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authorDoug Anderson <dianders@chromium.org>2015-02-21 03:53:38 +0300
committerMark Brown <broonie@kernel.org>2015-02-21 17:32:43 +0300
commit28249b0c2fa361cdac450a6f40242ed45408a24f (patch)
tree87af84719b4f00357987de00728a69714c4f1b02 /drivers/regulator/rk808-regulator.c
parentbfa76d49576599a4b9f9b7a71f23d73d6dcff735 (diff)
downloadlinux-28249b0c2fa361cdac450a6f40242ed45408a24f.tar.xz
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.c8
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",