diff options
Diffstat (limited to 'src/mainboard/amd/chausie/ec.c')
-rw-r--r-- | src/mainboard/amd/chausie/ec.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/mainboard/amd/chausie/ec.c b/src/mainboard/amd/chausie/ec.c new file mode 100644 index 0000000000..ac484b2174 --- /dev/null +++ b/src/mainboard/amd/chausie/ec.c @@ -0,0 +1,58 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <ec/acpi/ec.h> +#include "ec.h" + +#define CHAUSIE_EC_CMD 0x666 +#define CHAUSIE_EC_DATA 0x662 + +#define EC_GPIO_3_ADDR 0xA3 +#define EC_GPIO_LOM_RESET_AUX (1 << 1) + +#define EC_GPIO_7_ADDR 0xA7 +#define EC_GPIO_DT_PWREN (1 << 2) +#define EC_GPIO_WWAN_MODULE_RST (1 << 5) + +#define EC_GPIO_8_ADDR 0xA8 +#define EC_GPIO_SMBUS0_EN (1 << 0) + +#define EC_GPIO_A_ADDR 0xAA +#define EC_GPIO_WWAN_PWREN (1 << 3) +#define EC_GPIO_M2_SSD0_PWREN (1 << 6) +#define EC_GPIO_LOM_PWREN (1 << 7) + +#define EC_GPIO_C_ADDR 0xAC +#define EC_GPIO_DT_N_WLAN_SW (1 << 1) +#define EC_GPIO_MP2_SEL (1 << 2) +#define EC_GPIO_WWAN_N_LOM_SW (1 << 3) + +static void configure_ec_gpio(void) +{ + uint8_t tmp; + + tmp = ec_read(EC_GPIO_3_ADDR); + tmp |= EC_GPIO_LOM_RESET_AUX; + ec_write(EC_GPIO_3_ADDR, tmp); + + tmp = ec_read(EC_GPIO_7_ADDR); + tmp |= EC_GPIO_WWAN_MODULE_RST | EC_GPIO_DT_PWREN; + ec_write(EC_GPIO_7_ADDR, tmp); + + tmp = ec_read(EC_GPIO_8_ADDR); + tmp |= EC_GPIO_SMBUS0_EN; + ec_write(EC_GPIO_8_ADDR, tmp); + + tmp = ec_read(EC_GPIO_A_ADDR); + tmp |= EC_GPIO_M2_SSD0_PWREN | EC_GPIO_LOM_PWREN | EC_GPIO_WWAN_PWREN; + ec_write(EC_GPIO_A_ADDR, tmp); + + tmp = ec_read(EC_GPIO_C_ADDR); + tmp |= EC_GPIO_WWAN_N_LOM_SW | EC_GPIO_MP2_SEL | EC_GPIO_DT_N_WLAN_SW; + ec_write(EC_GPIO_C_ADDR, tmp); +} + +void chausie_ec_init(void) +{ + ec_set_ports(CHAUSIE_EC_CMD, CHAUSIE_EC_DATA); + configure_ec_gpio(); +} |