From: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Date: Fri, 23 May 2014 20:53:58 +0000 (-0400)
Subject: ARM: keystone: remove redundant reset stuff
X-Git-Tag: firefly_0821_release~176^2~3781^2~2^2~2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b7ae8bf7bf3c9db304aa582e5c26fc74ae636998;p=firefly-linux-kernel-4.4.55.git

ARM: keystone: remove redundant reset stuff

Remove reset stuff in flavour of using keystone reset driver:
driver/power/reset/keystone-reset.c

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
---

diff --git a/arch/arm/mach-keystone/keystone.c b/arch/arm/mach-keystone/keystone.c
index 59b8383cbdb0..1f9ae89ee06d 100644
--- a/arch/arm/mach-keystone/keystone.c
+++ b/arch/arm/mach-keystone/keystone.c
@@ -26,11 +26,6 @@
 
 #include "keystone.h"
 
-#define PLL_RESET_WRITE_KEY_MASK		0xffff0000
-#define PLL_RESET_WRITE_KEY			0x5a69
-#define PLL_RESET				BIT(16)
-
-static void __iomem *keystone_rstctrl;
 static struct notifier_block platform_nb;
 static unsigned long keystone_dma_pfn_offset __read_mostly;
 
@@ -55,16 +50,6 @@ static int keystone_platform_notifier(struct notifier_block *nb,
 
 static void __init keystone_init(void)
 {
-	struct device_node *node;
-
-	node = of_find_compatible_node(NULL, NULL, "ti,keystone-reset");
-	if (WARN_ON(!node))
-		pr_warn("ti,keystone-reset node undefined\n");
-
-	keystone_rstctrl = of_iomap(node, 0);
-	if (WARN_ON(!keystone_rstctrl))
-		pr_warn("ti,keystone-reset iomap error\n");
-
 	keystone_pm_runtime_init();
 	if (platform_nb.notifier_call)
 		bus_register_notifier(&platform_bus_type, &platform_nb);
@@ -123,24 +108,6 @@ static const char *keystone_match[] __initconst = {
 	NULL,
 };
 
-void keystone_restart(enum reboot_mode mode, const char *cmd)
-{
-	u32 val;
-
-	BUG_ON(!keystone_rstctrl);
-
-	/* Enable write access to RSTCTRL */
-	val = readl(keystone_rstctrl);
-	val &= PLL_RESET_WRITE_KEY_MASK;
-	val |= PLL_RESET_WRITE_KEY;
-	writel(val, keystone_rstctrl);
-
-	/* Reset the SOC */
-	val = readl(keystone_rstctrl);
-	val &= ~PLL_RESET;
-	writel(val, keystone_rstctrl);
-}
-
 DT_MACHINE_START(KEYSTONE, "Keystone")
 #if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
 	.dma_zone_size	= SZ_2G,
@@ -148,6 +115,5 @@ DT_MACHINE_START(KEYSTONE, "Keystone")
 	.smp		= smp_ops(keystone_smp_ops),
 	.init_machine	= keystone_init,
 	.dt_compat	= keystone_match,
-	.restart	= keystone_restart,
 	.init_meminfo   = keystone_init_meminfo,
 MACHINE_END