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| author | Konstantin Porotchkin <kostap@marvell.com> | 2017-05-29 15:59:38 +0300 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2021-04-29 07:38:57 +0200 |
| commit | fec8c900c8b2a08661f6ac3e1e71d6af6aaa67cd (patch) | |
| tree | b37837fba8d03d6732897ccc081036d7720f8c44 /drivers | |
| parent | 939c4934c8e91b34b258c9487be6a889a6a43546 (diff) | |
| download | u-boot-fec8c900c8b2a08661f6ac3e1e71d6af6aaa67cd.tar.gz u-boot-fec8c900c8b2a08661f6ac3e1e71d6af6aaa67cd.tar.xz u-boot-fec8c900c8b2a08661f6ac3e1e71d6af6aaa67cd.zip | |
power: regulator: Add support for regulator-force-boot-off
Add support for regulator-force-boot-off DT property.
This property can be used by the board/device drivers for
turning off regulators on early init stages as pre-requisite
for the other components initialization.
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/regulator/regulator-uclass.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/power/regulator/regulator-uclass.c b/drivers/power/regulator/regulator-uclass.c index 4d2e730271..fac9606823 100644 --- a/drivers/power/regulator/regulator-uclass.c +++ b/drivers/power/regulator/regulator-uclass.c @@ -311,6 +311,17 @@ int regulator_autoset(struct udevice *dev) return ret; } +int regulator_unset(struct udevice *dev) +{ + struct dm_regulator_uclass_plat *uc_pdata; + + uc_pdata = dev_get_uclass_plat(dev); + if (uc_pdata && uc_pdata->force_off) + return regulator_set_enable(dev, false); + + return -EMEDIUMTYPE; +} + static void regulator_show(struct udevice *dev, int ret) { struct dm_regulator_uclass_plat *uc_pdata; @@ -443,6 +454,7 @@ static int regulator_pre_probe(struct udevice *dev) uc_pdata->boot_on = dev_read_bool(dev, "regulator-boot-on"); uc_pdata->ramp_delay = dev_read_u32_default(dev, "regulator-ramp-delay", 0); + uc_pdata->force_off = dev_read_bool(dev, "regulator-force-boot-off"); node = dev_read_subnode(dev, "regulator-state-mem"); if (ofnode_valid(node)) { @@ -495,6 +507,32 @@ int regulators_enable_boot_on(bool verbose) return ret; } +int regulators_enable_boot_off(bool verbose) +{ + struct udevice *dev; + struct uclass *uc; + int ret; + + ret = uclass_get(UCLASS_REGULATOR, &uc); + if (ret) + return ret; + for (uclass_first_device(UCLASS_REGULATOR, &dev); + dev; + uclass_next_device(&dev)) { + ret = regulator_unset(dev); + if (ret == -EMEDIUMTYPE) { + ret = 0; + continue; + } + if (verbose) + regulator_show(dev, ret); + if (ret == -ENOSYS) + ret = 0; + } + + return ret; +} + UCLASS_DRIVER(regulator) = { .id = UCLASS_REGULATOR, .name = "regulator", |