diff options
| -rw-r--r-- | power/sc7180.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/power/sc7180.c b/power/sc7180.c index 0d2412b095..d1e8aeee42 100644 --- a/power/sc7180.c +++ b/power/sc7180.c @@ -91,6 +91,14 @@ */ #define SYSTEM_POWER_ON_DELAY (110 * MSEC) +/* + * Delay between the PMIC power drop and power-off the system. + * Qualcomm measured the entire POFF duration is around 70ms. Setting + * this delay to 70ms is more than enough, as the PMIC power drop is in + * the middle of POFF duration. + */ +#define PMIC_POWER_OFF_DELAY (70 * MSEC) + /* TODO(crosbug.com/p/25047): move to HOOK_POWER_BUTTON_CHANGE */ /* 1 if the power button was pressed last time we checked */ static char power_button_was_pressed; @@ -468,6 +476,7 @@ static void power_off(void) /* Do a graceful way to shutdown PMIC/AP first */ set_pmic_pwron(0); + usleep(PMIC_POWER_OFF_DELAY); /* Disable signal interrupts, as they are floating when switchcap off */ power_signal_disable_interrupt(GPIO_AP_RST_L); |