diff options
Diffstat (limited to 'target/linux/gemini/patches-4.14/0020-soc-Add-SoC-driver-for-Gemini.patch')
| -rw-r--r-- | target/linux/gemini/patches-4.14/0020-soc-Add-SoC-driver-for-Gemini.patch | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/target/linux/gemini/patches-4.14/0020-soc-Add-SoC-driver-for-Gemini.patch b/target/linux/gemini/patches-4.14/0020-soc-Add-SoC-driver-for-Gemini.patch deleted file mode 100644 index f1bbe0a15f..0000000000 --- a/target/linux/gemini/patches-4.14/0020-soc-Add-SoC-driver-for-Gemini.patch +++ /dev/null @@ -1,113 +0,0 @@ -From b0a88a861b036124ef2d6acfe6dd87cfde63e750 Mon Sep 17 00:00:00 2001 -From: Linus Walleij <linus.walleij@linaro.org> -Date: Fri, 22 Dec 2017 00:19:08 +0100 -Subject: [PATCH 20/31] soc: Add SoC driver for Gemini - -This adds an SoC driver for the Gemini. Currently there -is only one thing not fitting into any other framework, -and that is the bus arbitration setting. - -All Gemini vendor trees seem to be setting this register to -exactly the same arbitration so we just add a small code -snippet to do this at subsys_init() time before any other -drivers kick in. - -Signed-off-by: Linus Walleij <linus.walleij@linaro.org> -Signed-off-by: Arnd Bergmann <arnd@arndb.de> ---- - drivers/soc/Makefile | 1 + - drivers/soc/gemini/Makefile | 2 ++ - drivers/soc/gemini/soc-gemini.c | 71 +++++++++++++++++++++++++++++++++++++++++ - 3 files changed, 74 insertions(+) - create mode 100644 drivers/soc/gemini/Makefile - create mode 100644 drivers/soc/gemini/soc-gemini.c - ---- a/drivers/soc/Makefile -+++ b/drivers/soc/Makefile -@@ -9,6 +9,7 @@ obj-y += bcm/ - obj-$(CONFIG_ARCH_DOVE) += dove/ - obj-$(CONFIG_MACH_DOVE) += dove/ - obj-y += fsl/ -+obj-$(CONFIG_ARCH_GEMINI) += gemini/ - obj-$(CONFIG_ARCH_MXC) += imx/ - obj-$(CONFIG_SOC_XWAY) += lantiq/ - obj-$(CONFIG_ARCH_MEDIATEK) += mediatek/ ---- /dev/null -+++ b/drivers/soc/gemini/Makefile -@@ -0,0 +1,2 @@ -+# SPDX-License-Identifier: GPL-2.0 -+obj-y += soc-gemini.o ---- /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); |