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| author | Doug Anderson <dianders@chromium.org> | 2015-02-20 16:53:38 -0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-02-21 23:32:43 +0900 |
| commit | 28249b0c2fa361cdac450a6f40242ed45408a24f (patch) | |
| tree | 87af84719b4f00357987de00728a69714c4f1b02 /drivers/regulator/rk808-regulator.c | |
| parent | bfa76d49576599a4b9f9b7a71f23d73d6dcff735 (diff) | |
| download | linux-stable-28249b0c2fa361cdac450a6f40242ed45408a24f.tar.gz linux-stable-28249b0c2fa361cdac450a6f40242ed45408a24f.tar.bz2 linux-stable-28249b0c2fa361cdac450a6f40242ed45408a24f.zip | |
regulator: rk808: Set the enable time for LDOs
The LDOs are documented in the rk808 datasheet to have a soft start
time of 400us. Add that to the driver. If this time takes longer on
a certain board the device tree should be able to override with
"regulator-enable-ramp-delay".
This fixes some dw_mmc probing problems (together with other patches
posted to the mmc maiing lists) on rk3288.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/regulator/rk808-regulator.c')
| -rw-r--r-- | drivers/regulator/rk808-regulator.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/regulator/rk808-regulator.c b/drivers/regulator/rk808-regulator.c index c94a3e0f3b91..3f6722863bd2 100644 --- a/drivers/regulator/rk808-regulator.c +++ b/drivers/regulator/rk808-regulator.c @@ -235,6 +235,7 @@ static const struct regulator_desc rk808_reg[] = { .vsel_mask = RK808_LDO_VSEL_MASK, .enable_reg = RK808_LDO_EN_REG, .enable_mask = BIT(0), + .enable_time = 400, .owner = THIS_MODULE, }, { .name = "LDO_REG2", @@ -249,6 +250,7 @@ static const struct regulator_desc rk808_reg[] = { .vsel_mask = RK808_LDO_VSEL_MASK, .enable_reg = RK808_LDO_EN_REG, .enable_mask = BIT(1), + .enable_time = 400, .owner = THIS_MODULE, }, { .name = "LDO_REG3", @@ -263,6 +265,7 @@ static const struct regulator_desc rk808_reg[] = { .vsel_mask = RK808_BUCK4_VSEL_MASK, .enable_reg = RK808_LDO_EN_REG, .enable_mask = BIT(2), + .enable_time = 400, .owner = THIS_MODULE, }, { .name = "LDO_REG4", @@ -277,6 +280,7 @@ static const struct regulator_desc rk808_reg[] = { .vsel_mask = RK808_LDO_VSEL_MASK, .enable_reg = RK808_LDO_EN_REG, .enable_mask = BIT(3), + .enable_time = 400, .owner = THIS_MODULE, }, { .name = "LDO_REG5", @@ -291,6 +295,7 @@ static const struct regulator_desc rk808_reg[] = { .vsel_mask = RK808_LDO_VSEL_MASK, .enable_reg = RK808_LDO_EN_REG, .enable_mask = BIT(4), + .enable_time = 400, .owner = THIS_MODULE, }, { .name = "LDO_REG6", @@ -305,6 +310,7 @@ static const struct regulator_desc rk808_reg[] = { .vsel_mask = RK808_LDO_VSEL_MASK, .enable_reg = RK808_LDO_EN_REG, .enable_mask = BIT(5), + .enable_time = 400, .owner = THIS_MODULE, }, { .name = "LDO_REG7", @@ -319,6 +325,7 @@ static const struct regulator_desc rk808_reg[] = { .vsel_mask = RK808_LDO_VSEL_MASK, .enable_reg = RK808_LDO_EN_REG, .enable_mask = BIT(6), + .enable_time = 400, .owner = THIS_MODULE, }, { .name = "LDO_REG8", @@ -333,6 +340,7 @@ static const struct regulator_desc rk808_reg[] = { .vsel_mask = RK808_LDO_VSEL_MASK, .enable_reg = RK808_LDO_EN_REG, .enable_mask = BIT(7), + .enable_time = 400, .owner = THIS_MODULE, }, { .name = "SWITCH_REG1", |