diff options
| author | Yidi Lin <yidi.lin@mediatek.com> | 2020-10-23 16:58:38 +0800 |
|---|---|---|
| committer | Hung-Te Lin <hungte@chromium.org> | 2020-11-18 06:13:26 +0000 |
| commit | dfd5ccee758030350957a821a286eaad07b79eaf (patch) | |
| tree | 4b9c55cea92af92db70b715049f8a61413d1cd74 | |
| parent | 99e6dd9f74c4d35189b078eda756575e642ca2c7 (diff) | |
mb/google/asurada: Implement enable_regulator and regulator_is_enabled
SD Card driver needs to access two regulators - MT6360_LDO5 and
MT6360_LDO3. These two regulators are disabled by default.
Two APIs are implemented:
- mainboard_enable_regulator: Configure the regulator as enabled/disabled.
- mainboard_regulator_is_enabled: Query if the regulator is enabled.
BUG=b:168863056,b:147789962
BRANCH=none
TEST=emerge-asurada coreboot
Change-Id: I391f908fcb33ffdcccc53063644482eabc863ac4
Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46687
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/mainboard/google/asurada/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/mainboard/google/asurada/regulator.c | 43 | ||||
| -rw-r--r-- | src/soc/mediatek/common/include/soc/regulator.h | 5 |
3 files changed, 49 insertions, 0 deletions
diff --git a/src/mainboard/google/asurada/Makefile.inc b/src/mainboard/google/asurada/Makefile.inc index 87582b7fbd..601b485555 100644 --- a/src/mainboard/google/asurada/Makefile.inc +++ b/src/mainboard/google/asurada/Makefile.inc @@ -20,3 +20,4 @@ ramstage-y += boardid.c ramstage-y += chromeos.c ramstage-y += mainboard.c ramstage-y += reset.c +ramstage-y += regulator.c diff --git a/src/mainboard/google/asurada/regulator.c b/src/mainboard/google/asurada/regulator.c index b06388dc66..d57df0126d 100644 --- a/src/mainboard/google/asurada/regulator.c +++ b/src/mainboard/google/asurada/regulator.c @@ -15,6 +15,10 @@ static int get_mt6360_regulator_id(enum mtk_regulator regulator) return MT6360_LDO7; case MTK_REGULATOR_VMDDR: return MT6360_LDO6; + case MTK_REGULATOR_VCC: + return MT6360_LDO5; + case MTK_REGULATOR_VCCQ: + return MT6360_LDO3; default: break; } @@ -90,3 +94,42 @@ uint32_t mainboard_get_regulator_vol(enum mtk_regulator regulator) return 0; } + +int mainboard_enable_regulator(enum mtk_regulator regulator, uint8_t enable) +{ + /* 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) { + printk(BIOS_WARNING, "Invalid regulator ID: %d\n", regulator); + return -1; + } + + return google_chromeec_regulator_enable(id, enable); +} + +uint8_t mainboard_regulator_is_enabled(enum mtk_regulator regulator) +{ + int id; + + id = get_mt6360_regulator_id(regulator); + if (id < 0) { + printk(BIOS_WARNING, "Invalid regulator ID: %d\n; assuming disabled", + regulator); + return 0; + } + + uint8_t enabled; + if (google_chromeec_regulator_is_enabled(id, &enabled) < 0) { + printk(BIOS_WARNING, + "Failed to query regulator ID: %d\n; assuming disabled", + regulator); + return 0; + } + + return enabled; +} diff --git a/src/soc/mediatek/common/include/soc/regulator.h b/src/soc/mediatek/common/include/soc/regulator.h index 6d9ff4e301..0cd0f1e8b7 100644 --- a/src/soc/mediatek/common/include/soc/regulator.h +++ b/src/soc/mediatek/common/include/soc/regulator.h @@ -11,10 +11,15 @@ enum mtk_regulator { MTK_REGULATOR_VDDQ, MTK_REGULATOR_VMDDR, MTK_REGULATOR_VCORE, + MTK_REGULATOR_VCC, + MTK_REGULATOR_VCCQ, }; void mainboard_set_regulator_vol(enum mtk_regulator regulator, uint32_t voltage_uv); uint32_t mainboard_get_regulator_vol(enum mtk_regulator regulator); +int mainboard_enable_regulator(enum mtk_regulator regulator, uint8_t enable); +uint8_t mainboard_regulator_is_enabled(enum mtk_regulator regulator); + #endif /* SOC_MEDIATEK_COMMON_REGULATOR_H */ |