD(bcsr_read(BCSR_WHOAMI)) <= 3) {
+		printk(KERN_ERR "WARNING!!!\n");
+		printk(KERN_ERR "WARNING!!!\n");
+		printk(KERN_ERR "PB1200 must be at CPLD rev 4. Please have\n");
+		printk(KERN_ERR "the board updated to latest revisions.\n");
+		printk(KERN_ERR "This software will not work reliably\n");
+		printk(KERN_ERR "on anything older than CPLD rev 4.!\n");
+		printk(KERN_ERR "WARNING!!!\n");
+		printk(KERN_ERR "WARNING!!!\n");
+		return 1;
+	}
+
+	db1200_nand_res[0].start = PB1200_NAND_PHYS_ADDR;
+	db1200_nand_res[0].end	 = PB1200_NAND_PHYS_ADDR + 0xff;
+	db1200_ide_res[0].start = PB1200_IDE_PHYS_ADDR;
+	db1200_ide_res[0].end	= PB1200_IDE_PHYS_ADDR + DB1200_IDE_PHYS_LEN - 1;
+	db1200_eth_res[0].start = PB1200_ETH_PHYS_ADDR;
+	db1200_eth_res[0].end	= PB1200_ETH_PHYS_ADDR + 0xff;
+	return 0;
+}
+
+int __init db1200_dev_setup(void)
+{
+	unsigned long pfc;
+	unsigned short sw;
+	int swapped, bid;
+	struct clk *c;
+
+	bid = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
+	if ((bid == BCSR_WHOAMI_PB1200_DDR1) ||
+	    (bid == BCSR_WHOAMI_PB1200_DDR2)) {
+		if (pb1200_res_fixup())
+			return -ENODEV;
+	}
+
+	/* GPIO7 is low-level triggered CPLD cascade */
+	irq_set_irq_type(AU1200_GPIO7_INT, IRQ_TYPE_LEVEL_LOW);
+	bcsr_init_irq(DB1200_INT_BEGIN, DB1200_INT_END, AU1200_GPIO7_INT);
+
+	/* SMBus/SPI on PSC0, Audio on PSC1 */
+	pfc = alchemy_rdsys(AU1000_SYS_PINFUNC);
+	pfc &= ~(SYS_PINFUNC_P0A | SYS_PINFUNC_P0B);
+	pfc &= ~(SYS_PINFUNC_P1A | SYS_PINFUNC_P1B | SYS_PINFUNC_FS3);
+	pfc |= SYS_PINFUNC_P1C; /* SPI is configured later */
+	alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
+
+	/* get 50MHz for I2C driver on PSC0 */
+	c = clk_get(NULL, "psc0_intclk");
+	if (!IS_ERR(c)) {
+		pfc = clk_round_rate(c, 50000000);
+		if ((pfc < 1) || (abs(50000000 - pfc) > 2500000))
+			pr_warn("DB1200: can't get I2C close to 50MHz\n");
+		else
+			clk_set_rate(c, pfc);
+		clk_prepare_enable(c);
+		clk_put(c);
+	}
+
+	/* insert/eject pairs: one of both is always screaming.	 To avoid
+	 * issues they must not be automatically enabled when initially
+	 * requested.
+	 */
+	irq_set_status_flags(DB1200_SD0_INSERT_INT, IRQ_NOAUTOEN);
+	irq_set_status_flags(DB1200_SD0_EJECT_INT, IRQ_NOAUTOEN);
+	irq_set_status_flags(DB1200_PC0_INSERT_INT, IRQ_NOAUTOEN);
+	irq_set_status_flags(DB1200_PC0_EJECT_INT, IRQ_NOAUTOEN);
+	irq_set_status_flags(DB1200_PC1_INSERT_INT, IRQ_NOAUTOEN);
+	irq_set_status_flags(DB1200_PC1_EJECT_INT, IRQ_NOAUTOEN);
+
+	i2c_register_board_info(0, db1200_i2c_devs,
+				ARRAY_SIZE(db1200_i2c_devs));
+	spi_register_board_info(db1200_spi_devs,
+				ARRAY_SIZE(db1200_spi_devs));
+
+	/* SWITCHES:	S6.8 I2C/SPI selector  (OFF=I2C	 ON=SPI)
+	 *		S6.7 AC97/I2S selector (OFF=AC97 ON=I2S)
+	 *		or S12 on the PB1200.
+	 */
+
+	/* NOTE: GPIO215 controls OTG VBUS supply.  In SPI mode however
+	 * this pin is claimed by PSC0 (unused though, but pinmux doesn't
+	 * allow to free it without crippling the SPI interface).
+	 * As a result, in SPI mode, OTG simply won't work (PSC0 uses
+	 * it as an input pin which is pulled high on the boards).
+	 */
+	pfc = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PINFUNC_P0A;
+
+	/* switch off OTG VBUS supply */
+	gpio_request(215, "otg-vbus");
+	gpio_direction_output(215, 1);
+
+	printk(KERN_INFO "%s device configuration:\n", get_system_type());
+
+	sw = bcsr_read(BCSR_SWITCHES);
+	if (sw & BCSR_SWITCHES_DIP_8) {
+		db1200_devs[0] = &db1200_i2c_dev;
+		bcsr_mod(BCSR_RESETS, BCSR_RESETS_PSC0MUX, 0);
+
+		pfc |= (2 << 17);	/* GPIO2 block owns GPIO215 */
+
+		printk(KERN_INFO " S6.8 OFF: PSC0 mode I2C\n");
+		printk(KERN_INFO "   OTG port VBUS supply available!\n");
+	} else {
+		db1200_devs[0] = &db1200_spi_dev;
+		bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_PSC0MUX);
+
+		pfc |= (1 << 17);	/* PSC0 owns GPIO215 */
+
+		printk(KERN_INFO " S6.8 ON : PSC0 mode SPI\n");
+		printk(KERN_INFO "   OTG port VBUS supply disabled\n");
+	}
+	alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
+
+	/* Audio: DIP7 selects I2S(0)/AC97(1), but need I2C for I2S!
+	 * so: DIP7=1 || DIP8=0 => AC97, DIP7=0 && DIP8=1 => I2S
+	 */
+	sw &= BCSR_SWITCHES_DIP_8 | BCSR_SWITCHES_DIP_7;
+	if (sw == BCSR_SWITCHES_DIP_8) {
+		bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_PSC1MUX);
+		db1200_audio_dev.name = "au1xpsc_i2s";
+		db1200_sound_dev.name = "db1200-i2s";
+		printk(KERN_INFO " S6.7 ON : PSC1 mode I2S\n");
+	} else {
+		bcsr_mod(BCSR_RESETS, BCSR_RESETS_PSC1MUX, 0);
+		db1200_audio_dev.name = "au1xpsc_ac97";
+		db1200_sound_dev.name = "db1200-ac97";
+		printk(KERN_INFO " S6.7 OFF: PSC1 mode AC97\n");
+	}
+
+	/* Audio PSC clock is supplied externally. (FIXME: platdata!!) */
+	__raw_writel(PSC_SEL_CLK_SERCLK,
+	    (void __iomem *)KSEG1ADDR(AU1550_PSC1_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+
+	db1x_register_pcmcia_socket(
+		AU1000_PCMCIA_ATTR_PHYS_ADDR,
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
+		AU1000_PCMCIA_MEM_PHYS_ADDR,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x000400000 - 1,
+		AU1000_PCMCIA_IO_PHYS_ADDR,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x000010000 - 1,
+		DB1200_PC0_INT, DB1200_PC0_INSERT_INT,
+		/*DB1200_PC0_STSCHG_INT*/0, DB1200_PC0_EJECT_INT, 0);
+
+	db1x_register_pcmcia_socket(
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000,
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004000000,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004400000 - 1,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004000000,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004010000 - 1,
+		DB1200_PC1_INT, DB1200_PC1_INSERT_INT,
+		/*DB1200_PC1_STSCHG_INT*/0, DB1200_PC1_EJECT_INT, 1);
+
+	swapped = bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1200_SWAPBOOT;
+	db1x_register_norflash(64 << 20, 2, swapped);
+
+	platform_add_devices(db1200_devs, ARRAY_SIZE(db1200_devs));
+
+	/* PB1200 is a DB1200 with a 2nd MMC and Camera connector */
+	if ((bid == BCSR_WHOAMI_PB1200_DDR1) ||
+	    (bid == BCSR_WHOAMI_PB1200_DDR2))
+		platform_add_devices(pb1200_devs, ARRAY_SIZE(pb1200_devs));
+
+	return 0;
+}
diff --git a/arch/mips/alchemy/devboards/db1300.c b/arch/mips/alchemy/devboards/db1300.c
new file mode 100644
index 000000000..a7b8b7e82
--- /dev/null
+++ b/arch/mips/alchemy/devboards/db1300.c
@@ -0,0 +1,956 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * DBAu1300 init and platform device setup.
+ *
+ * (c) 2009 Manuel Lauss <manuel.lauss@googlemail.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/gpio/machine.h>
+#include <linux/gpio/property.h>
+#include <linux/init.h>
+#include <linux/input-event-codes.h>
+#include <linux/i2c.h>
+#include <linux/io.h>
+#include <linux/leds.h>
+#include <linux/interrupt.h>
+#include <linux/ata_platform.h>
+#include <linux/mmc/host.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/platnand.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/smsc911x.h>
+#include <linux/wm97xx.h>
+
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/gpio-au1300.h>
+#include <asm/mach-au1x00/au1100_mmc.h>
+#include <asm/mach-au1x00/au1200fb.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+#include <asm/mach-au1x00/au1xxx_psc.h>
+#include <asm/mach-db1x00/bcsr.h>
+#include <asm/mach-au1x00/prom.h>
+
+#include "db1xxx.h"
+#include "platform.h"
+
+/* FPGA (external mux) interrupt sources */
+#define DB1300_FIRST_INT	(ALCHEMY_GPIC_INT_LAST + 1)
+#define DB1300_IDE_INT		(DB1300_FIRST_INT + 0)
+#define DB1300_ETH_INT		(DB1300_FIRST_INT + 1)
+#define DB1300_CF_INT		(DB1300_FIRST_INT + 2)
+#define DB1300_VIDEO_INT	(DB1300_FIRST_INT + 4)
+#define DB1300_HDMI_INT		(DB1300_FIRST_INT + 5)
+#define DB1300_DC_INT		(DB1300_FIRST_INT + 6)
+#define DB1300_FLASH_INT	(DB1300_FIRST_INT + 7)
+#define DB1300_CF_INSERT_INT	(DB1300_FIRST_INT + 8)
+#define DB1300_CF_EJECT_INT	(DB1300_FIRST_INT + 9)
+#define DB1300_AC97_INT		(DB1300_FIRST_INT + 10)
+#define DB1300_AC97_PEN_INT	(DB1300_FIRST_INT + 11)
+#define DB1300_SD1_INSERT_INT	(DB1300_FIRST_INT + 12)
+#define DB1300_SD1_EJECT_INT	(DB1300_FIRST_INT + 13)
+#define DB1300_OTG_VBUS_OC_INT	(DB1300_FIRST_INT + 14)
+#define DB1300_HOST_VBUS_OC_INT (DB1300_FIRST_INT + 15)
+#define DB1300_LAST_INT		(DB1300_FIRST_INT + 15)
+
+/* SMSC9210 CS */
+#define DB1300_ETH_PHYS_ADDR	0x19000000
+#define DB1300_ETH_PHYS_END	0x197fffff
+
+/* ATA CS */
+#define DB1300_IDE_PHYS_ADDR	0x18800000
+#define DB1300_IDE_REG_SHIFT	5
+#define DB1300_IDE_PHYS_LEN	(16 << DB1300_IDE_REG_SHIFT)
+
+/* NAND CS */
+#define DB1300_NAND_PHYS_ADDR	0x20000000
+#define DB1300_NAND_PHYS_END	0x20000fff
+
+
+static struct i2c_board_info db1300_i2c_devs[] __initdata = {
+	{ I2C_BOARD_INFO("wm8731", 0x1b), },	/* I2S audio codec */
+	{ I2C_BOARD_INFO("ne1619", 0x2d), },	/* adm1025-compat hwmon */
+};
+
+/* multifunction pins to assign to GPIO controller */
+static int db1300_gpio_pins[] __initdata = {
+	AU1300_PIN_LCDPWM0, AU1300_PIN_PSC2SYNC1, AU1300_PIN_WAKE1,
+	AU1300_PIN_WAKE2, AU1300_PIN_WAKE3, AU1300_PIN_FG3AUX,
+	AU1300_PIN_EXTCLK1,
+	-1,	/* terminator */
+};
+
+/* multifunction pins to assign to device functions */
+static int db1300_dev_pins[] __initdata = {
+	/* wake-from-str pins 0-3 */
+	AU1300_PIN_WAKE0,
+	/* external clock sources for PSC0 */
+	AU1300_PIN_EXTCLK0,
+	/* 8bit MMC interface on SD0: 6-9 */
+	AU1300_PIN_SD0DAT4, AU1300_PIN_SD0DAT5, AU1300_PIN_SD0DAT6,
+	AU1300_PIN_SD0DAT7,
+	/* UART1 pins: 11-18 */
+	AU1300_PIN_U1RI, AU1300_PIN_U1DCD, AU1300_PIN_U1DSR,
+	AU1300_PIN_U1CTS, AU1300_PIN_U1RTS, AU1300_PIN_U1DTR,
+	AU1300_PIN_U1RX, AU1300_PIN_U1TX,
+	/* UART0 pins: 19-24 */
+	AU1300_PIN_U0RI, AU1300_PIN_U0DCD, AU1300_PIN_U0DSR,
+	AU1300_PIN_U0CTS, AU1300_PIN_U0RTS, AU1300_PIN_U0DTR,
+	/* UART2: 25-26 */
+	AU1300_PIN_U2RX, AU1300_PIN_U2TX,
+	/* UART3: 27-28 */
+	AU1300_PIN_U3RX, AU1300_PIN_U3TX,
+	/* LCD controller PWMs, ext pixclock: 30-31 */
+	AU1300_PIN_LCDPWM1, AU1300_PIN_LCDCLKIN,
+	/* SD1 interface: 32-37 */
+	AU1300_PIN_SD1DAT0, AU1300_PIN_SD1DAT1, AU1300_PIN_SD1DAT2,
+	AU1300_PIN_SD1DAT3, AU1300_PIN_SD1CMD, AU1300_PIN_SD1CLK,
+	/* SD2 interface: 38-43 */
+	AU1300_PIN_SD2DAT0, AU1300_PIN_SD2DAT1, AU1300_PIN_SD2DAT2,
+	AU1300_PIN_SD2DAT3, AU1300_PIN_SD2CMD, AU1300_PIN_SD2CLK,
+	/* PSC0/1 clocks: 44-45 */
+	AU1300_PIN_PSC0CLK, AU1300_PIN_PSC1CLK,
+	/* PSCs: 46-49/50-53/54-57/58-61 */
+	AU1300_PIN_PSC0SYNC0, AU1300_PIN_PSC0SYNC1, AU1300_PIN_PSC0D0,
+	AU1300_PIN_PSC0D1,
+	AU1300_PIN_PSC1SYNC0, AU1300_PIN_PSC1SYNC1, AU1300_PIN_PSC1D0,
+	AU1300_PIN_PSC1D1,
+	AU1300_PIN_PSC2SYNC0,			    AU1300_PIN_PSC2D0,
+	AU1300_PIN_PSC2D1,
+	AU1300_PIN_PSC3SYNC0, AU1300_PIN_PSC3SYNC1, AU1300_PIN_PSC3D0,
+	AU1300_PIN_PSC3D1,
+	/* PCMCIA interface: 62-70 */
+	AU1300_PIN_PCE2, AU1300_PIN_PCE1, AU1300_PIN_PIOS16,
+	AU1300_PIN_PIOR, AU1300_PIN_PWE, AU1300_PIN_PWAIT,
+	AU1300_PIN_PREG, AU1300_PIN_POE, AU1300_PIN_PIOW,
+	/* camera interface H/V sync inputs: 71-72 */
+	AU1300_PIN_CIMLS, AU1300_PIN_CIMFS,
+	/* PSC2/3 clocks: 73-74 */
+	AU1300_PIN_PSC2CLK, AU1300_PIN_PSC3CLK,
+	-1,	/* terminator */
+};
+
+static void __init db1300_gpio_config(void)
+{
+	int *i;
+
+	i = &db1300_dev_pins[0];
+	while (*i != -1)
+		au1300_pinfunc_to_dev(*i++);
+
+	i = &db1300_gpio_pins[0];
+	while (*i != -1)
+		au1300_gpio_direction_input(*i++);/* implies pin_to_gpio */
+
+	au1300_set_dbdma_gpio(1, AU1300_PIN_FG3AUX);
+}
+
+/**********************************************************************/
+
+static u64 au1300_all_dmamask = DMA_BIT_MASK(32);
+
+static void au1300_nand_cmd_ctrl(struct nand_chip *this, int cmd,
+				 unsigned int ctrl)
+{
+	unsigned long ioaddr = (unsigned long)this->legacy.IO_ADDR_W;
+
+	ioaddr &= 0xffffff00;
+
+	if (ctrl & NAND_CLE) {
+		ioaddr += MEM_STNAND_CMD;
+	} else if (ctrl & NAND_ALE) {
+		ioaddr += MEM_STNAND_ADDR;
+	} else {
+		/* assume we want to r/w real data  by default */
+		ioaddr += MEM_STNAND_DATA;
+	}
+	this->legacy.IO_ADDR_R = this->legacy.IO_ADDR_W = (void __iomem *)ioaddr;
+	if (cmd != NAND_CMD_NONE) {
+		__raw_writeb(cmd, this->legacy.IO_ADDR_W);
+		wmb();
+	}
+}
+
+static int au1300_nand_device_ready(struct nand_chip *this)
+{
+	return alchemy_rdsmem(AU1000_MEM_STSTAT) & 1;
+}
+
+static struct mtd_partition db1300_nand_parts[] = {
+	{
+		.name	= "NAND FS 0",
+		.offset = 0,
+		.size	= 8 * 1024 * 1024,
+	},
+	{
+		.name	= "NAND FS 1",
+		.offset = MTDPART_OFS_APPEND,
+		.size	= MTDPART_SIZ_FULL
+	},
+};
+
+struct platform_nand_data db1300_nand_platdata = {
+	.chip = {
+		.nr_chips	= 1,
+		.chip_offset	= 0,
+		.nr_partitions	= ARRAY_SIZE(db1300_nand_parts),
+		.partitions	= db1300_nand_parts,
+		.chip_delay	= 20,
+	},
+	.ctrl = {
+		.dev_ready	= au1300_nand_device_ready,
+		.cmd_ctrl	= au1300_nand_cmd_ctrl,
+	},
+};
+
+static struct resource db1300_nand_res[] = {
+	[0] = {
+		.start	= DB1300_NAND_PHYS_ADDR,
+		.end	= DB1300_NAND_PHYS_ADDR + 0xff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device db1300_nand_dev = {
+	.name		= "gen_nand",
+	.num_resources	= ARRAY_SIZE(db1300_nand_res),
+	.resource	= db1300_nand_res,
+	.id		= -1,
+	.dev		= {
+		.platform_data = &db1300_nand_platdata,
+	}
+};
+
+/**********************************************************************/
+
+static struct resource db1300_eth_res[] = {
+	[0] = {
+		.start		= DB1300_ETH_PHYS_ADDR,
+		.end		= DB1300_ETH_PHYS_END,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= DB1300_ETH_INT,
+		.end		= DB1300_ETH_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static u8 db1300_eth_macaddr[6];
+
+static const struct property_entry db1300_eth_props[] __initconst = {
+	PROPERTY_ENTRY_U32("reg-io-width", 4),
+	PROPERTY_ENTRY_U32("reg-shift", 0),
+	PROPERTY_ENTRY_BOOL("smsc,irq-push-pull"),
+	PROPERTY_ENTRY_STRING("phy-mode", "mii"),
+	PROPERTY_ENTRY_U8_ARRAY("local-mac-address", db1300_eth_macaddr),
+	{ }
+};
+
+static const struct platform_device_info db1300_eth_info __initconst = {
+	.name		= "smsc911x",
+	.id		= PLATFORM_DEVID_NONE,
+	.res		= db1300_eth_res,
+	.num_res	= ARRAY_SIZE(db1300_eth_res),
+	.properties	= db1300_eth_props,
+};
+
+static void __init db1300_eth_init(void)
+{
+	struct platform_device *pd;
+	int err;
+
+	prom_get_ethernet_addr(db1300_eth_macaddr);
+
+	pd = platform_device_register_full(&db1300_eth_info);
+	err = PTR_ERR_OR_ZERO(pd);
+	if (err)
+		pr_err("failed to create eth device: %d\n", err);
+}
+
+/**********************************************************************/
+
+static struct resource au1300_psc1_res[] = {
+	[0] = {
+		.start	= AU1300_PSC1_PHYS_ADDR,
+		.end	= AU1300_PSC1_PHYS_ADDR + 0x0fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1300_PSC1_INT,
+		.end	= AU1300_PSC1_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1300_DSCR_CMD0_PSC1_TX,
+		.end	= AU1300_DSCR_CMD0_PSC1_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1300_DSCR_CMD0_PSC1_RX,
+		.end	= AU1300_DSCR_CMD0_PSC1_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1300_ac97_dev = {
+	.name		= "au1xpsc_ac97",
+	.id		= 1,	/* PSC ID. match with AC97 codec ID! */
+	.num_resources	= ARRAY_SIZE(au1300_psc1_res),
+	.resource	= au1300_psc1_res,
+};
+
+/**********************************************************************/
+
+static struct resource au1300_psc2_res[] = {
+	[0] = {
+		.start	= AU1300_PSC2_PHYS_ADDR,
+		.end	= AU1300_PSC2_PHYS_ADDR + 0x0fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1300_PSC2_INT,
+		.end	= AU1300_PSC2_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1300_DSCR_CMD0_PSC2_TX,
+		.end	= AU1300_DSCR_CMD0_PSC2_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1300_DSCR_CMD0_PSC2_RX,
+		.end	= AU1300_DSCR_CMD0_PSC2_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1300_i2s_dev = {
+	.name		= "au1xpsc_i2s",
+	.id		= 2,	/* PSC ID */
+	.num_resources	= ARRAY_SIZE(au1300_psc2_res),
+	.resource	= au1300_psc2_res,
+};
+
+/**********************************************************************/
+
+static struct resource au1300_psc3_res[] = {
+	[0] = {
+		.start	= AU1300_PSC3_PHYS_ADDR,
+		.end	= AU1300_PSC3_PHYS_ADDR + 0x0fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1300_PSC3_INT,
+		.end	= AU1300_PSC3_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1300_DSCR_CMD0_PSC3_TX,
+		.end	= AU1300_DSCR_CMD0_PSC3_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1300_DSCR_CMD0_PSC3_RX,
+		.end	= AU1300_DSCR_CMD0_PSC3_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1300_i2c_dev = {
+	.name		= "au1xpsc_smbus",
+	.id		= 0,	/* bus number */
+	.num_resources	= ARRAY_SIZE(au1300_psc3_res),
+	.resource	= au1300_psc3_res,
+};
+
+/**********************************************************************/
+
+static const struct property_entry db1300_5waysw_props[] = {
+	PROPERTY_ENTRY_BOOL("autorepeat"),
+	PROPERTY_ENTRY_STRING("label", "db1300-5wayswitch"),
+	{ }
+};
+
+/* proper key assignments when facing the LCD panel.  For key assignments
+ * according to the schematics swap up with down and left with right.
+ * I chose to use it to emulate the arrow keys of a keyboard.
+ */
+static const struct software_node db1300_5waysw_node = {
+	.name = "db1300-5wayswitch",
+	.properties = db1300_5waysw_props,
+};
+
+static const struct property_entry db1300_5waysw_down_props[] = {
+	PROPERTY_ENTRY_U32("linux,code", KEY_DOWN),
+	PROPERTY_ENTRY_GPIO("gpios", &alchemy_gpic_node,
+			    AU1300_PIN_LCDPWM0, GPIO_ACTIVE_LOW),
+	PROPERTY_ENTRY_U32("debounce-interval", 1),
+	PROPERTY_ENTRY_STRING("label", "5waysw-down"),
+	{ }
+};
+
+static const struct software_node db1300_5waysw_down_node = {
+	.name = "5waysw-down",
+	.parent = &db1300_5waysw_node,
+	.properties = db1300_5waysw_down_props,
+};
+
+static const struct property_entry db1300_5waysw_up_props[] = {
+	PROPERTY_ENTRY_U32("linux,code", KEY_UP),
+	PROPERTY_ENTRY_GPIO("gpios", &alchemy_gpic_node,
+			    AU1300_PIN_PSC2SYNC1, GPIO_ACTIVE_LOW),
+	PROPERTY_ENTRY_U32("debounce-interval", 1),
+	PROPERTY_ENTRY_STRING("label", "5waysw-up"),
+	{ }
+};
+
+static const struct software_node db1300_5waysw_up_node = {
+	.name = "5waysw-up",
+	.parent = &db1300_5waysw_node,
+	.properties = db1300_5waysw_up_props,
+};
+
+static const struct property_entry db1300_5waysw_right_props[] = {
+	PROPERTY_ENTRY_U32("linux,code", KEY_RIGHT),
+	PROPERTY_ENTRY_GPIO("gpios", &alchemy_gpic_node,
+			    AU1300_PIN_WAKE3, GPIO_ACTIVE_LOW),
+	PROPERTY_ENTRY_U32("debounce-interval", 1),
+	PROPERTY_ENTRY_STRING("label", "5waysw-right"),
+	{ }
+};
+
+static const struct software_node db1300_5waysw_right_node = {
+	.name = "5waysw-right",
+	.parent = &db1300_5waysw_node,
+	.properties = db1300_5waysw_right_props,
+};
+
+static const struct property_entry db1300_5waysw_left_props[] = {
+	PROPERTY_ENTRY_U32("linux,code", KEY_LEFT),
+	PROPERTY_ENTRY_GPIO("gpios", &alchemy_gpic_node,
+			    AU1300_PIN_WAKE2, GPIO_ACTIVE_LOW),
+	PROPERTY_ENTRY_U32("debounce-interval", 1),
+	PROPERTY_ENTRY_STRING("label", "5waysw-left"),
+	{ }
+};
+
+static const struct software_node db1300_5waysw_left_node = {
+	.name = "5waysw-left",
+	.parent = &db1300_5waysw_node,
+	.properties = db1300_5waysw_left_props,
+};
+
+static const struct property_entry db1300_5waysw_push_props[] = {
+	PROPERTY_ENTRY_U32("linux,code", KEY_ENTER),
+	PROPERTY_ENTRY_GPIO("gpios", &alchemy_gpic_node,
+			    AU1300_PIN_WAKE1, GPIO_ACTIVE_LOW),
+	PROPERTY_ENTRY_U32("debounce-interval", 1),
+	PROPERTY_ENTRY_STRING("label", "5waysw-push"),
+	{ }
+};
+
+static const struct software_node db1300_5waysw_push_node = {
+	.name = "5waysw-push",
+	.parent = &db1300_5waysw_node,
+	.properties = db1300_5waysw_push_props,
+};
+
+static const struct software_node * const db1300_5waysw_swnodes[] __initconst = {
+	&db1300_5waysw_node,
+	&db1300_5waysw_down_node,
+	&db1300_5waysw_up_node,
+	&db1300_5waysw_right_node,
+	&db1300_5waysw_left_node,
+	&db1300_5waysw_push_node,
+	NULL
+};
+
+static void __init db1300_5waysw_init(void)
+{
+	const struct platform_device_info pdevinfo = {
+		.name	= "gpio-keys",
+		.id	= PLATFORM_DEVID_NONE,
+		.swnode	= &db1300_5waysw_node,
+	};
+	struct platform_device *pd;
+	int err;
+
+	err = software_node_register_node_group(db1300_5waysw_swnodes);
+	if (err) {
+		pr_err("failed to register 5waysw software nodes: %d\n", err);
+		return;
+	}
+
+	pd = platform_device_register_full(&pdevinfo);
+	err = PTR_ERR_OR_ZERO(pd);
+	if (err)
+		pr_err("failed to create 5waysw device: %d\n", err);
+}
+
+/**********************************************************************/
+
+static struct pata_platform_info db1300_ide_info = {
+	.ioport_shift	= DB1300_IDE_REG_SHIFT,
+};
+
+#define IDE_ALT_START	(14 << DB1300_IDE_REG_SHIFT)
+static struct resource db1300_ide_res[] = {
+	[0] = {
+		.start	= DB1300_IDE_PHYS_ADDR,
+		.end	= DB1300_IDE_PHYS_ADDR + IDE_ALT_START - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= DB1300_IDE_PHYS_ADDR + IDE_ALT_START,
+		.end	= DB1300_IDE_PHYS_ADDR + DB1300_IDE_PHYS_LEN - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[2] = {
+		.start	= DB1300_IDE_INT,
+		.end	= DB1300_IDE_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device db1300_ide_dev = {
+	.dev	= {
+		.dma_mask		= &au1300_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data	= &db1300_ide_info,
+	},
+	.name		= "pata_platform",
+	.resource	= db1300_ide_res,
+	.num_resources	= ARRAY_SIZE(db1300_ide_res),
+};
+
+/**********************************************************************/
+
+#ifdef CONFIG_MMC_AU1X
+static irqreturn_t db1300_mmc_cd(int irq, void *ptr)
+{
+	disable_irq_nosync(irq);
+	return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t db1300_mmc_cdfn(int irq, void *ptr)
+{
+	mmc_detect_change(ptr, msecs_to_jiffies(200));
+
+	msleep(100);	/* debounce */
+	if (irq == DB1300_SD1_INSERT_INT)
+		enable_irq(DB1300_SD1_EJECT_INT);
+	else
+		enable_irq(DB1300_SD1_INSERT_INT);
+
+	return IRQ_HANDLED;
+}
+
+static int db1300_mmc_card_readonly(void *mmc_host)
+{
+	/* it uses SD1 interface, but the DB1200's SD0 bit in the CPLD */
+	return bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP;
+}
+
+static int db1300_mmc_card_inserted(void *mmc_host)
+{
+	return bcsr_read(BCSR_SIGSTAT) & (1 << 12); /* insertion irq signal */
+}
+
+static int db1300_mmc_cd_setup(void *mmc_host, int en)
+{
+	int ret;
+
+	if (en) {
+		ret = request_threaded_irq(DB1300_SD1_INSERT_INT, db1300_mmc_cd,
+				db1300_mmc_cdfn, 0, "sd_insert", mmc_host);
+		if (ret)
+			goto out;
+
+		ret = request_threaded_irq(DB1300_SD1_EJECT_INT, db1300_mmc_cd,
+				db1300_mmc_cdfn, 0, "sd_eject", mmc_host);
+		if (ret) {
+			free_irq(DB1300_SD1_INSERT_INT, mmc_host);
+			goto out;
+		}
+
+		if (db1300_mmc_card_inserted(mmc_host))
+			enable_irq(DB1300_SD1_EJECT_INT);
+		else
+			enable_irq(DB1300_SD1_INSERT_INT);
+
+	} else {
+		free_irq(DB1300_SD1_INSERT_INT, mmc_host);
+		free_irq(DB1300_SD1_EJECT_INT, mmc_host);
+	}
+	ret = 0;
+out:
+	return ret;
+}
+
+static void db1300_mmcled_set(struct led_classdev *led,
+			      enum led_brightness brightness)
+{
+	if (brightness != LED_OFF)
+		bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0);
+	else
+		bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0);
+}
+
+static struct led_classdev db1300_mmc_led = {
+	.brightness_set = db1300_mmcled_set,
+};
+
+struct au1xmmc_platform_data db1300_sd1_platdata = {
+	.cd_setup	= db1300_mmc_cd_setup,
+	.card_inserted	= db1300_mmc_card_inserted,
+	.card_readonly	= db1300_mmc_card_readonly,
+	.led		= &db1300_mmc_led,
+};
+
+static struct resource au1300_sd1_res[] = {
+	[0] = {
+		.start	= AU1300_SD1_PHYS_ADDR,
+		.end	= AU1300_SD1_PHYS_ADDR,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1300_SD1_INT,
+		.end	= AU1300_SD1_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1300_DSCR_CMD0_SDMS_TX1,
+		.end	= AU1300_DSCR_CMD0_SDMS_TX1,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1300_DSCR_CMD0_SDMS_RX1,
+		.end	= AU1300_DSCR_CMD0_SDMS_RX1,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1300_sd1_dev = {
+	.dev = {
+		.dma_mask		= &au1300_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1300_sd1_platdata,
+	},
+	.name		= "au1xxx-mmc",
+	.id		= 1,
+	.resource	= au1300_sd1_res,
+	.num_resources	= ARRAY_SIZE(au1300_sd1_res),
+};
+
+/**********************************************************************/
+
+static int db1300_movinand_inserted(void *mmc_host)
+{
+	return 0; /* disable for now, it doesn't work yet */
+}
+
+static int db1300_movinand_readonly(void *mmc_host)
+{
+	return 0;
+}
+
+static void db1300_movinand_led_set(struct led_classdev *led,
+				    enum led_brightness brightness)
+{
+	if (brightness != LED_OFF)
+		bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED1, 0);
+	else
+		bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED1);
+}
+
+static struct led_classdev db1300_movinand_led = {
+	.brightness_set		= db1300_movinand_led_set,
+};
+
+struct au1xmmc_platform_data db1300_sd0_platdata = {
+	.card_inserted		= db1300_movinand_inserted,
+	.card_readonly		= db1300_movinand_readonly,
+	.led			= &db1300_movinand_led,
+	.mask_host_caps		= MMC_CAP_NEEDS_POLL,
+};
+
+static struct resource au1300_sd0_res[] = {
+	[0] = {
+		.start	= AU1100_SD0_PHYS_ADDR,
+		.end	= AU1100_SD0_PHYS_ADDR,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1300_SD0_INT,
+		.end	= AU1300_SD0_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1300_DSCR_CMD0_SDMS_TX0,
+		.end	= AU1300_DSCR_CMD0_SDMS_TX0,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1300_DSCR_CMD0_SDMS_RX0,
+		.end	= AU1300_DSCR_CMD0_SDMS_RX0,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1300_sd0_dev = {
+	.dev = {
+		.dma_mask		= &au1300_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1300_sd0_platdata,
+	},
+	.name		= "au1xxx-mmc",
+	.id		= 0,
+	.resource	= au1300_sd0_res,
+	.num_resources	= ARRAY_SIZE(au1300_sd0_res),
+};
+#endif /* CONFIG_MMC_AU1X */
+
+/**********************************************************************/
+
+static struct platform_device db1300_wm9715_dev = {
+	.name		= "wm9712-codec",
+	.id		= 1,	/* ID of PSC for AC97 audio, see asoc glue! */
+};
+
+static struct platform_device db1300_ac97dma_dev = {
+	.name		= "au1xpsc-pcm",
+	.id		= 1,	/* PSC ID */
+};
+
+static struct platform_device db1300_i2sdma_dev = {
+	.name		= "au1xpsc-pcm",
+	.id		= 2,	/* PSC ID */
+};
+
+static struct platform_device db1300_sndac97_dev = {
+	.name		= "db1300-ac97",
+	.dev = {
+		.dma_mask		= &au1300_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+	},
+};
+
+static struct platform_device db1300_sndi2s_dev = {
+	.name		= "db1300-i2s",
+	.dev = {
+		.dma_mask		= &au1300_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+	},
+};
+
+/**********************************************************************/
+
+static int db1300fb_panel_index(void)
+{
+	return 9;	/* DB1300_800x480 */
+}
+
+static int db1300fb_panel_init(void)
+{
+	/* Apply power (Vee/Vdd logic is inverted on Panel DB1300_800x480) */
+	bcsr_mod(BCSR_BOARD, BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD,
+			     BCSR_BOARD_LCDBL);
+	return 0;
+}
+
+static int db1300fb_panel_shutdown(void)
+{
+	/* Remove power (Vee/Vdd logic is inverted on Panel DB1300_800x480) */
+	bcsr_mod(BCSR_BOARD, BCSR_BOARD_LCDBL,
+			     BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD);
+	return 0;
+}
+
+static struct au1200fb_platdata db1300fb_pd = {
+	.panel_index	= db1300fb_panel_index,
+	.panel_init	= db1300fb_panel_init,
+	.panel_shutdown = db1300fb_panel_shutdown,
+};
+
+static struct resource au1300_lcd_res[] = {
+	[0] = {
+		.start	= AU1200_LCD_PHYS_ADDR,
+		.end	= AU1200_LCD_PHYS_ADDR + 0x800 - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1300_LCD_INT,
+		.end	= AU1300_LCD_INT,
+		.flags	= IORESOURCE_IRQ,
+	}
+};
+
+
+static struct platform_device db1300_lcd_dev = {
+	.name		= "au1200-lcd",
+	.id		= 0,
+	.dev = {
+		.dma_mask		= &au1300_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1300fb_pd,
+	},
+	.num_resources	= ARRAY_SIZE(au1300_lcd_res),
+	.resource	= au1300_lcd_res,
+};
+
+/**********************************************************************/
+
+#if IS_ENABLED(CONFIG_TOUCHSCREEN_WM97XX)
+static struct wm97xx_mach_ops db1300_wm97xx_ops = {
+	.irq_gpio	= WM97XX_GPIO_3,
+};
+
+static int db1300_wm97xx_probe(struct platform_device *pdev)
+{
+	struct wm97xx *wm = platform_get_drvdata(pdev);
+
+	/* external pendown indicator */
+	wm97xx_config_gpio(wm, WM97XX_GPIO_13, WM97XX_GPIO_IN,
+			   WM97XX_GPIO_POL_LOW, WM97XX_GPIO_STICKY,
+			   WM97XX_GPIO_WAKE);
+
+	/* internal "virtual" pendown gpio */
+	wm97xx_config_gpio(wm, WM97XX_GPIO_3, WM97XX_GPIO_OUT,
+			   WM97XX_GPIO_POL_LOW, WM97XX_GPIO_NOTSTICKY,
+			   WM97XX_GPIO_NOWAKE);
+
+	wm->pen_irq = DB1300_AC97_PEN_INT;
+
+	return wm97xx_register_mach_ops(wm, &db1300_wm97xx_ops);
+}
+#else
+static int db1300_wm97xx_probe(struct platform_device *pdev)
+{
+	return -ENODEV;
+}
+#endif
+
+static struct platform_driver db1300_wm97xx_driver = {
+	.driver.name	= "wm97xx-touch",
+	.driver.owner	= THIS_MODULE,
+	.probe		= db1300_wm97xx_probe,
+};
+
+/**********************************************************************/
+
+static struct platform_device *db1300_dev[] __initdata = {
+	&db1300_i2c_dev,
+	&db1300_nand_dev,
+	&db1300_ide_dev,
+#ifdef CONFIG_MMC_AU1X
+	&db1300_sd0_dev,
+	&db1300_sd1_dev,
+#endif
+	&db1300_lcd_dev,
+	&db1300_ac97_dev,
+	&db1300_i2s_dev,
+	&db1300_wm9715_dev,
+	&db1300_ac97dma_dev,
+	&db1300_i2sdma_dev,
+	&db1300_sndac97_dev,
+	&db1300_sndi2s_dev,
+};
+
+int __init db1300_dev_setup(void)
+{
+	int swapped, cpldirq;
+	struct clk *c;
+
+	/* setup CPLD IRQ muxer */
+	cpldirq = au1300_gpio_to_irq(AU1300_PIN_EXTCLK1);
+	irq_set_irq_type(cpldirq, IRQ_TYPE_LEVEL_HIGH);
+	bcsr_init_irq(DB1300_FIRST_INT, DB1300_LAST_INT, cpldirq);
+
+	/* insert/eject IRQs: one always triggers so don't enable them
+	 * when doing request_irq() on them.  DB1200 has this bug too.
+	 */
+	irq_set_status_flags(DB1300_SD1_INSERT_INT, IRQ_NOAUTOEN);
+	irq_set_status_flags(DB1300_SD1_EJECT_INT, IRQ_NOAUTOEN);
+	irq_set_status_flags(DB1300_CF_INSERT_INT, IRQ_NOAUTOEN);
+	irq_set_status_flags(DB1300_CF_EJECT_INT, IRQ_NOAUTOEN);
+
+	/*
+	 * setup board
+	 */
+	i2c_register_board_info(0, db1300_i2c_devs,
+				ARRAY_SIZE(db1300_i2c_devs));
+
+	if (platform_driver_register(&db1300_wm97xx_driver))
+		pr_warn("DB1300: failed to init touch pen irq support!\n");
+
+	/* Audio PSC clock is supplied by codecs (PSC1, 2) */
+	__raw_writel(PSC_SEL_CLK_SERCLK,
+	    (void __iomem *)KSEG1ADDR(AU1300_PSC1_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+	__raw_writel(PSC_SEL_CLK_SERCLK,
+	    (void __iomem *)KSEG1ADDR(AU1300_PSC2_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+	/* I2C driver wants 50MHz, get as close as possible */
+	c = clk_get(NULL, "psc3_intclk");
+	if (!IS_ERR(c)) {
+		clk_set_rate(c, 50000000);
+		clk_prepare_enable(c);
+		clk_put(c);
+	}
+	__raw_writel(PSC_SEL_CLK_INTCLK,
+	    (void __iomem *)KSEG1ADDR(AU1300_PSC3_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+
+	/* enable power to USB ports */
+	bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_USBHPWR | BCSR_RESETS_OTGPWR);
+
+	/* although it is socket #0, it uses the CPLD bits which previous boards
+	 * have used for socket #1.
+	 */
+	db1x_register_pcmcia_socket(
+		AU1000_PCMCIA_ATTR_PHYS_ADDR,
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x00400000 - 1,
+		AU1000_PCMCIA_MEM_PHYS_ADDR,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x00400000 - 1,
+		AU1000_PCMCIA_IO_PHYS_ADDR,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x00010000 - 1,
+		DB1300_CF_INT, DB1300_CF_INSERT_INT, 0, DB1300_CF_EJECT_INT, 1);
+
+	swapped = bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1200_SWAPBOOT;
+	db1x_register_norflash(64 << 20, 2, swapped);
+
+	db1300_eth_init();
+	db1300_5waysw_init();
+
+	return platform_add_devices(db1300_dev, ARRAY_SIZE(db1300_dev));
+}
+
+
+int __init db1300_board_setup(void)
+{
+	unsigned short whoami;
+
+	bcsr_init(DB1300_BCSR_PHYS_ADDR,
+		  DB1300_BCSR_PHYS_ADDR + DB1300_BCSR_HEXLED_OFS);
+
+	whoami = bcsr_read(BCSR_WHOAMI);
+	if (BCSR_WHOAMI_BOARD(whoami) != BCSR_WHOAMI_DB1300)
+		return -ENODEV;
+
+	db1300_gpio_config();
+
+	printk(KERN_INFO "NetLogic DBAu1300 Development Platform.\n\t"
+		"BoardID %d   CPLD Rev %d   DaughtercardID %d\n",
+		BCSR_WHOAMI_BOARD(whoami), BCSR_WHOAMI_CPLD(whoami),
+		BCSR_WHOAMI_DCID(whoami));
+
+	/* enable UARTs, YAMON only enables #2 */
+	alchemy_uart_enable(AU1300_UART0_PHYS_ADDR);
+	alchemy_uart_enable(AU1300_UART1_PHYS_ADDR);
+	alchemy_uart_enable(AU1300_UART3_PHYS_ADDR);
+
+	return 0;
+}
diff --git a/arch/mips/alchemy/devboards/db1550.c b/arch/mips/alchemy/devboards/db1550.c
new file mode 100644
index 000000000..579fc8f1e
--- /dev/null
+++ b/arch/mips/alchemy/devboards/db1550.c
@@ -0,0 +1,631 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Alchemy Db1550/Pb1550 board support
+ *
+ * (c) 2011 Manuel Lauss <manuel.lauss@googlemail.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/gpio/legacy.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/platnand.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
+#include <asm/bootinfo.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/gpio-au1000.h>
+#include <asm/mach-au1x00/au1xxx_eth.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+#include <asm/mach-au1x00/au1xxx_psc.h>
+#include <asm/mach-au1x00/au1550_spi.h>
+#include <asm/mach-au1x00/au1550nd.h>
+#include <asm/mach-db1x00/bcsr.h>
+#include <prom.h>
+
+#include "db1xxx.h"
+#include "platform.h"
+
+static void __init db1550_hw_setup(void)
+{
+	void __iomem *base;
+	unsigned long v;
+
+	/* complete pin setup: assign GPIO16 to PSC0_SYNC1 (SPI cs# line)
+	 * as well as PSC1_SYNC for AC97 on PB1550.
+	 */
+	v = alchemy_rdsys(AU1000_SYS_PINFUNC);
+	alchemy_wrsys(v | 1 | SYS_PF_PSC1_S1, AU1000_SYS_PINFUNC);
+
+	/* reset the AC97 codec now, the reset time in the psc-ac97 driver
+	 * is apparently too short although it's ridiculous as it is.
+	 */
+	base = (void __iomem *)KSEG1ADDR(AU1550_PSC1_PHYS_ADDR);
+	__raw_writel(PSC_SEL_CLK_SERCLK | PSC_SEL_PS_AC97MODE,
+		     base + PSC_SEL_OFFSET);
+	__raw_writel(PSC_CTRL_DISABLE, base + PSC_CTRL_OFFSET);
+	wmb();
+	__raw_writel(PSC_AC97RST_RST, base + PSC_AC97RST_OFFSET);
+	wmb();
+}
+
+int __init db1550_board_setup(void)
+{
+	unsigned short whoami;
+
+	bcsr_init(DB1550_BCSR_PHYS_ADDR,
+		  DB1550_BCSR_PHYS_ADDR + DB1550_BCSR_HEXLED_OFS);
+
+	whoami = bcsr_read(BCSR_WHOAMI); /* PB1550 hexled offset differs */
+	switch (BCSR_WHOAMI_BOARD(whoami)) {
+	case BCSR_WHOAMI_PB1550_SDR:
+	case BCSR_WHOAMI_PB1550_DDR:
+		bcsr_init(PB1550_BCSR_PHYS_ADDR,
+			  PB1550_BCSR_PHYS_ADDR + PB1550_BCSR_HEXLED_OFS);
+		break;
+	case BCSR_WHOAMI_DB1550:
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	pr_info("Alchemy/AMD %s Board, CPLD Rev %d Board-ID %d	"	\
+		"Daughtercard ID %d\n", get_system_type(),
+		(whoami >> 4) & 0xf, (whoami >> 8) & 0xf, whoami & 0xf);
+
+	db1550_hw_setup();
+	return 0;
+}
+
+/*****************************************************************************/
+
+static u64 au1550_all_dmamask = DMA_BIT_MASK(32);
+
+static struct mtd_partition db1550_spiflash_parts[] = {
+	{
+		.name	= "spi_flash",
+		.offset = 0,
+		.size	= MTDPART_SIZ_FULL,
+	},
+};
+
+static struct flash_platform_data db1550_spiflash_data = {
+	.name		= "s25fl010",
+	.parts		= db1550_spiflash_parts,
+	.nr_parts	= ARRAY_SIZE(db1550_spiflash_parts),
+	.type		= "m25p10",
+};
+
+static struct spi_board_info db1550_spi_devs[] __initdata = {
+	{
+		/* TI TMP121AIDBVR temp sensor */
+		.modalias	= "tmp121",
+		.max_speed_hz	= 2400000,
+		.bus_num	= 0,
+		.chip_select	= 0,
+		.mode		= SPI_MODE_0,
+	},
+	{
+		/* Spansion S25FL001D0FMA SPI flash */
+		.modalias	= "m25p80",
+		.max_speed_hz	= 2400000,
+		.bus_num	= 0,
+		.chip_select	= 1,
+		.mode		= SPI_MODE_0,
+		.platform_data	= &db1550_spiflash_data,
+	},
+};
+
+static struct i2c_board_info db1550_i2c_devs[] __initdata = {
+	{ I2C_BOARD_INFO("24c04",  0x52),}, /* AT24C04-10 I2C eeprom */
+	{ I2C_BOARD_INFO("ne1619", 0x2d),}, /* adm1025-compat hwmon */
+	{ I2C_BOARD_INFO("wm8731", 0x1b),}, /* I2S audio codec WM8731 */
+};
+
+/**********************************************************************/
+
+static void au1550_nand_cmd_ctrl(struct nand_chip *this, int cmd,
+				 unsigned int ctrl)
+{
+	unsigned long ioaddr = (unsigned long)this->legacy.IO_ADDR_W;
+
+	ioaddr &= 0xffffff00;
+
+	if (ctrl & NAND_CLE) {
+		ioaddr += MEM_STNAND_CMD;
+	} else if (ctrl & NAND_ALE) {
+		ioaddr += MEM_STNAND_ADDR;
+	} else {
+		/* assume we want to r/w real data  by default */
+		ioaddr += MEM_STNAND_DATA;
+	}
+	this->legacy.IO_ADDR_R = this->legacy.IO_ADDR_W = (void __iomem *)ioaddr;
+	if (cmd != NAND_CMD_NONE) {
+		__raw_writeb(cmd, this->legacy.IO_ADDR_W);
+		wmb();
+	}
+}
+
+static int au1550_nand_device_ready(struct nand_chip *this)
+{
+	return alchemy_rdsmem(AU1000_MEM_STSTAT) & 1;
+}
+
+static struct mtd_partition db1550_nand_parts[] = {
+	{
+		.name	= "NAND FS 0",
+		.offset = 0,
+		.size	= 8 * 1024 * 1024,
+	},
+	{
+		.name	= "NAND FS 1",
+		.offset = MTDPART_OFS_APPEND,
+		.size	= MTDPART_SIZ_FULL
+	},
+};
+
+struct platform_nand_data db1550_nand_platdata = {
+	.chip = {
+		.nr_chips	= 1,
+		.chip_offset	= 0,
+		.nr_partitions	= ARRAY_SIZE(db1550_nand_parts),
+		.partitions	= db1550_nand_parts,
+		.chip_delay	= 20,
+	},
+	.ctrl = {
+		.dev_ready	= au1550_nand_device_ready,
+		.cmd_ctrl	= au1550_nand_cmd_ctrl,
+	},
+};
+
+static struct resource db1550_nand_res[] = {
+	[0] = {
+		.start	= 0x20000000,
+		.end	= 0x200000ff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device db1550_nand_dev = {
+	.name		= "gen_nand",
+	.num_resources	= ARRAY_SIZE(db1550_nand_res),
+	.resource	= db1550_nand_res,
+	.id		= -1,
+	.dev		= {
+		.platform_data = &db1550_nand_platdata,
+	}
+};
+
+static struct au1550nd_platdata pb1550_nand_pd = {
+	.parts		= db1550_nand_parts,
+	.num_parts	= ARRAY_SIZE(db1550_nand_parts),
+	.devwidth	= 0,	/* x8 NAND default, needs fixing up */
+};
+
+static struct platform_device pb1550_nand_dev = {
+	.name		= "au1550-nand",
+	.id		= -1,
+	.resource	= db1550_nand_res,
+	.num_resources	= ARRAY_SIZE(db1550_nand_res),
+	.dev		= {
+		.platform_data	= &pb1550_nand_pd,
+	},
+};
+
+static void __init pb1550_nand_setup(void)
+{
+	int boot_swapboot = (alchemy_rdsmem(AU1000_MEM_STSTAT) & (0x7 << 1)) |
+			    ((bcsr_read(BCSR_STATUS) >> 6) & 0x1);
+
+	gpio_direction_input(206);	/* de-assert NAND CS# */
+	switch (boot_swapboot) {
+	case 0: case 2: case 8: case 0xC: case 0xD:
+		/* x16 NAND Flash */
+		pb1550_nand_pd.devwidth = 1;
+		fallthrough;
+	case 1: case 3: case 9: case 0xE: case 0xF:
+		/* x8 NAND, already set up */
+		platform_device_register(&pb1550_nand_dev);
+	}
+}
+
+/**********************************************************************/
+
+static struct resource au1550_psc0_res[] = {
+	[0] = {
+		.start	= AU1550_PSC0_PHYS_ADDR,
+		.end	= AU1550_PSC0_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1550_PSC0_INT,
+		.end	= AU1550_PSC0_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1550_DSCR_CMD0_PSC0_TX,
+		.end	= AU1550_DSCR_CMD0_PSC0_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1550_DSCR_CMD0_PSC0_RX,
+		.end	= AU1550_DSCR_CMD0_PSC0_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static void db1550_spi_cs_en(struct au1550_spi_info *spi, int cs, int pol)
+{
+	if (cs)
+		bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SPISEL);
+	else
+		bcsr_mod(BCSR_BOARD, BCSR_BOARD_SPISEL, 0);
+}
+
+static struct au1550_spi_info db1550_spi_platdata = {
+	.mainclk_hz	= 48000000,	/* PSC0 clock: max. 2.4MHz SPI clk */
+	.num_chipselect = 2,
+	.activate_cs	= db1550_spi_cs_en,
+};
+
+
+static struct platform_device db1550_spi_dev = {
+	.dev	= {
+		.dma_mask		= &au1550_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1550_spi_platdata,
+	},
+	.name		= "au1550-spi",
+	.id		= 0,	/* bus number */
+	.num_resources	= ARRAY_SIZE(au1550_psc0_res),
+	.resource	= au1550_psc0_res,
+};
+
+/**********************************************************************/
+
+static struct resource au1550_psc1_res[] = {
+	[0] = {
+		.start	= AU1550_PSC1_PHYS_ADDR,
+		.end	= AU1550_PSC1_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1550_PSC1_INT,
+		.end	= AU1550_PSC1_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1550_DSCR_CMD0_PSC1_TX,
+		.end	= AU1550_DSCR_CMD0_PSC1_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1550_DSCR_CMD0_PSC1_RX,
+		.end	= AU1550_DSCR_CMD0_PSC1_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1550_ac97_dev = {
+	.name		= "au1xpsc_ac97",
+	.id		= 1,	/* PSC ID */
+	.num_resources	= ARRAY_SIZE(au1550_psc1_res),
+	.resource	= au1550_psc1_res,
+};
+
+
+static struct resource au1550_psc2_res[] = {
+	[0] = {
+		.start	= AU1550_PSC2_PHYS_ADDR,
+		.end	= AU1550_PSC2_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1550_PSC2_INT,
+		.end	= AU1550_PSC2_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1550_DSCR_CMD0_PSC2_TX,
+		.end	= AU1550_DSCR_CMD0_PSC2_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1550_DSCR_CMD0_PSC2_RX,
+		.end	= AU1550_DSCR_CMD0_PSC2_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1550_i2c_dev = {
+	.name		= "au1xpsc_smbus",
+	.id		= 0,	/* bus number */
+	.num_resources	= ARRAY_SIZE(au1550_psc2_res),
+	.resource	= au1550_psc2_res,
+};
+
+/**********************************************************************/
+
+static struct resource au1550_psc3_res[] = {
+	[0] = {
+		.start	= AU1550_PSC3_PHYS_ADDR,
+		.end	= AU1550_PSC3_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1550_PSC3_INT,
+		.end	= AU1550_PSC3_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1550_DSCR_CMD0_PSC3_TX,
+		.end	= AU1550_DSCR_CMD0_PSC3_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1550_DSCR_CMD0_PSC3_RX,
+		.end	= AU1550_DSCR_CMD0_PSC3_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1550_i2s_dev = {
+	.name		= "au1xpsc_i2s",
+	.id		= 3,	/* PSC ID */
+	.num_resources	= ARRAY_SIZE(au1550_psc3_res),
+	.resource	= au1550_psc3_res,
+};
+
+/**********************************************************************/
+
+static struct platform_device db1550_stac_dev = {
+	.name		= "ac97-codec",
+	.id		= 1,	/* on PSC1 */
+};
+
+static struct platform_device db1550_ac97dma_dev = {
+	.name		= "au1xpsc-pcm",
+	.id		= 1,	/* on PSC3 */
+};
+
+static struct platform_device db1550_i2sdma_dev = {
+	.name		= "au1xpsc-pcm",
+	.id		= 3,	/* on PSC3 */
+};
+
+static struct platform_device db1550_sndac97_dev = {
+	.name		= "db1550-ac97",
+	.dev = {
+		.dma_mask		= &au1550_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+	},
+};
+
+static struct platform_device db1550_sndi2s_dev = {
+	.name		= "db1550-i2s",
+	.dev = {
+		.dma_mask		= &au1550_all_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+	},
+};
+
+/**********************************************************************/
+
+static int db1550_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
+{
+	if ((slot < 11) || (slot > 13) || pin == 0)
+		return -1;
+	if (slot == 11)
+		return (pin == 1) ? AU1550_PCI_INTC : 0xff;
+	if (slot == 12) {
+		switch (pin) {
+		case 1: return AU1550_PCI_INTB;
+		case 2: return AU1550_PCI_INTC;
+		case 3: return AU1550_PCI_INTD;
+		case 4: return AU1550_PCI_INTA;
+		}
+	}
+	if (slot == 13) {
+		switch (pin) {
+		case 1: return AU1550_PCI_INTA;
+		case 2: return AU1550_PCI_INTB;
+		case 3: return AU1550_PCI_INTC;
+		case 4: return AU1550_PCI_INTD;
+		}
+	}
+	return -1;
+}
+
+static int pb1550_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
+{
+	if ((slot < 12) || (slot > 13) || pin == 0)
+		return -1;
+	if (slot == 12) {
+		switch (pin) {
+		case 1: return AU1500_PCI_INTB;
+		case 2: return AU1500_PCI_INTC;
+		case 3: return AU1500_PCI_INTD;
+		case 4: return AU1500_PCI_INTA;
+		}
+	}
+	if (slot == 13) {
+		switch (pin) {
+		case 1: return AU1500_PCI_INTA;
+		case 2: return AU1500_PCI_INTB;
+		case 3: return AU1500_PCI_INTC;
+		case 4: return AU1500_PCI_INTD;
+		}
+	}
+	return -1;
+}
+
+static struct resource alchemy_pci_host_res[] = {
+	[0] = {
+		.start	= AU1500_PCI_PHYS_ADDR,
+		.end	= AU1500_PCI_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct alchemy_pci_platdata db1550_pci_pd = {
+	.board_map_irq	= db1550_map_pci_irq,
+};
+
+static struct platform_device db1550_pci_host_dev = {
+	.dev.platform_data = &db1550_pci_pd,
+	.name		= "alchemy-pci",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(alchemy_pci_host_res),
+	.resource	= alchemy_pci_host_res,
+};
+
+/**********************************************************************/
+
+static struct platform_device *db1550_devs[] __initdata = {
+	&db1550_i2c_dev,
+	&db1550_ac97_dev,
+	&db1550_spi_dev,
+	&db1550_i2s_dev,
+	&db1550_stac_dev,
+	&db1550_ac97dma_dev,
+	&db1550_i2sdma_dev,
+	&db1550_sndac97_dev,
+	&db1550_sndi2s_dev,
+};
+
+/* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */
+int __init db1550_pci_setup(int id)
+{
+	if (id)
+		db1550_pci_pd.board_map_irq = pb1550_map_pci_irq;
+	return platform_device_register(&db1550_pci_host_dev);
+}
+
+static void __init db1550_devices(void)
+{
+	alchemy_gpio_direction_output(203, 0);	/* red led on */
+
+	irq_set_irq_type(AU1550_GPIO0_INT, IRQ_TYPE_EDGE_BOTH);	 /* CD0# */
+	irq_set_irq_type(AU1550_GPIO1_INT, IRQ_TYPE_EDGE_BOTH);	 /* CD1# */
+	irq_set_irq_type(AU1550_GPIO3_INT, IRQ_TYPE_LEVEL_LOW);	 /* CARD0# */
+	irq_set_irq_type(AU1550_GPIO5_INT, IRQ_TYPE_LEVEL_LOW);	 /* CARD1# */
+	irq_set_irq_type(AU1550_GPIO21_INT, IRQ_TYPE_LEVEL_LOW); /* STSCHG0# */
+	irq_set_irq_type(AU1550_GPIO22_INT, IRQ_TYPE_LEVEL_LOW); /* STSCHG1# */
+
+	db1x_register_pcmcia_socket(
+		AU1000_PCMCIA_ATTR_PHYS_ADDR,
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
+		AU1000_PCMCIA_MEM_PHYS_ADDR,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x000400000 - 1,
+		AU1000_PCMCIA_IO_PHYS_ADDR,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x000010000 - 1,
+		AU1550_GPIO3_INT, 0,
+		/*AU1550_GPIO21_INT*/0, 0, 0);
+
+	db1x_register_pcmcia_socket(
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000,
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004000000,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004400000 - 1,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004000000,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004010000 - 1,
+		AU1550_GPIO5_INT, 1,
+		/*AU1550_GPIO22_INT*/0, 0, 1);
+
+	platform_device_register(&db1550_nand_dev);
+
+	alchemy_gpio_direction_output(202, 0);	/* green led on */
+}
+
+static void __init pb1550_devices(void)
+{
+	irq_set_irq_type(AU1550_GPIO0_INT, IRQ_TYPE_LEVEL_LOW);
+	irq_set_irq_type(AU1550_GPIO1_INT, IRQ_TYPE_LEVEL_LOW);
+	irq_set_irq_type(AU1550_GPIO201_205_INT, IRQ_TYPE_LEVEL_HIGH);
+
+	/* enable both PCMCIA card irqs in the shared line */
+	alchemy_gpio2_enable_int(201);	/* socket 0 card irq */
+	alchemy_gpio2_enable_int(202);	/* socket 1 card irq */
+
+	/* Pb1550, like all others, also has statuschange irqs; however they're
+	* wired up on one of the Au1550's shared GPIO201_205 line, which also
+	* services the PCMCIA card interrupts.	So we ignore statuschange and
+	* use the GPIO201_205 exclusively for card interrupts, since a) pcmcia
+	* drivers are used to shared irqs and b) statuschange isn't really use-
+	* ful anyway.
+	*/
+	db1x_register_pcmcia_socket(
+		AU1000_PCMCIA_ATTR_PHYS_ADDR,
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
+		AU1000_PCMCIA_MEM_PHYS_ADDR,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x000400000 - 1,
+		AU1000_PCMCIA_IO_PHYS_ADDR,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x000010000 - 1,
+		AU1550_GPIO201_205_INT, AU1550_GPIO0_INT, 0, 0, 0);
+
+	db1x_register_pcmcia_socket(
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x008000000,
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x008400000 - 1,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x008000000,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x008400000 - 1,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x008000000,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x008010000 - 1,
+		AU1550_GPIO201_205_INT, AU1550_GPIO1_INT, 0, 0, 1);
+
+	pb1550_nand_setup();
+}
+
+int __init db1550_dev_setup(void)
+{
+	int swapped, id;
+	struct clk *c;
+
+	id = (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) != BCSR_WHOAMI_DB1550);
+
+	i2c_register_board_info(0, db1550_i2c_devs,
+				ARRAY_SIZE(db1550_i2c_devs));
+	spi_register_board_info(db1550_spi_devs,
+				ARRAY_SIZE(db1550_spi_devs));
+
+	c = clk_get(NULL, "psc0_intclk");
+	if (!IS_ERR(c)) {
+		clk_set_rate(c, 50000000);
+		clk_prepare_enable(c);
+		clk_put(c);
+	}
+	c = clk_get(NULL, "psc2_intclk");
+	if (!IS_ERR(c)) {
+		clk_set_rate(c, db1550_spi_platdata.mainclk_hz);
+		clk_prepare_enable(c);
+		clk_put(c);
+	}
+
+	/* Audio PSC clock is supplied by codecs (PSC1, 3) FIXME: platdata!! */
+	__raw_writel(PSC_SEL_CLK_SERCLK,
+	    (void __iomem *)KSEG1ADDR(AU1550_PSC1_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+	__raw_writel(PSC_SEL_CLK_SERCLK,
+	    (void __iomem *)KSEG1ADDR(AU1550_PSC3_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+	/* SPI/I2C use internally supplied 50MHz source */
+	__raw_writel(PSC_SEL_CLK_INTCLK,
+	    (void __iomem *)KSEG1ADDR(AU1550_PSC0_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+	__raw_writel(PSC_SEL_CLK_INTCLK,
+	    (void __iomem *)KSEG1ADDR(AU1550_PSC2_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+
+	id ? pb1550_devices() : db1550_devices();
+
+	swapped = bcsr_read(BCSR_STATUS) &
+	       (id ? BCSR_STATUS_PB1550_SWAPBOOT : BCSR_STATUS_DB1000_SWAPBOOT);
+	db1x_register_norflash(128 << 20, 4, swapped);
+
+	return platform_add_devices(db1550_devs, ARRAY_SIZE(db1550_devs));
+}
diff --git a/arch/mips/alchemy/devboards/db1xxx.c b/arch/mips/alchemy/devboards/db1xxx.c
new file mode 100644
index 000000000..2e8c68d97
--- /dev/null
+++ b/arch/mips/alchemy/devboards/db1xxx.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Alchemy DB/PB1xxx board support.
+ */
+
+#include <asm/prom.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-db1x00/bcsr.h>
+
+#include "db1xxx.h"
+
+static const char *board_type_str(void)
+{
+	switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
+	case BCSR_WHOAMI_DB1000:
+		return "DB1000";
+	case BCSR_WHOAMI_DB1500:
+		return "DB1500";
+	case BCSR_WHOAMI_DB1100:
+		return "DB1100";
+	case BCSR_WHOAMI_PB1500:
+	case BCSR_WHOAMI_PB1500R2:
+		return "PB1500";
+	case BCSR_WHOAMI_PB1100:
+		return "PB1100";
+	case BCSR_WHOAMI_PB1200_DDR1:
+	case BCSR_WHOAMI_PB1200_DDR2:
+		return "PB1200";
+	case BCSR_WHOAMI_DB1200:
+		return "DB1200";
+	case BCSR_WHOAMI_DB1300:
+		return "DB1300";
+	case BCSR_WHOAMI_DB1550:
+		return "DB1550";
+	case BCSR_WHOAMI_PB1550_SDR:
+	case BCSR_WHOAMI_PB1550_DDR:
+		return "PB1550";
+	default:
+		return "(unknown)";
+	}
+}
+
+const char *get_system_type(void)
+{
+	return board_type_str();
+}
+
+void __init board_setup(void)
+{
+	int ret;
+
+	switch (alchemy_get_cputype()) {
+	case ALCHEMY_CPU_AU1000:
+	case ALCHEMY_CPU_AU1500:
+	case ALCHEMY_CPU_AU1100:
+		ret = db1000_board_setup();
+		break;
+	case ALCHEMY_CPU_AU1550:
+		ret = db1550_board_setup();
+		break;
+	case ALCHEMY_CPU_AU1200:
+		ret = db1200_board_setup();
+		break;
+	case ALCHEMY_CPU_AU1300:
+		ret = db1300_board_setup();
+		break;
+	default:
+		pr_err("unsupported CPU on board\n");
+		ret = -ENODEV;
+	}
+	if (ret)
+		panic("cannot initialize board support");
+}
+
+static int __init db1xxx_arch_init(void)
+{
+	int id = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
+	if (id == BCSR_WHOAMI_DB1550)
+		return db1550_pci_setup(0);
+	else if ((id == BCSR_WHOAMI_PB1550_SDR) ||
+		 (id == BCSR_WHOAMI_PB1550_DDR))
+		return db1550_pci_setup(1);
+	else if ((id == BCSR_WHOAMI_DB1500) || (id == BCSR_WHOAMI_PB1500) ||
+		 (id == BCSR_WHOAMI_PB1500R2))
+		return db1500_pci_setup();
+
+	return 0;
+}
+arch_initcall(db1xxx_arch_init);
+
+static int __init db1xxx_dev_init(void)
+{
+	mips_set_machine_name(board_type_str());
+	switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
+	case BCSR_WHOAMI_DB1000:
+	case BCSR_WHOAMI_DB1500:
+	case BCSR_WHOAMI_DB1100:
+	case BCSR_WHOAMI_PB1500:
+	case BCSR_WHOAMI_PB1500R2:
+	case BCSR_WHOAMI_PB1100:
+		return db1000_dev_setup();
+	case BCSR_WHOAMI_PB1200_DDR1:
+	case BCSR_WHOAMI_PB1200_DDR2:
+	case BCSR_WHOAMI_DB1200:
+		return db1200_dev_setup();
+	case BCSR_WHOAMI_DB1300:
+		return db1300_dev_setup();
+	case BCSR_WHOAMI_DB1550:
+	case BCSR_WHOAMI_PB1550_SDR:
+	case BCSR_WHOAMI_PB1550_DDR:
+		return db1550_dev_setup();
+	}
+	return 0;
+}
+device_initcall(db1xxx_dev_init);
diff --git a/arch/mips/alchemy/devboards/db1xxx.h b/arch/mips/alchemy/devboards/db1xxx.h
new file mode 100644
index 000000000..f39e3551e
--- /dev/null
+++ b/arch/mips/alchemy/devboards/db1xxx.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __LINUX_MIPS_DB1XXX__
+#define __LINUX_MIPS_DB1XXX__
+
+const char *get_system_type(void);
+int db1000_board_setup(void);
+int db1000_dev_setup(void);
+int db1500_pci_setup(void);
+int db1200_board_setup(void);
+int db1200_dev_setup(void);
+int db1300_board_setup(void);
+int db1300_dev_setup(void);
+int db1550_board_setup(void);
+int db1550_dev_setup(void);
+int db1550_pci_setup(int id);
+
+#endif /* __LINUX_MIPS_DB1XXX__ */
diff --git a/arch/mips/alchemy/devboards/platform.c b/arch/mips/alchemy/devboards/platform.c
new file mode 100644
index 000000000..fbc93d729
--- /dev/null
+++ b/arch/mips/alchemy/devboards/platform.c
@@ -0,0 +1,250 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * devoard misc stuff.
+ */
+
+#include <linux/init.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/physmap.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+
+#include <asm/bootinfo.h>
+#include <asm/idle.h>
+#include <asm/reboot.h>
+#include <asm/setup.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-db1x00/bcsr.h>
+
+#include <prom.h>
+
+#include "platform.h"
+
+void prom_putchar(char c)
+{
+	if (alchemy_get_cputype() == ALCHEMY_CPU_AU1300)
+		alchemy_uart_putchar(AU1300_UART2_PHYS_ADDR, c);
+	else
+		alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
+}
+
+
+static struct platform_device db1x00_rtc_dev = {
+	.name	= "rtc-au1xxx",
+	.id	= -1,
+};
+
+
+static void db1x_power_off(void)
+{
+	bcsr_write(BCSR_RESETS, 0);
+	bcsr_write(BCSR_SYSTEM, BCSR_SYSTEM_PWROFF | BCSR_SYSTEM_RESET);
+	while (1)		/* sit and spin */
+		cpu_wait();
+}
+
+static void db1x_reset(char *c)
+{
+	bcsr_write(BCSR_RESETS, 0);
+	bcsr_write(BCSR_SYSTEM, 0);
+}
+
+static int __init db1x_late_setup(void)
+{
+	if (!pm_power_off)
+		pm_power_off = db1x_power_off;
+	if (!_machine_halt)
+		_machine_halt = db1x_power_off;
+	if (!_machine_restart)
+		_machine_restart = db1x_reset;
+
+	platform_device_register(&db1x00_rtc_dev);
+
+	return 0;
+}
+device_initcall(db1x_late_setup);
+
+/* register a pcmcia socket */
+int __init db1x_register_pcmcia_socket(phys_addr_t pcmcia_attr_start,
+				       phys_addr_t pcmcia_attr_end,
+				       phys_addr_t pcmcia_mem_start,
+				       phys_addr_t pcmcia_mem_end,
+				       phys_addr_t pcmcia_io_start,
+				       phys_addr_t pcmcia_io_end,
+				       int card_irq,
+				       int cd_irq,
+				       int stschg_irq,
+				       int eject_irq,
+				       int id)
+{
+	int cnt, i, ret;
+	struct resource *sr;
+	struct platform_device *pd;
+
+	cnt = 5;
+	if (eject_irq)
+		cnt++;
+	if (stschg_irq)
+		cnt++;
+
+	sr = kzalloc_objs(struct resource, cnt);
+	if (!sr)
+		return -ENOMEM;
+
+	pd = platform_device_alloc("db1xxx_pcmcia", id);
+	if (!pd) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	sr[0].name	= "pcmcia-attr";
+	sr[0].flags	= IORESOURCE_MEM;
+	sr[0].start	= pcmcia_attr_start;
+	sr[0].end	= pcmcia_attr_end;
+
+	sr[1].name	= "pcmcia-mem";
+	sr[1].flags	= IORESOURCE_MEM;
+	sr[1].start	= pcmcia_mem_start;
+	sr[1].end	= pcmcia_mem_end;
+
+	sr[2].name	= "pcmcia-io";
+	sr[2].flags	= IORESOURCE_MEM;
+	sr[2].start	= pcmcia_io_start;
+	sr[2].end	= pcmcia_io_end;
+
+	sr[3].name	= "insert";
+	sr[3].flags	= IORESOURCE_IRQ;
+	sr[3].start = sr[3].end = cd_irq;
+
+	sr[4].name	= "card";
+	sr[4].flags	= IORESOURCE_IRQ;
+	sr[4].start = sr[4].end = card_irq;
+
+	i = 5;
+	if (stschg_irq) {
+		sr[i].name	= "stschg";
+		sr[i].flags	= IORESOURCE_IRQ;
+		sr[i].start = sr[i].end = stschg_irq;
+		i++;
+	}
+	if (eject_irq) {
+		sr[i].name	= "eject";
+		sr[i].flags	= IORESOURCE_IRQ;
+		sr[i].start = sr[i].end = eject_irq;
+	}
+
+	pd->resource = sr;
+	pd->num_resources = cnt;
+
+	ret = platform_device_add(pd);
+	if (!ret)
+		return 0;
+
+	platform_device_put(pd);
+out:
+	kfree(sr);
+	return ret;
+}
+
+#define YAMON_SIZE	0x00100000
+#define YAMON_ENV_SIZE	0x00040000
+
+int __init db1x_register_norflash(unsigned long size, int width,
+				  int swapped)
+{
+	struct physmap_flash_data *pfd;
+	struct platform_device *pd;
+	struct mtd_partition *parts;
+	struct resource *res;
+	int ret, i;
+
+	if (size < (8 * 1024 * 1024))
+		return -EINVAL;
+
+	ret = -ENOMEM;
+	parts = kzalloc_objs(struct mtd_partition, 5);
+	if (!parts)
+		goto out;
+
+	res = kzalloc_obj(struct resource);
+	if (!res)
+		goto out1;
+
+	pfd = kzalloc_obj(struct physmap_flash_data);
+	if (!pfd)
+		goto out2;
+
+	pd = platform_device_alloc("physmap-flash", 0);
+	if (!pd)
+		goto out3;
+
+	/* NOR flash ends at 0x20000000, regardless of size */
+	res->start = 0x20000000 - size;
+	res->end = 0x20000000 - 1;
+	res->flags = IORESOURCE_MEM;
+
+	/* partition setup.  Most Develboards have a switch which allows
+	 * to swap the physical locations of the 2 NOR flash banks.
+	 */
+	i = 0;
+	if (!swapped) {
+		/* first NOR chip */
+		parts[i].offset = 0;
+		parts[i].name = "User FS";
+		parts[i].size = size / 2;
+		i++;
+	}
+
+	parts[i].offset = MTDPART_OFS_APPEND;
+	parts[i].name = "User FS 2";
+	parts[i].size = (size / 2) - (0x20000000 - 0x1fc00000);
+	i++;
+
+	parts[i].offset = MTDPART_OFS_APPEND;
+	parts[i].name = "YAMON";
+	parts[i].size = YAMON_SIZE;
+	parts[i].mask_flags = MTD_WRITEABLE;
+	i++;
+
+	parts[i].offset = MTDPART_OFS_APPEND;
+	parts[i].name = "raw kernel";
+	parts[i].size = 0x00400000 - YAMON_SIZE - YAMON_ENV_SIZE;
+	i++;
+
+	parts[i].offset = MTDPART_OFS_APPEND;
+	parts[i].name = "YAMON Env";
+	parts[i].size = YAMON_ENV_SIZE;
+	parts[i].mask_flags = MTD_WRITEABLE;
+	i++;
+
+	if (swapped) {
+		parts[i].offset = MTDPART_OFS_APPEND;
+		parts[i].name = "User FS";
+		parts[i].size = size / 2;
+		i++;
+	}
+
+	pfd->width = width;
+	pfd->parts = parts;
+	pfd->nr_parts = 5;
+
+	pd->dev.platform_data = pfd;
+	pd->resource = res;
+	pd->num_resources = 1;
+
+	ret = platform_device_add(pd);
+	if (!ret)
+		return ret;
+
+	platform_device_put(pd);
+out3:
+	kfree(pfd);
+out2:
+	kfree(res);
+out1:
+	kfree(parts);
+out:
+	return ret;
+}
diff --git a/arch/mips/alchemy/devboards/platform.h b/arch/mips/alchemy/devboards/platform.h
new file mode 100644
index 000000000..23d98fc09
--- /dev/null
+++ b/arch/mips/alchemy/devboards/platform.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _DEVBOARD_PLATFORM_H_
+#define _DEVBOARD_PLATFORM_H_
+
+#include <linux/init.h>
+
+int __init db1x_register_pcmcia_socket(phys_addr_t pcmcia_attr_start,
+				       phys_addr_t pcmcia_attr_len,
+				       phys_addr_t pcmcia_mem_start,
+				       phys_addr_t pcmcia_mem_end,
+				       phys_addr_t pcmcia_io_start,
+				       phys_addr_t pcmcia_io_end,
+				       int card_irq,
+				       int cd_irq,
+				       int stschg_irq,
+				       int eject_irq,
+				       int id);
+
+int __init db1x_register_norflash(unsigned long size, int width,
+				  int swapped);
+
+#endif
diff --git a/arch/mips/alchemy/devboards/pm.c b/arch/mips/alchemy/devboards/pm.c
new file mode 100644
index 000000000..b17a0d199
--- /dev/null
+++ b/arch/mips/alchemy/devboards/pm.c
@@ -0,0 +1,254 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Alchemy Development Board example suspend userspace interface.
+ *
+ * (c) 2008 Manuel Lauss <mano@roarinelk.homelinux.net>
+ */
+
+#include <linux/init.h>
+#include <linux/kobject.h>
+#include <linux/suspend.h>
+#include <linux/sysfs.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/gpio-au1000.h>
+#include <asm/mach-db1x00/bcsr.h>
+
+/*
+ * Generic suspend userspace interface for Alchemy development boards.
+ * This code exports a few sysfs nodes under /sys/power/db1x/ which
+ * can be used by userspace to en/disable all au1x-provided wakeup
+ * sources and configure the timeout after which the TOYMATCH2 irq
+ * is to trigger a wakeup.
+ */
+
+
+static unsigned long db1x_pm_sleep_secs;
+static unsigned long db1x_pm_wakemsk;
+static unsigned long db1x_pm_last_wakesrc;
+
+static int db1x_pm_enter(suspend_state_t state)
+{
+	unsigned short bcsrs[16];
+	int i, j, hasint;
+
+	/* save CPLD regs */
+	hasint = bcsr_read(BCSR_WHOAMI);
+	hasint = BCSR_WHOAMI_BOARD(hasint) >= BCSR_WHOAMI_DB1200;
+	j = (hasint) ? BCSR_MASKSET : BCSR_SYSTEM;
+
+	for (i = BCSR_STATUS; i <= j; i++)
+		bcsrs[i] = bcsr_read(i);
+
+	/* shut off hexleds */
+	bcsr_write(BCSR_HEXCLEAR, 3);
+
+	/* enable GPIO based wakeup */
+	alchemy_gpio1_input_enable();
+
+	/* clear and setup wake cause and source */
+	alchemy_wrsys(0, AU1000_SYS_WAKEMSK);
+	alchemy_wrsys(0, AU1000_SYS_WAKESRC);
+
+	alchemy_wrsys(db1x_pm_wakemsk, AU1000_SYS_WAKEMSK);
+
+	/* setup 1Hz-timer-based wakeup: wait for reg access */
+	while (alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_M20)
+		asm volatile ("nop");
+
+	alchemy_wrsys(alchemy_rdsys(AU1000_SYS_TOYREAD) + db1x_pm_sleep_secs,
+		      AU1000_SYS_TOYMATCH2);
+
+	/* wait for value to really hit the register */
+	while (alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_M20)
+		asm volatile ("nop");
+
+	/* ...and now the sandman can come! */
+	au_sleep();
+
+
+	/* restore CPLD regs */
+	for (i = BCSR_STATUS; i <= BCSR_SYSTEM; i++)
+		bcsr_write(i, bcsrs[i]);
+
+	/* restore CPLD int registers */
+	if (hasint) {
+		bcsr_write(BCSR_INTCLR, 0xffff);
+		bcsr_write(BCSR_MASKCLR, 0xffff);
+		bcsr_write(BCSR_INTSTAT, 0xffff);
+		bcsr_write(BCSR_INTSET, bcsrs[BCSR_INTSET]);
+		bcsr_write(BCSR_MASKSET, bcsrs[BCSR_MASKSET]);
+	}
+
+	/* light up hexleds */
+	bcsr_write(BCSR_HEXCLEAR, 0);
+
+	return 0;
+}
+
+static int db1x_pm_begin(suspend_state_t state)
+{
+	if (!db1x_pm_wakemsk) {
+		printk(KERN_ERR "db1x: no wakeup source activated!\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void db1x_pm_end(void)
+{
+	/* read and store wakeup source, the clear the register. To
+	 * be able to clear it, WAKEMSK must be cleared first.
+	 */
+	db1x_pm_last_wakesrc = alchemy_rdsys(AU1000_SYS_WAKESRC);
+
+	alchemy_wrsys(0, AU1000_SYS_WAKEMSK);
+	alchemy_wrsys(0, AU1000_SYS_WAKESRC);
+}
+
+static const struct platform_suspend_ops db1x_pm_ops = {
+	.valid		= suspend_valid_only_mem,
+	.begin		= db1x_pm_begin,
+	.enter		= db1x_pm_enter,
+	.end		= db1x_pm_end,
+};
+
+#define ATTRCMP(x) (0 == strcmp(attr->attr.name, #x))
+
+static ssize_t db1x_pmattr_show(struct kobject *kobj,
+				struct kobj_attribute *attr,
+				char *buf)
+{
+	int idx;
+
+	if (ATTRCMP(timer_timeout))
+		return sprintf(buf, "%lu\n", db1x_pm_sleep_secs);
+
+	else if (ATTRCMP(timer))
+		return sprintf(buf, "%u\n",
+				!!(db1x_pm_wakemsk & SYS_WAKEMSK_M2));
+
+	else if (ATTRCMP(wakesrc))
+		return sprintf(buf, "%lu\n", db1x_pm_last_wakesrc);
+
+	else if (ATTRCMP(gpio0) || ATTRCMP(gpio1) || ATTRCMP(gpio2) ||
+		 ATTRCMP(gpio3) || ATTRCMP(gpio4) || ATTRCMP(gpio5) ||
+		 ATTRCMP(gpio6) || ATTRCMP(gpio7)) {
+		idx = (attr->attr.name)[4] - '0';
+		return sprintf(buf, "%d\n",
+			!!(db1x_pm_wakemsk & SYS_WAKEMSK_GPIO(idx)));
+
+	} else if (ATTRCMP(wakemsk)) {
+		return sprintf(buf, "%08lx\n", db1x_pm_wakemsk);
+	}
+
+	return -ENOENT;
+}
+
+static ssize_t db1x_pmattr_store(struct kobject *kobj,
+				 struct kobj_attribute *attr,
+				 const char *instr,
+				 size_t bytes)
+{
+	unsigned long l;
+	int tmp;
+
+	if (ATTRCMP(timer_timeout)) {
+		tmp = kstrtoul(instr, 0, &l);
+		if (tmp)
+			return tmp;
+
+		db1x_pm_sleep_secs = l;
+
+	} else if (ATTRCMP(timer)) {
+		if (instr[0] != '0')
+			db1x_pm_wakemsk |= SYS_WAKEMSK_M2;
+		else
+			db1x_pm_wakemsk &= ~SYS_WAKEMSK_M2;
+
+	} else if (ATTRCMP(gpio0) || ATTRCMP(gpio1) || ATTRCMP(gpio2) ||
+		   ATTRCMP(gpio3) || ATTRCMP(gpio4) || ATTRCMP(gpio5) ||
+		   ATTRCMP(gpio6) || ATTRCMP(gpio7)) {
+		tmp = (attr->attr.name)[4] - '0';
+		if (instr[0] != '0') {
+			db1x_pm_wakemsk |= SYS_WAKEMSK_GPIO(tmp);
+		} else {
+			db1x_pm_wakemsk &= ~SYS_WAKEMSK_GPIO(tmp);
+		}
+
+	} else if (ATTRCMP(wakemsk)) {
+		tmp = kstrtoul(instr, 0, &l);
+		if (tmp)
+			return tmp;
+
+		db1x_pm_wakemsk = l & 0x0000003f;
+
+	} else
+		bytes = -ENOENT;
+
+	return bytes;
+}
+
+#define ATTR(x)							\
+	static struct kobj_attribute x##_attribute =		\
+		__ATTR(x, 0664, db1x_pmattr_show,		\
+				db1x_pmattr_store);
+
+ATTR(gpio0)		/* GPIO-based wakeup enable */
+ATTR(gpio1)
+ATTR(gpio2)
+ATTR(gpio3)
+ATTR(gpio4)
+ATTR(gpio5)
+ATTR(gpio6)
+ATTR(gpio7)
+ATTR(timer)		/* TOYMATCH2-based wakeup enable */
+ATTR(timer_timeout)	/* timer-based wakeup timeout value, in seconds */
+ATTR(wakesrc)		/* contents of SYS_WAKESRC after last wakeup */
+ATTR(wakemsk)		/* direct access to SYS_WAKEMSK */
+
+#define ATTR_LIST(x)	& x ## _attribute.attr
+static struct attribute *db1x_pmattrs[] = {
+	ATTR_LIST(gpio0),
+	ATTR_LIST(gpio1),
+	ATTR_LIST(gpio2),
+	ATTR_LIST(gpio3),
+	ATTR_LIST(gpio4),
+	ATTR_LIST(gpio5),
+	ATTR_LIST(gpio6),
+	ATTR_LIST(gpio7),
+	ATTR_LIST(timer),
+	ATTR_LIST(timer_timeout),
+	ATTR_LIST(wakesrc),
+	ATTR_LIST(wakemsk),
+	NULL,		/* terminator */
+};
+
+static struct attribute_group db1x_pmattr_group = {
+	.name	= "db1x",
+	.attrs	= db1x_pmattrs,
+};
+
+/*
+ * Initialize suspend interface
+ */
+static int __init pm_init(void)
+{
+	/* init TOY to tick at 1Hz if not already done. No need to wait
+	 * for confirmation since there's plenty of time from here to
+	 * the next suspend cycle.
+	 */
+	if (alchemy_rdsys(AU1000_SYS_TOYTRIM) != 32767)
+		alchemy_wrsys(32767, AU1000_SYS_TOYTRIM);
+
+	db1x_pm_last_wakesrc = alchemy_rdsys(AU1000_SYS_WAKESRC);
+
+	alchemy_wrsys(0, AU1000_SYS_WAKESRC);
+	alchemy_wrsys(0, AU1000_SYS_WAKEMSK);
+
+	suspend_set_ops(&db1x_pm_ops);
+
+	return sysfs_create_group(power_kobj, &db1x_pmattr_group);
+}
+
+late_initcall(pm_init);