diff options
| -rw-r--r-- | board/poppy/board.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/board/poppy/board.c b/board/poppy/board.c index 1b909fde89..412944dd0c 100644 --- a/board/poppy/board.c +++ b/board/poppy/board.c @@ -930,6 +930,33 @@ static void board_chipset_suspend(void) } DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT); +static void board_chipset_startup(void) +{ + /* + * Enable V5A in deep sleep state: + * VREN (bit 0) : EC_DS4 enable + * - Enables V5A voltage regulator in deep Sx states + * V5ADS3CNT (bits 1:0) : AUTO + * - Control to the VR (0 = off, 1 = PFM, 2 = AUTO, 3 = Forced PWM) + */ + i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992, 0x41, 0x01); + i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992, 0x2a, 0x02); +} +DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup, HOOK_PRIO_DEFAULT); + +static void board_chipset_shutdown(void) +{ + /* + * V5A VREN needs to be reset when chipset is shutdown. This is required + * because VREN keeps the V5A powered in all deep Sx states including + * deep S5. There is no need to power this rail in deep S5 as wake from + * base is not required. + */ + i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992, 0x41, 0x0); + i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992, 0x2a, 0x0); +} +DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown, HOOK_PRIO_DEFAULT); + int board_has_working_reset_flags(void) { int version = system_get_board_version(); |