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| author | Chen-Yu Tsai <wens@csie.org> | 2016-01-12 14:42:38 +0800 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2016-01-26 16:20:05 +0100 |
| commit | 0509efb7e921ca1a274bb6b9702976e74f6b2b67 (patch) | |
| tree | 834bf5d298020d8ac84e2e6b84ee243a57ff9d00 /drivers | |
| parent | 3517a27ddb1d12154e263a4f0bf91b4b76c21536 (diff) | |
| download | u-boot-imx-0509efb7e921ca1a274bb6b9702976e74f6b2b67.zip u-boot-imx-0509efb7e921ca1a274bb6b9702976e74f6b2b67.tar.gz u-boot-imx-0509efb7e921ca1a274bb6b9702976e74f6b2b67.tar.bz2 | |
power: axp818: Add support for DLDO and ELDO regulators
AXP818 provides an array of LDOs to provide power to various peripherals.
None of these regulators are critical.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/Kconfig | 12 | ||||
| -rw-r--r-- | drivers/power/axp818.c | 44 |
2 files changed, 50 insertions, 6 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index dfd60aa..3d49b87 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -167,7 +167,7 @@ config AXP_ALDO4_VOLT config AXP_DLDO1_VOLT int "axp pmic dldo1 voltage" - depends on AXP221_POWER + depends on AXP221_POWER || AXP818_POWER default 0 ---help--- Set the voltage (mV) to program the axp pmic dldo1 at, set to 0 to @@ -177,7 +177,7 @@ config AXP_DLDO1_VOLT config AXP_DLDO2_VOLT int "axp pmic dldo2 voltage" - depends on AXP221_POWER + depends on AXP221_POWER || AXP818_POWER default 0 ---help--- Set the voltage (mV) to program the axp pmic dldo2 at, set to 0 to @@ -185,7 +185,7 @@ config AXP_DLDO2_VOLT config AXP_DLDO3_VOLT int "axp pmic dldo3 voltage" - depends on AXP221_POWER + depends on AXP221_POWER || AXP818_POWER default 0 ---help--- Set the voltage (mV) to program the axp pmic dldo3 at, set to 0 to @@ -201,7 +201,7 @@ config AXP_DLDO4_VOLT config AXP_ELDO1_VOLT int "axp pmic eldo1 voltage" - depends on AXP221_POWER + depends on AXP221_POWER || AXP818_POWER default 0 ---help--- Set the voltage (mV) to program the axp pmic eldo1 at, set to 0 to @@ -209,7 +209,7 @@ config AXP_ELDO1_VOLT config AXP_ELDO2_VOLT int "axp pmic eldo2 voltage" - depends on AXP221_POWER + depends on AXP221_POWER || AXP818_POWER default 0 ---help--- Set the voltage (mV) to program the axp pmic eldo2 at, set to 0 to @@ -217,7 +217,7 @@ config AXP_ELDO2_VOLT config AXP_ELDO3_VOLT int "axp pmic eldo3 voltage" - depends on AXP221_POWER + depends on AXP221_POWER || AXP818_POWER default 0 ---help--- Set the voltage (mV) to program the axp pmic eldo3 at, set to 0 to diff --git a/drivers/power/axp818.c b/drivers/power/axp818.c index 4b21a83..3119b64 100644 --- a/drivers/power/axp818.c +++ b/drivers/power/axp818.c @@ -110,6 +110,50 @@ int axp_set_dcdc5(unsigned int mvolt) AXP818_OUTPUT_CTRL1_DCDC5_EN); } +int axp_set_dldo(int dldo_num, unsigned int mvolt) +{ + int ret; + u8 cfg; + + if (dldo_num < 1 || dldo_num > 4) + return -EINVAL; + + if (mvolt == 0) + return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2, + AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); + + cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100); + if (dldo_num == 2 && mvolt > 3300) + cfg += 1 + axp818_mvolt_to_cfg(mvolt, 3400, 4200, 200); + ret = pmic_bus_write(AXP818_ELDO1_CTRL + (dldo_num - 1), cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP818_OUTPUT_CTRL2, + AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); +} + +int axp_set_eldo(int eldo_num, unsigned int mvolt) +{ + int ret; + u8 cfg; + + if (eldo_num < 1 || eldo_num > 3) + return -EINVAL; + + if (mvolt == 0) + return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2, + AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); + + cfg = axp818_mvolt_to_cfg(mvolt, 700, 1900, 50); + ret = pmic_bus_write(AXP818_ELDO1_CTRL + (eldo_num - 1), cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP818_OUTPUT_CTRL2, + AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); +} + int axp_init(void) { u8 axp_chip_id; |