diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/gru/bootblock.c | 18 | ||||
| -rw-r--r-- | src/mainboard/google/gru/mainboard.c | 9 |
2 files changed, 6 insertions, 21 deletions
diff --git a/src/mainboard/google/gru/bootblock.c b/src/mainboard/google/gru/bootblock.c index a18a61c101..0013414bf5 100644 --- a/src/mainboard/google/gru/bootblock.c +++ b/src/mainboard/google/gru/bootblock.c @@ -31,20 +31,10 @@ void bootblock_mainboard_early_init(void) { - /* Let gpio2ab io domains works at 1.8V. - * - * If io_vsel[0] == 0(default value), gpio2ab io domains is 3.0V - * powerd by APIO2_VDD, otherwise, 1.8V supplied by APIO2_VDDPST. - * But from the schematic of kevin rev0, the APIO2_VDD and - * APIO2_VDDPST both are 1.8V(intentionally?). - * - * So, by default, CPU1_SDIO_PWREN(GPIO2_A2) can't output 3.0V - * because the supply is 1.8V. - * Let ask GPIO2_A2 output 1.8V to make GPIO interal logic happy. - */ - write32(&rk3399_grf->io_vsel, RK_SETBITS(1 << 0)); - - /* Scarlet-based gpio4cd iodomain is 1.8V */ + /* Configure all programmable IO voltage domains (3D/4A and 2A/2B) early + so that we know we can use our GPIOs reliably in following code. */ + write32(&rk3399_grf->io_vsel, RK_SETBITS(1 << 1 | 1 << 0)); + /* On Scarlet-based boards, the 4C/4D domain is 1.8V (on others 3.0V) */ if (IS_ENABLED(CONFIG_GRU_BASEBOARD_SCARLET)) write32(&rk3399_grf->io_vsel, RK_SETBITS(1 << 3)); diff --git a/src/mainboard/google/gru/mainboard.c b/src/mainboard/google/gru/mainboard.c index 9a241f59ad..1a24862184 100644 --- a/src/mainboard/google/gru/mainboard.c +++ b/src/mainboard/google/gru/mainboard.c @@ -218,18 +218,13 @@ static void configure_codec(void) gpio_input(GPIO(3, D, 1)); /* I2S0_RX remove pull-up */ gpio_input(GPIO(3, D, 2)); /* I2S0_TX remove pull-up */ gpio_input(GPIO(3, D, 3)); /* I2S0_SDI0 remove pull-up */ - gpio_input(GPIO(3, D, 4)); /* I2S0_SDI1 remove pull-up */ - /* GPIO3_D5 (I2S0_SDI2SDO2) not connected */ - gpio_input(GPIO(3, D, 6)); /* I2S0_SDO1 remove pull-up */ + /* GPIOs 3_D4 - 3_D6 not used for I2S and are SKU ID pins on Scarlet. */ gpio_input(GPIO(3, D, 7)); /* I2S0_SDO0 remove pull-up */ gpio_input(GPIO(4, A, 0)); /* I2S0_MCLK remove pull-up */ - write32(&rk3399_grf->iomux_i2s0, IOMUX_I2S0); + write32(&rk3399_grf->iomux_i2s0, IOMUX_I2S0_SD0); write32(&rk3399_grf->iomux_i2sclk, IOMUX_I2SCLK); - /* AUDIO IO domain 1.8V voltage selection */ - write32(&rk3399_grf->io_vsel, RK_SETBITS(1 << 1)); - if (!IS_ENABLED(CONFIG_GRU_BASEBOARD_SCARLET)) gpio_output(GPIO_P18V_AUDIO_PWREN, 1); gpio_output(GPIO_SPK_PA_EN, 0); |