1 files changed, 135 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-3.9/0155-reset-MIPS-ralink-add-core-device-reset-wrapper.patch b/target/linux/ramips/patches-3.9/0155-reset-MIPS-ralink-add-core-device-reset-wrapper.patch
new file mode 100644
index 0000000000..a22cfc8020
--- /dev/null
+++ b/target/linux/ramips/patches-3.9/0155-reset-MIPS-ralink-add-core-device-reset-wrapper.patch
@@ -0,0 +1,135 @@
+From 4bec674c9f3f0bc137cf5aa4d2cb01e9f8027b3d Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Wed, 8 May 2013 22:08:39 +0200
+Subject: [PATCH 155/164] reset: MIPS: ralink: add core/device reset wrapper
+
+Add a helper for reseting different devices ont he SoC.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ arch/mips/Kconfig        |    1 +
+ arch/mips/ralink/of.c    |   59 ++++++++++++++++++++++++++++++++++++++++++++++
+ arch/mips/ralink/reset.c |    1 +
+ 3 files changed, 61 insertions(+)
+
+diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
+index b237c50..cfc7153 100644
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -444,6 +444,7 @@ config RALINK
+ 	select HAVE_MACH_CLKDEV
+ 	select CLKDEV_LOOKUP
+ 	select ARCH_REQUIRE_GPIOLIB
++	select ARCH_HAS_RESET_CONTROLLER
+ 
+ config SGI_IP22
+ 	bool "SGI IP22 (Indy/Indigo2)"
+diff --git a/arch/mips/ralink/of.c b/arch/mips/ralink/of.c
+index 8efb02b..2faf478 100644
+--- a/arch/mips/ralink/of.c
++++ b/arch/mips/ralink/of.c
+@@ -14,16 +14,22 @@
+ #include <linux/sizes.h>
+ #include <linux/of_fdt.h>
+ #include <linux/kernel.h>
++#include <linux/module.h>
+ #include <linux/bootmem.h>
+ #include <linux/of_platform.h>
+ #include <linux/of_address.h>
++#include <linux/reset-controller.h>
+ 
+ #include <asm/reboot.h>
+ #include <asm/bootinfo.h>
+ #include <asm/addrspace.h>
+ 
++#include <asm/mach-ralink/ralink_regs.h>
++
+ #include "common.h"
+ 
++#define SYSC_REG_RESET_CTRL     0x034
++
+ __iomem void *rt_sysc_membase;
+ __iomem void *rt_memc_membase;
+ 
+@@ -96,6 +102,53 @@ void __init plat_mem_setup(void)
+ 				     soc_info.mem_size_max * SZ_1M);
+ }
+ 
++static int ralink_assert_device(struct reset_controller_dev *rcdev, unsigned long id)
++{
++	u32 val;
++
++	if (id < 8)
++		return -1;
++
++	val = rt_sysc_r32(SYSC_REG_RESET_CTRL);
++	val |= BIT(id);
++	rt_sysc_w32(val, SYSC_REG_RESET_CTRL);
++
++	return 0;
++}
++
++static int ralink_deassert_device(struct reset_controller_dev *rcdev, unsigned long id)
++{
++	u32 val;
++
++	if (id < 8)
++		return -1;
++
++	val = rt_sysc_r32(SYSC_REG_RESET_CTRL);
++	val &= ~BIT(id);
++	rt_sysc_w32(val, SYSC_REG_RESET_CTRL);
++
++	return 0;
++}
++
++static int ralink_reset_device(struct reset_controller_dev *rcdev, unsigned long id)
++{
++	ralink_assert_device(rcdev, id);
++	return ralink_deassert_device(rcdev, id);
++}
++
++static struct reset_control_ops reset_ops = {
++	.reset = ralink_reset_device,
++	.assert = ralink_assert_device,
++	.deassert = ralink_deassert_device,
++};
++
++static struct reset_controller_dev reset_dev = {
++	.ops			= &reset_ops,
++	.owner			= THIS_MODULE,
++	.nr_resets		= 32,
++	.of_reset_n_cells	= 1,
++};
++
+ static int __init plat_of_setup(void)
+ {
+ 	static struct of_device_id of_ids[3];
+@@ -110,6 +163,12 @@ static int __init plat_of_setup(void)
+ 	if (of_platform_populate(NULL, of_ids, NULL, NULL))
+ 		panic("failed to populate DT\n");
+ 
++	reset_dev.of_node = of_find_compatible_node(NULL, NULL, "ralink,rt2880-reset");
++	if (!reset_dev.of_node)
++		panic("Failed to find reset controller node");
++
++	reset_controller_register(&reset_dev);
++
+ 	ralink_pinmux();
+ 
+ 	return 0;
+diff --git a/arch/mips/ralink/reset.c b/arch/mips/ralink/reset.c
+index 22120e5..6c15f4f 100644
+--- a/arch/mips/ralink/reset.c
++++ b/arch/mips/ralink/reset.c
+@@ -10,6 +10,7 @@
+ 
+ #include <linux/pm.h>
+ #include <linux/io.h>
++#include <linux/module.h>
+ 
+ #include <asm/reboot.h>
+ 
+-- 
+1.7.10.4
+