diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/brya/variants/baseboard/gpio.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/mainboard/google/brya/variants/baseboard/gpio.c b/src/mainboard/google/brya/variants/baseboard/gpio.c index 4e8a303f14..b95ece1deb 100644 --- a/src/mainboard/google/brya/variants/baseboard/gpio.c +++ b/src/mainboard/google/brya/variants/baseboard/gpio.c @@ -120,7 +120,7 @@ static const struct pad_config gpio_table[] = { /* D0 : ISH_GP0 ==> PCH_FP_BOOT0 */ PAD_NC(GPP_D0, NONE), /* D1 : ISH_GP1 ==> FP_RST_ODL */ - PAD_CFG_GPO(GPP_D1, 0, DEEP), + PAD_CFG_GPO(GPP_D1, 1, DEEP), /* D2 : ISH_GP2 ==> EN_FP_PWR */ PAD_CFG_GPO(GPP_D2, 1, DEEP), /* D3 : ISH_GP3 ==> WCAM_RST_L */ @@ -373,6 +373,17 @@ static const struct pad_config early_gpio_table[] = { PAD_CFG_NF(GPP_B7, NONE, DEEP, NF2), /* B8 : ISH_12C1_SCL ==> PCH_I2C_TPM_SCL */ PAD_CFG_NF(GPP_B8, NONE, DEEP, NF2), + /* + * D1 : ISH_GP1 ==> FP_RST_ODL + * FP_RST_ODL comes out of reset as hi-z and does not have an external pull-down. + * To ensure proper power sequencing for the FPMCU device, reset signal is driven low + * early on in bootblock, followed by enabling of power. Reset signal is deasserted + * later on in ramstage. Since reset signal is asserted in bootblock, it results in + * FPMCU not working after a S3 resume. This is a known issue. + */ + PAD_CFG_GPO(GPP_D1, 0, DEEP), + /* D2 : ISH_GP2 ==> EN_FP_PWR */ + PAD_CFG_GPO(GPP_D2, 1, DEEP), /* E0 : SATAXPCIE0 ==> WWAN_PERST_L */ PAD_CFG_GPO(GPP_E0, 0, DEEP), /* E13 : THC0_SPI1_IO2 ==> MEM_CH_SEL */ |