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| author | Jungseok Lee <jays.lee@samsung.com> | 2013-05-25 06:33:03 +0900 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2013-05-25 06:43:00 +0900 |
| commit | 1ba830c9997214a7fbe4d91cf238793764620e3b (patch) | |
| tree | bdbf02b288a11213496dfd9afeb0e73e230cbaa9 /arch/arm | |
| parent | 68a433f18c0574b50c5952978ca95b0db7347174 (diff) | |
| download | linux-1ba830c9997214a7fbe4d91cf238793764620e3b.tar.gz linux-1ba830c9997214a7fbe4d91cf238793764620e3b.tar.bz2 linux-1ba830c9997214a7fbe4d91cf238793764620e3b.zip | |
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>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-exynos/common.c | 9 |
1 files changed, 8 insertions, 1 deletions
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; |