diff options
Diffstat (limited to 'src/mainboard/google/cherry')
| -rw-r--r-- | src/mainboard/google/cherry/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/mainboard/google/cherry/regulator.c | 141 |
2 files changed, 143 insertions, 0 deletions
diff --git a/src/mainboard/google/cherry/Makefile.inc b/src/mainboard/google/cherry/Makefile.inc index a0862d3646..e1e363c4ed 100644 --- a/src/mainboard/google/cherry/Makefile.inc +++ b/src/mainboard/google/cherry/Makefile.inc @@ -9,6 +9,7 @@ verstage-y += reset.c romstage-y += memlayout.ld romstage-y += boardid.c romstage-y += chromeos.c +romstage-y += regulator.c romstage-y += romstage.c romstage-y += sdram_configs.c @@ -16,4 +17,5 @@ ramstage-y += memlayout.ld ramstage-y += boardid.c ramstage-y += chromeos.c ramstage-y += mainboard.c +ramstage-y += regulator.c ramstage-y += reset.c diff --git a/src/mainboard/google/cherry/regulator.c b/src/mainboard/google/cherry/regulator.c new file mode 100644 index 0000000000..e7da942616 --- /dev/null +++ b/src/mainboard/google/cherry/regulator.c @@ -0,0 +1,141 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <console/console.h> +#include <ec/google/chromeec/ec.h> +#include <soc/mt6359p.h> +#include <soc/mt6360.h> +#include <soc/mt6691.h> +#include <soc/regulator.h> + +#define MT6691_I2C_NUM 7 + +static int get_mt6360_regulator_id(enum mtk_regulator regulator) +{ + switch (regulator) { + case MTK_REGULATOR_VDD2: + return MT6360_PMIC_BUCK1; + case MTK_REGULATOR_VDDQ: + return MT6360_PMIC_BUCK2; + default: + break; + } + + return -1; +} + +static int get_mt6359p_regulator_id(enum mtk_regulator regulator) +{ + return regulator == MTK_REGULATOR_VCORE ? MT6359P_GPU11 : -1; +} + +static int get_mt6691_regulator_id(enum mtk_regulator regulator) +{ + return regulator == MTK_REGULATOR_VMDDR ? MT6691_I2C_NUM : -1; +} + +static int check_regulator_control(enum mtk_regulator regulator) +{ + /* + * MT6880 is not controlled by SW. + * No need to control it. + */ + if (regulator == MTK_REGULATOR_VDD1) { + printk(BIOS_WARNING, + "[%d] MT6880 is not controlled by SW.\n", regulator); + return -1; + } + return 0; +} + +void mainboard_set_regulator_vol(enum mtk_regulator regulator, + uint32_t voltage_uv) +{ + if (check_regulator_control(regulator) < 0) + return; + + int id; + + id = get_mt6360_regulator_id(regulator); + if (id >= 0) { + mt6360_pmic_set_voltage(id, voltage_uv); + return; + } + + id = get_mt6359p_regulator_id(regulator); + if (id >= 0) { + mt6359p_buck_set_voltage(id, voltage_uv); + return; + } + + id = get_mt6691_regulator_id(regulator); + if (id >= 0) { + mt6691_set_voltage(id, voltage_uv); + return; + } + + printk(BIOS_ERR, "Invalid regulator ID: %d\n", regulator); +} + +uint32_t mainboard_get_regulator_vol(enum mtk_regulator regulator) +{ + if (check_regulator_control(regulator) < 0) + return 0; + + int id; + + id = get_mt6360_regulator_id(regulator); + if (id >= 0) + return mt6360_pmic_get_voltage(id); + + id = get_mt6359p_regulator_id(regulator); + if (id >= 0) + return mt6359p_buck_get_voltage(id); + + id = get_mt6691_regulator_id(regulator); + if (id >= 0) + return mt6691_get_voltage(id); + + printk(BIOS_ERR, "Invalid regulator ID: %d\n", regulator); + + return 0; +} + +int mainboard_enable_regulator(enum mtk_regulator regulator, uint8_t enable) +{ + if (check_regulator_control(regulator) < 0) + return 0; + + /* Return 0 if the regulator is already enabled or disabled. */ + if (mainboard_regulator_is_enabled(regulator) == enable) + return 0; + + int id; + + id = get_mt6360_regulator_id(regulator); + if (id >= 0) { + mt6360_pmic_enable(id, enable); + return 0; + } + + printk(BIOS_ERR, "Invalid regulator ID: %d\n", regulator); + + return -1; +} + +uint8_t mainboard_regulator_is_enabled(enum mtk_regulator regulator) +{ + if (check_regulator_control(regulator) < 0) + return 0; + + int id; + + id = get_mt6360_regulator_id(regulator); + if (id >= 0) + return mt6360_pmic_is_enabled(id); + + printk(BIOS_ERR, + "Failed to query regulator ID: %d\n; assuming disabled", + regulator); + + return 0; +} |