diff options
Diffstat (limited to 'src/mainboard/google/gru/mainboard.c')
| -rw-r--r-- | src/mainboard/google/gru/mainboard.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/mainboard/google/gru/mainboard.c b/src/mainboard/google/gru/mainboard.c index 8359ca49dc..1812a2ab41 100644 --- a/src/mainboard/google/gru/mainboard.c +++ b/src/mainboard/google/gru/mainboard.c @@ -43,6 +43,49 @@ static void configure_emmc(void) rkclk_configure_emmc(); } +static void register_gpio_suspend(void) +{ + /* + * These three GPIO params are used to shut down the 1.5V, 1.8V and + * 3.3V power rails, which need to be shut down ordered by voltage, + * with highest voltage first. + * Since register_bl31() appends to the front of the list, we need to + * register them backwards, with 1.5V coming first. + */ + static struct bl31_gpio_param param_p15_en = { + .h = { + .type = PARAM_SUSPEND_GPIO, + }, + .gpio = { + .polarity = BL31_GPIO_LEVEL_LOW, + }, + }; + param_p15_en.gpio.index = GET_GPIO_NUM(GPIO_P15V_EN); + register_bl31_param(¶m_p15_en.h); + + static struct bl31_gpio_param param_p18_audio_en = { + .h = { + .type = PARAM_SUSPEND_GPIO, + }, + .gpio = { + .polarity = BL31_GPIO_LEVEL_LOW, + }, + }; + param_p18_audio_en.gpio.index = GET_GPIO_NUM(GPIO_P18V_AUDIO_PWREN); + register_bl31_param(¶m_p18_audio_en.h); + + static struct bl31_gpio_param param_p30_en = { + .h = { + .type = PARAM_SUSPEND_GPIO, + }, + .gpio = { + .polarity = BL31_GPIO_LEVEL_LOW, + }, + }; + param_p30_en.gpio.index = GET_GPIO_NUM(GPIO_P30V_EN); + register_bl31_param(¶m_p30_en.h); +} + static void register_reset_to_bl31(void) { static struct bl31_gpio_param param_reset = { @@ -184,6 +227,7 @@ static void mainboard_init(device_t dev) setup_usb(); register_reset_to_bl31(); register_poweroff_to_bl31(); + register_gpio_suspend(); } static void enable_backlight_booster(void) |