diff options
Diffstat (limited to 'src/mainboard/google/volteer/variants/elemi')
| -rw-r--r-- | src/mainboard/google/volteer/variants/elemi/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/mainboard/google/volteer/variants/elemi/gpio.c | 21 | ||||
| -rw-r--r-- | src/mainboard/google/volteer/variants/elemi/ramstage.c | 20 |
3 files changed, 38 insertions, 4 deletions
diff --git a/src/mainboard/google/volteer/variants/elemi/Makefile.inc b/src/mainboard/google/volteer/variants/elemi/Makefile.inc index b0bfc567ff..3488dc6cc2 100644 --- a/src/mainboard/google/volteer/variants/elemi/Makefile.inc +++ b/src/mainboard/google/volteer/variants/elemi/Makefile.inc @@ -5,3 +5,4 @@ bootblock-y += gpio.c romstage-y += memory.c ramstage-y += gpio.c +ramstage-y += ramstage.c diff --git a/src/mainboard/google/volteer/variants/elemi/gpio.c b/src/mainboard/google/volteer/variants/elemi/gpio.c index bbdb517bb1..061aaec3bb 100644 --- a/src/mainboard/google/volteer/variants/elemi/gpio.c +++ b/src/mainboard/google/volteer/variants/elemi/gpio.c @@ -1,5 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0-or-later */ +#include <acpi/acpi.h> #include <baseboard/gpio.h> #include <baseboard/variants.h> #include <commonlib/helpers.h> @@ -18,8 +19,6 @@ static const struct pad_config override_gpio_table[] = { PAD_CFG_NF(GPP_A16, NONE, DEEP, NF1), /* A18 : DDSP_HPDB ==> HDMI_HPD */ PAD_CFG_NF(GPP_A18, NONE, DEEP, NF1), - /* A21 : DDPC_CTRCLK ==> EN_FP_PWR */ - PAD_CFG_GPO(GPP_A21, 1, DEEP), /* A22 : DDPC_CTRLDATA ==> EN_HDMI_PWR */ PAD_CFG_GPO(GPP_A22, 1, DEEP), /* A23 : I2S1_SCLK ==> I2S1_SPKR_SCLK */ @@ -71,8 +70,6 @@ static const struct pad_config override_gpio_table[] = { PAD_CFG_GPI_INT(GPP_C20, NONE, PLTRST, LEVEL), /* C22 : UART2_RTS# ==> PCH_FPMCU_BOOT0 */ PAD_CFG_GPO(GPP_C22, 0, DEEP), - /* C23 : UART2_CTS# ==> FPMCU_RST_ODL */ - PAD_CFG_GPO(GPP_C23, 1, DEEP), /* D6 : SRCCLKREQ1# ==> WLAN_CLKREQ_ODL */ PAD_CFG_NF(GPP_D6, NONE, DEEP, NF1), @@ -232,3 +229,19 @@ const struct pad_config *variant_early_gpio_table(size_t *num) *num = ARRAY_SIZE(early_gpio_table); return early_gpio_table; } + +/* GPIO settings before entering S5 */ +static const struct pad_config s5_sleep_gpio_table[] = { + PAD_CFG_GPO(GPP_C23, 0, DEEP), /* FPMCU_RST_ODL */ + PAD_CFG_GPO(GPP_A21, 0, DEEP), /* EN_FP_PWR */ +}; + +const struct pad_config *variant_sleep_gpio_table(u8 slp_typ, size_t *num) +{ + if (slp_typ == ACPI_S5) { + *num = ARRAY_SIZE(s5_sleep_gpio_table); + return s5_sleep_gpio_table; + } + *num = 0; + return NULL; +} diff --git a/src/mainboard/google/volteer/variants/elemi/ramstage.c b/src/mainboard/google/volteer/variants/elemi/ramstage.c new file mode 100644 index 0000000000..b198992824 --- /dev/null +++ b/src/mainboard/google/volteer/variants/elemi/ramstage.c @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <delay.h> +#include <gpio.h> +#include <baseboard/variants.h> +#include <soc/gpio.h> + +void variant_ramstage_init(void) +{ + /* + * Assert FPMCU reset and enable power to FPMCU, + * wait for power rail to stabilize, + * and then deassert FPMCU reset. + * Waiting for the power rail to stabilize can take a while. + */ + gpio_output(GPP_C23, 0); + gpio_output(GPP_A21, 1); + mdelay(1); + gpio_output(GPP_C23, 1); +} |