diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/exynos/lowlevel_init.c | 6 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/exynos/power.c | 6 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-exynos/power.h | 1 |
3 files changed, 12 insertions, 1 deletions
diff --git a/arch/arm/cpu/armv7/exynos/lowlevel_init.c b/arch/arm/cpu/armv7/exynos/lowlevel_init.c index 48b5511c42..dcc270ffe4 100644 --- a/arch/arm/cpu/armv7/exynos/lowlevel_init.c +++ b/arch/arm/cpu/armv7/exynos/lowlevel_init.c @@ -39,6 +39,7 @@ enum { DO_CLOCKS = 1 << 1, DO_MEM_RESET = 1 << 2, DO_UART = 1 << 3, + DO_POWER = 1 << 4, }; int do_lowlevel_init(void) @@ -62,9 +63,12 @@ int do_lowlevel_init(void) break; default: /* This is a normal boot (not a wake from sleep) */ - actions = DO_CLOCKS | DO_MEM_RESET; + actions = DO_CLOCKS | DO_MEM_RESET | DO_POWER; } + if (actions & DO_POWER) + set_ps_hold_ctrl(); + if (actions & DO_CLOCKS) { system_clock_init(); mem_ctrl_init(actions & DO_MEM_RESET); diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c index 563abd750f..638ee0b30b 100644 --- a/arch/arm/cpu/armv7/exynos/power.c +++ b/arch/arm/cpu/armv7/exynos/power.c @@ -112,6 +112,12 @@ static void exynos5_set_ps_hold_ctrl(void) EXYNOS_PS_HOLD_CONTROL_DATA_HIGH); } +/* + * 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) { if (cpu_is_exynos5()) diff --git a/arch/arm/include/asm/arch-exynos/power.h b/arch/arm/include/asm/arch-exynos/power.h index c9609a23f5..a4b41adca9 100644 --- a/arch/arm/include/asm/arch-exynos/power.h +++ b/arch/arm/include/asm/arch-exynos/power.h @@ -1726,4 +1726,5 @@ uint32_t get_reset_status(void); /* Read the resume function and call it */ void power_exit_wakeup(void); + #endif |