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mb/google/asurada: Support audio 

- Turns audio-related things power on.
- Selects I2S pin-muxing.
- Exposes GPIO "speaker enable" for switching on and off.

BUG=b:176856418

Signed-off-by: Tzung-Bi Shih <tzungbi@chromium.org>
Change-Id: If595657bbddad85bc9a154b3648bae1190cb00b5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49135
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
This commit is contained in:
Tzung-Bi Shih 2021-01-05 17:57:04 +08:00 committed by Patrick Georgi
parent 3436bb03f6
commit 3f80a7aa6d
3 changed files with 17 additions and 0 deletions
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2
src/mainboard/google/asurada/chromeos.c
View File

@ -15,6 +15,7 @@ void setup_chromeos_gpios(void)
gpio_input_pullup(GPIO_H1_AP_INT);
gpio_input_pullup(GPIO_SD_CD);
gpio_output(GPIO_RESET, 0);
gpio_output(GPIO_EN_SPK_AMP, 0);
}
void fill_lb_gpios(struct lb_gpios *gpios)
@ -24,6 +25,7 @@ void fill_lb_gpios(struct lb_gpios *gpios)
{GPIO_EC_AP_INT.id, ACTIVE_LOW, -1, "EC interrupt"},
{GPIO_H1_AP_INT.id, ACTIVE_HIGH, -1, "TPM interrupt"},
{GPIO_SD_CD.id, ACTIVE_HIGH, -1, "SD card detect"},
{GPIO_EN_SPK_AMP.id, ACTIVE_HIGH, -1, "speaker enable"},
};
lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
}

2
src/mainboard/google/asurada/gpio.h
View File

@ -14,6 +14,8 @@
#define GPIO_SD_CD GPIO(EINT17)
/* AP_EC_WARM_RST_REQ */
#define GPIO_RESET GPIO(CAM_PDN2)
/* EN_SPK */
#define GPIO_EN_SPK_AMP GPIO(CAM_PDN1)
void setup_chromeos_gpios(void);

13
src/mainboard/google/asurada/mainboard.c
View File

@ -193,10 +193,23 @@ static void configure_sdcard(void)
mainboard_enable_regulator(MTK_REGULATOR_VCCQ, enable);
}
static void configure_audio(void)
{
/* Audio PWR */
mtcmos_audio_power_on();
/* SoC I2S */
gpio_set_mode(GPIO(I2S3_MCK), PAD_I2S3_MCK_FUNC_I2S3_MCK);
gpio_set_mode(GPIO(I2S3_BCK), PAD_I2S3_BCK_FUNC_I2S3_BCK);
gpio_set_mode(GPIO(I2S3_LRCK), PAD_I2S3_LRCK_FUNC_I2S3_LRCK);
gpio_set_mode(GPIO(I2S3_DO), PAD_I2S3_DO_FUNC_I2S3_DO);
}
static void mainboard_init(struct device *dev)
{
configure_emmc();
configure_sdcard();
configure_audio();
setup_usb_host();
register_reset_to_bl31();