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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /arch/powerpc/boot/ebony.c
downloadlinux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz
linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'arch/powerpc/boot/ebony.c')
-rw-r--r--arch/powerpc/boot/ebony.c88
1 files changed, 88 insertions, 0 deletions
diff --git a/arch/powerpc/boot/ebony.c b/arch/powerpc/boot/ebony.c
new file mode 100644
index 000000000..add2316d3
--- /dev/null
+++ b/arch/powerpc/boot/ebony.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2007 David Gibson, IBM Corporation.
+ *
+ * Based on earlier code:
+ * Copyright (C) Paul Mackerras 1997.
+ *
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003, 2004 Zultys Technologies
+ */
+#include <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "elf.h"
+#include "string.h"
+#include "stdio.h"
+#include "page.h"
+#include "ops.h"
+#include "reg.h"
+#include "io.h"
+#include "dcr.h"
+#include "4xx.h"
+#include "44x.h"
+
+static u8 *ebony_mac0, *ebony_mac1;
+
+#define EBONY_FPGA_PATH "/plb/opb/ebc/fpga"
+#define EBONY_FPGA_FLASH_SEL 0x01
+#define EBONY_SMALL_FLASH_PATH "/plb/opb/ebc/small-flash"
+
+static void ebony_flashsel_fixup(void)
+{
+ void *devp;
+ u32 reg[3] = {0x0, 0x0, 0x80000};
+ u8 *fpga;
+ u8 fpga_reg0 = 0x0;
+
+ devp = finddevice(EBONY_FPGA_PATH);
+ if (!devp)
+ fatal("Couldn't locate FPGA node %s\n\r", EBONY_FPGA_PATH);
+
+ if (getprop(devp, "virtual-reg", &fpga, sizeof(fpga)) != sizeof(fpga))
+ fatal("%s has missing or invalid virtual-reg property\n\r",
+ EBONY_FPGA_PATH);
+
+ fpga_reg0 = in_8(fpga);
+
+ devp = finddevice(EBONY_SMALL_FLASH_PATH);
+ if (!devp)
+ fatal("Couldn't locate small flash node %s\n\r",
+ EBONY_SMALL_FLASH_PATH);
+
+ if (getprop(devp, "reg", reg, sizeof(reg)) != sizeof(reg))
+ fatal("%s has reg property of unexpected size\n\r",
+ EBONY_SMALL_FLASH_PATH);
+
+ /* Invert address bit 14 (IBM-endian) if FLASH_SEL fpga bit is set */
+ if (fpga_reg0 & EBONY_FPGA_FLASH_SEL)
+ reg[1] ^= 0x80000;
+
+ setprop(devp, "reg", reg, sizeof(reg));
+}
+
+static void ebony_fixups(void)
+{
+ // FIXME: sysclk should be derived by reading the FPGA registers
+ unsigned long sysclk = 33000000;
+
+ ibm440gp_fixup_clocks(sysclk, 6 * 1843200);
+ ibm4xx_sdram_fixup_memsize();
+ dt_fixup_mac_address_by_alias("ethernet0", ebony_mac0);
+ dt_fixup_mac_address_by_alias("ethernet1", ebony_mac1);
+ ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
+ ebony_flashsel_fixup();
+}
+
+void ebony_init(void *mac0, void *mac1)
+{
+ platform_ops.fixups = ebony_fixups;
+ platform_ops.exit = ibm44x_dbcr_reset;
+ ebony_mac0 = mac0;
+ ebony_mac1 = mac1;
+ fdt_init(_dtb_start);
+ serial_console_init();
+}