linux-kernel - [Patch v3 3/5] ARM: keystone: remove redundant reset stuff

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Date:	Mon, 19 May 2014 13:25:53 +0300
From:	Ivan Khoronzhuk <ivan.khoronzhuk@...com>
To:	<dbaryshkov@...il.com>, <dwmw2@...radead.org>,
	<santosh.shilimkar@...com>, <robh+dt@...nel.org>,
	<pawel.moll@....com>, <mark.rutland@....com>,
	<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
	<grant.likely@...aro.org>
CC:	<arnd@...db.de>, <rdunlap@...radead.org>, <linux@....linux.org.uk>,
	<grygorii.strashko@...com>, <olof@...om.net>, <w-kwok2@...com>,
	<sboyd@...eaurora.org>, <devicetree@...r.kernel.org>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Ivan Khoronzhuk <ivan.khoronzhuk@...com>
Subject: [Patch v3 3/5] ARM: keystone: remove redundant reset stuff

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

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@...com>
---
 arch/arm/mach-keystone/keystone.c | 35 -----------------------------------
 1 file changed, 35 deletions(-)

diff --git a/arch/arm/mach-keystone/keystone.c b/arch/arm/mach-keystone/keystone.c
index e0b9e1b..c96e2a4 100644
--- a/arch/arm/mach-keystone/keystone.c
+++ b/arch/arm/mach-keystone/keystone.c
@@ -23,24 +23,8 @@
 
 #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 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();
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 }
@@ -50,24 +34,6 @@ 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,
@@ -75,5 +41,4 @@ DT_MACHINE_START(KEYSTONE, "Keystone")
 	.smp		= smp_ops(keystone_smp_ops),
 	.init_machine	= keystone_init,
 	.dt_compat	= keystone_match,
-	.restart	= keystone_restart,
 MACHINE_END
-- 
1.8.3.2

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