From 1ba830c9997214a7fbe4d91cf238793764620e3b Mon Sep 17 00:00:00 2001
From: Jungseok Lee <jays.lee@samsung.com>
Date: Sat, 25 May 2013 06:33:03 +0900
Subject: ARM: EXYNOS: fix software reset logic for EXYNOS5440 SOC
This patch fixes software reset logic. Software reset applies only to
powered-on domains in SOC because software reset to all domains causes
reboot failure.
Signed-off-by: Jungseok Lee <jays.lee@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
---
arch/arm/mach-exynos/common.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
(limited to 'arch/arm/mach-exynos')
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index a2d20120e9fc..027c9e7f0d13 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -326,9 +326,16 @@ void exynos5_restart(char mode, const char *cmd)
val = 0x1;
addr = EXYNOS_SWRESET;
} else if (of_machine_is_compatible("samsung,exynos5440")) {
+ u32 status;
np = of_find_compatible_node(NULL, NULL, "samsung,exynos5440-clock");
+
+ addr = of_iomap(np, 0) + 0xbc;
+ status = __raw_readl(addr);
+
addr = of_iomap(np, 0) + 0xcc;
- val = (0xfff << 20) | (0x1 << 16);
+ val = __raw_readl(addr);
+
+ val = (val & 0xffff0000) | (status & 0xffff);
} else {
pr_err("%s: cannot support non-DT\n", __func__);
return;
--
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