diff mbox

ARM: EXYNOS: fix software reset logic for EXYNOS5440 SOC

Message ID 003001ce57af$435c0340$ca1409c0$%lee@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

??? May 23, 2013, 12:15 p.m. UTC
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>
---
 arch/arm/mach-exynos/common.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

 		return;

Comments

Kim Kukjin May 24, 2013, 9:42 p.m. UTC | #1
On 05/23/13 21:15, ??? wrote:
> 
> 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>
> ---
>   arch/arm/mach-exynos/common.c |    6 +++++-
>   1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
> index 7f431dd..a22615d 100644
> --- a/arch/arm/mach-exynos/common.c
> +++ b/arch/arm/mach-exynos/common.c
> @@ -317,9 +317,13 @@ 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");

line wrapped?

> +		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;

Looks good to me, applied after fixing line wrapped.

Thanks.

- Kukjin
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diff mbox

Patch

diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 7f431dd..a22615d 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -317,9 +317,13 @@  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__);