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rockchip: gru: pass the gpio power supply enable pin to bl31

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we need to disable some regulator when device into suspend,
it mean we need to pass some gpio to bl31, and disable these
gpios when bl31 run suspend function.

BRANCH=None
BUG=chrome-os-partner:56423
TEST=enter suspend, measure suspend gpio go to low

Change-Id: I03d0407e0ef035823519a997534dcfea078a7ccd
Signed-off-by: Lin Huang <hl@rock-chips.com>
Reviewed-on: https://chromium-review.googlesource.com/374046
Commit-Ready: Caesar Wang <wxt@rock-chips.com>
Tested-by: Caesar Wang <wxt@rock-chips.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
Lin Huang 2016-08-22 17:35:40 -07:00 • committed by chrome-bot
commit 0f3332ef21
2 changed files with 46 additions and 0 deletions
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3
src/mainboard/google/gru/board.h
View file

@ -25,6 +25,9 @@
#define GPIO_POWEROFF GPIO(1, A, 6)
#define GPIO_RESET GPIO(0, B, 3)
#define GPIO_WP GPIO(1, C, 2)
#define GPIO_P15V_EN GPIO(0, B, 2)
#define GPIO_P30V_EN GPIO(0, B, 4)
#define GPIO_P18V_AUDIO_PWREN GPIO(0, A, 2)
void setup_chromeos_gpios(void);

43
src/mainboard/google/gru/mainboard.c
View file

@ -43,6 +43,48 @@ static void configure_emmc(void)
rkclk_configure_emmc();
}
static void register_gpio_suspend(void)
{
/*
* these 3 pin to disable gpio2 ~ gpio4 1.5v, 1.8v, 3.3v power supply
* so need to shut down the power supply from high voltage to
* low voltage, and consider register_bl31() appends to the front off
* the list, we should register 1.5v enable pin to 3.3v enable pin
*/
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(&param_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(&param_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(&param_p30_en.h);
}
static void register_reset_to_bl31(void)
{
static struct bl31_gpio_param param_reset = {
@ -184,6 +226,7 @@ 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)