diff options
Diffstat (limited to 'power/mt8183.c')
| -rw-r--r-- | power/mt8183.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/power/mt8183.c b/power/mt8183.c index 1aea2535cf..48886a488c 100644 --- a/power/mt8183.c +++ b/power/mt8183.c @@ -46,6 +46,12 @@ /* Maximum time it should for PMIC to turn on after toggling PMIC_EN_ODL. */ #define PMIC_EN_TIMEOUT (300 * MSEC) +/* + * Amount of time we need to hold PMIC_FORCE_RESET_ODL to ensure PMIC is really + * off and will not restart on its own. + */ +#define PMIC_FORCE_RESET_TIME (10 * SECOND) + /* Data structure for a GPIO operation for power sequencing */ struct power_seq_op { /* enum gpio_signal in 8 bits */ @@ -146,6 +152,17 @@ enum power_state power_chipset_init(void) return POWER_G3; } +/* + * If we have to force reset the PMIC, we only need to do so for a few seconds, + * then we need to release the GPIO to prevent leakage in G3. + */ +static void release_pmic_force_reset(void) +{ + CPRINTS("Releasing PMIC force reset"); + gpio_set_level(GPIO_PMIC_FORCE_RESET_ODL, 1); +} +DECLARE_DEFERRED(release_pmic_force_reset); + /** * Step through the power sequence table and do corresponding GPIO operations. * @@ -211,6 +228,7 @@ enum power_state power_handle_state(enum power_state state) case POWER_G3S5: forcing_shutdown = 0; + hook_call_deferred(&release_pmic_force_reset_data, -1); gpio_set_level(GPIO_PMIC_FORCE_RESET_ODL, 1); /* Power up to next state */ @@ -332,6 +350,8 @@ enum power_state power_handle_state(enum power_state state) CPRINTS("Forcing PMIC off"); gpio_set_level(GPIO_PMIC_FORCE_RESET_ODL, 0); msleep(5); + hook_call_deferred(&release_pmic_force_reset_data, + PMIC_FORCE_RESET_TIME); return POWER_S5G3; #endif |