diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/snow/mainboard.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/mainboard/google/snow/mainboard.c b/src/mainboard/google/snow/mainboard.c index 250b71fdee..2dd56fc17b 100644 --- a/src/mainboard/google/snow/mainboard.c +++ b/src/mainboard/google/snow/mainboard.c @@ -176,6 +176,32 @@ static void disable_usb30_pll(void) gpio_direction_output(usb3_pll_l, 0); } +static void gpio_init(void) +{ + /* Set up the I2C busses. */ + exynos_pinmux_config(PERIPH_ID_I2C0, PINMUX_FLAG_NONE); + exynos_pinmux_config(PERIPH_ID_I2C1, PINMUX_FLAG_NONE); + exynos_pinmux_config(PERIPH_ID_I2C2, PINMUX_FLAG_NONE); + exynos_pinmux_config(PERIPH_ID_I2C3, PINMUX_FLAG_NONE); + exynos_pinmux_config(PERIPH_ID_I2C4, PINMUX_FLAG_NONE); + exynos_pinmux_config(PERIPH_ID_I2C7, PINMUX_FLAG_NONE); + + /* Set up the GPIOs used to arbitrate for I2C bus 4. */ + gpio_set_pull(GPIO_F03, GPIO_PULL_NONE); + gpio_set_pull(GPIO_E04, GPIO_PULL_NONE); + gpio_direction_output(GPIO_F03, 1); + gpio_direction_input(GPIO_E04); + + /* Set up the GPIO used to enable the audio codec. */ + gpio_set_pull(GPIO_X17, GPIO_PULL_NONE); + gpio_set_pull(GPIO_X15, GPIO_PULL_NONE); + gpio_direction_output(GPIO_X17, 1); + gpio_direction_output(GPIO_X15, 1); + + /* Set up the I2S busses. */ + exynos_pinmux_config(PERIPH_ID_I2S1, PINMUX_FLAG_NONE); +} + /* this happens after cpu_init where exynos resources are set */ static void mainboard_init(device_t dev) { @@ -186,6 +212,8 @@ static void mainboard_init(device_t dev) }; void *fb_addr; + gpio_init(); + i2c_init(TPS69050_BUS, I2C_0_SPEED, I2C_SLAVE); i2c_init(7, I2C_0_SPEED, I2C_SLAVE); |