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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/soc/gemini
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'drivers/soc/gemini')
-rw-r--r--drivers/soc/gemini/Makefile2
-rw-r--r--drivers/soc/gemini/soc-gemini.c71
2 files changed, 73 insertions, 0 deletions
diff --git a/drivers/soc/gemini/Makefile b/drivers/soc/gemini/Makefile
new file mode 100644
index 000000000..8cbd1e45d
--- /dev/null
+++ b/drivers/soc/gemini/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-y += soc-gemini.o
diff --git a/drivers/soc/gemini/soc-gemini.c b/drivers/soc/gemini/soc-gemini.c
new file mode 100644
index 000000000..642b96c91
--- /dev/null
+++ b/drivers/soc/gemini/soc-gemini.c
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2017 Linaro Ltd.
+ *
+ * Author: Linus Walleij <linus.walleij@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2, as
+ * published by the Free Software Foundation.
+ *
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+#include <linux/of.h>
+
+#define GLOBAL_WORD_ID 0x00
+#define GEMINI_GLOBAL_ARB1_CTRL 0x2c
+#define GEMINI_ARB1_BURST_MASK GENMASK(21, 16)
+#define GEMINI_ARB1_BURST_SHIFT 16
+/* These all define the priority on the BUS2 backplane */
+#define GEMINI_ARB1_PRIO_MASK GENMASK(9, 0)
+#define GEMINI_ARB1_DMAC_HIGH_PRIO BIT(0)
+#define GEMINI_ARB1_IDE_HIGH_PRIO BIT(1)
+#define GEMINI_ARB1_RAID_HIGH_PRIO BIT(2)
+#define GEMINI_ARB1_SECURITY_HIGH_PRIO BIT(3)
+#define GEMINI_ARB1_GMAC0_HIGH_PRIO BIT(4)
+#define GEMINI_ARB1_GMAC1_HIGH_PRIO BIT(5)
+#define GEMINI_ARB1_USB0_HIGH_PRIO BIT(6)
+#define GEMINI_ARB1_USB1_HIGH_PRIO BIT(7)
+#define GEMINI_ARB1_PCI_HIGH_PRIO BIT(8)
+#define GEMINI_ARB1_TVE_HIGH_PRIO BIT(9)
+
+#define GEMINI_DEFAULT_BURST_SIZE 0x20
+#define GEMINI_DEFAULT_PRIO (GEMINI_ARB1_GMAC0_HIGH_PRIO | \
+ GEMINI_ARB1_GMAC1_HIGH_PRIO)
+
+static int __init gemini_soc_init(void)
+{
+ struct regmap *map;
+ u32 rev;
+ u32 val;
+ int ret;
+
+ /* Multiplatform guard, only proceed on Gemini */
+ if (!of_machine_is_compatible("cortina,gemini"))
+ return 0;
+
+ map = syscon_regmap_lookup_by_compatible("cortina,gemini-syscon");
+ if (IS_ERR(map))
+ return PTR_ERR(map);
+ ret = regmap_read(map, GLOBAL_WORD_ID, &rev);
+ if (ret)
+ return ret;
+
+ val = (GEMINI_DEFAULT_BURST_SIZE << GEMINI_ARB1_BURST_SHIFT) |
+ GEMINI_DEFAULT_PRIO;
+
+ /* Set up system arbitration */
+ regmap_update_bits(map,
+ GEMINI_GLOBAL_ARB1_CTRL,
+ GEMINI_ARB1_BURST_MASK | GEMINI_ARB1_PRIO_MASK,
+ val);
+
+ pr_info("Gemini SoC %04x revision %02x, set arbitration %08x\n",
+ rev >> 8, rev & 0xff, val);
+
+ return 0;
+}
+subsys_initcall(gemini_soc_init);