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| author | Rajeshwari Shinde <rajeshwari.s@samsung.com> | 2013-02-12 20:40:01 +0000 |
|---|---|---|
| committer | Minkyu Kang <mk7.kang@samsung.com> | 2013-02-20 16:48:17 +0900 |
| commit | 51ff1eda6f788fc76666d275a87a7c7aff32baa8 (patch) | |
| tree | 2bb0c802ac293e98543f1f74c88f0da40099b247 /arch/arm | |
| parent | 9f024f62e4604274a23213dcee30016092e32e7b (diff) | |
| download | u-boot-imx-51ff1eda6f788fc76666d275a87a7c7aff32baa8.zip u-boot-imx-51ff1eda6f788fc76666d275a87a7c7aff32baa8.tar.gz u-boot-imx-51ff1eda6f788fc76666d275a87a7c7aff32baa8.tar.bz2 | |
EXYNOS5: Add function to setup set ps hold
This patch adds a function to set ps_hold data driving value high.
This enables the machine to stay powered on even after the initial
power-on condition goes away(e.g. power button).
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/exynos/power.c | 16 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-exynos/power.h | 9 |
2 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c index d4bce6d..400c8bc 100644 --- a/arch/arm/cpu/armv7/exynos/power.c +++ b/arch/arm/cpu/armv7/exynos/power.c @@ -95,3 +95,19 @@ void set_dp_phy_ctrl(unsigned int enable) if (cpu_is_exynos5()) exynos5_dp_phy_control(enable); } + +static void exynos5_set_ps_hold_ctrl(void) +{ + struct exynos5_power *power = + (struct exynos5_power *)samsung_get_base_power(); + + /* Set PS-Hold high */ + setbits_le32(&power->ps_hold_control, + EXYNOS_PS_HOLD_CONTROL_DATA_HIGH); +} + +void set_ps_hold_ctrl(void) +{ + if (cpu_is_exynos5()) + exynos5_set_ps_hold_ctrl(); +} diff --git a/arch/arm/include/asm/arch-exynos/power.h b/arch/arm/include/asm/arch-exynos/power.h index d2fdb59..f2f73fa 100644 --- a/arch/arm/include/asm/arch-exynos/power.h +++ b/arch/arm/include/asm/arch-exynos/power.h @@ -864,4 +864,13 @@ void set_dp_phy_ctrl(unsigned int enable); #define EXYNOS_DP_PHY_ENABLE (1 << 0) +#define EXYNOS_PS_HOLD_CONTROL_DATA_HIGH (1 << 8) + +/* + * Set ps_hold data driving value high + * This enables the machine to stay powered on + * after the initial power-on condition goes away + * (e.g. power button). + */ +void set_ps_hold_ctrl(void); #endif |