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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
This commit is contained in:
Doug Anderson 2015-02-20 16:53:38 -08:00 committed by Mark Brown
parent bfa76d4957
commit 28249b0c2f
1 changed files with 8 additions and 0 deletions
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8
drivers/regulator/rk808-regulator.c
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@ -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",