regulator: tps65910: Provide settling time for enabling rails
There is settling time for each rails when it is switched to
ON. Implementing enable time for returning proper settling time
of regulator rails when it is enabled.
Filling the on-time for each rail as per tps65910/tps65911
datasheets.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/tps65910-regulator.c b/drivers/regulator/tps65910-regulator.c
index aa11ce8..f28f41a 100644
--- a/drivers/regulator/tps65910-regulator.c
+++ b/drivers/regulator/tps65910-regulator.c
@@ -89,11 +89,13 @@
unsigned max_uV;
u8 n_voltages;
const u16 *voltage_table;
+ int enable_time_us;
};
static struct tps_info tps65910_regs[] = {
{
.name = "VRTC",
+ .enable_time_us = 2200,
},
{
.name = "VIO",
@@ -101,16 +103,19 @@
.max_uV = 3300000,
.n_voltages = ARRAY_SIZE(VIO_VSEL_table),
.voltage_table = VIO_VSEL_table,
+ .enable_time_us = 350,
},
{
.name = "VDD1",
.min_uV = 600000,
.max_uV = 4500000,
+ .enable_time_us = 350,
},
{
.name = "VDD2",
.min_uV = 600000,
.max_uV = 4500000,
+ .enable_time_us = 350,
},
{
.name = "VDD3",
@@ -118,6 +123,7 @@
.max_uV = 5000000,
.n_voltages = ARRAY_SIZE(VDD3_VSEL_table),
.voltage_table = VDD3_VSEL_table,
+ .enable_time_us = 200,
},
{
.name = "VDIG1",
@@ -125,6 +131,7 @@
.max_uV = 2700000,
.n_voltages = ARRAY_SIZE(VDIG1_VSEL_table),
.voltage_table = VDIG1_VSEL_table,
+ .enable_time_us = 100,
},
{
.name = "VDIG2",
@@ -132,6 +139,7 @@
.max_uV = 1800000,
.n_voltages = ARRAY_SIZE(VDIG2_VSEL_table),
.voltage_table = VDIG2_VSEL_table,
+ .enable_time_us = 100,
},
{
.name = "VPLL",
@@ -139,6 +147,7 @@
.max_uV = 2500000,
.n_voltages = ARRAY_SIZE(VPLL_VSEL_table),
.voltage_table = VPLL_VSEL_table,
+ .enable_time_us = 100,
},
{
.name = "VDAC",
@@ -146,6 +155,7 @@
.max_uV = 2850000,
.n_voltages = ARRAY_SIZE(VDAC_VSEL_table),
.voltage_table = VDAC_VSEL_table,
+ .enable_time_us = 100,
},
{
.name = "VAUX1",
@@ -153,6 +163,7 @@
.max_uV = 2850000,
.n_voltages = ARRAY_SIZE(VAUX1_VSEL_table),
.voltage_table = VAUX1_VSEL_table,
+ .enable_time_us = 100,
},
{
.name = "VAUX2",
@@ -160,6 +171,7 @@
.max_uV = 3300000,
.n_voltages = ARRAY_SIZE(VAUX2_VSEL_table),
.voltage_table = VAUX2_VSEL_table,
+ .enable_time_us = 100,
},
{
.name = "VAUX33",
@@ -167,6 +179,7 @@
.max_uV = 3300000,
.n_voltages = ARRAY_SIZE(VAUX33_VSEL_table),
.voltage_table = VAUX33_VSEL_table,
+ .enable_time_us = 100,
},
{
.name = "VMMC",
@@ -174,12 +187,14 @@
.max_uV = 3300000,
.n_voltages = ARRAY_SIZE(VMMC_VSEL_table),
.voltage_table = VMMC_VSEL_table,
+ .enable_time_us = 100,
},
};
static struct tps_info tps65911_regs[] = {
{
.name = "VRTC",
+ .enable_time_us = 2200,
},
{
.name = "VIO",
@@ -187,72 +202,84 @@
.max_uV = 3300000,
.n_voltages = ARRAY_SIZE(VIO_VSEL_table),
.voltage_table = VIO_VSEL_table,
+ .enable_time_us = 350,
},
{
.name = "VDD1",
.min_uV = 600000,
.max_uV = 4500000,
.n_voltages = 73,
+ .enable_time_us = 350,
},
{
.name = "VDD2",
.min_uV = 600000,
.max_uV = 4500000,
.n_voltages = 73,
+ .enable_time_us = 350,
},
{
.name = "VDDCTRL",
.min_uV = 600000,
.max_uV = 1400000,
.n_voltages = 65,
+ .enable_time_us = 900,
},
{
.name = "LDO1",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 47,
+ .enable_time_us = 420,
},
{
.name = "LDO2",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 47,
+ .enable_time_us = 420,
},
{
.name = "LDO3",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 24,
+ .enable_time_us = 230,
},
{
.name = "LDO4",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 47,
+ .enable_time_us = 230,
},
{
.name = "LDO5",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 24,
+ .enable_time_us = 230,
},
{
.name = "LDO6",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 24,
+ .enable_time_us = 230,
},
{
.name = "LDO7",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 24,
+ .enable_time_us = 230,
},
{
.name = "LDO8",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 24,
+ .enable_time_us = 230,
},
};
@@ -482,6 +509,12 @@
return tps65910_clear_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED);
}
+static int tps65910_enable_time(struct regulator_dev *dev)
+{
+ struct tps65910_reg *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ return pmic->info[id]->enable_time_us;
+}
static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
{
@@ -866,6 +899,7 @@
.is_enabled = tps65910_is_enabled,
.enable = tps65910_enable,
.disable = tps65910_disable,
+ .enable_time = tps65910_enable_time,
.set_mode = tps65910_set_mode,
.get_mode = tps65910_get_mode,
.get_voltage = tps65910_get_voltage_dcdc,
@@ -877,6 +911,7 @@
.is_enabled = tps65910_is_enabled,
.enable = tps65910_enable,
.disable = tps65910_disable,
+ .enable_time = tps65910_enable_time,
.set_mode = tps65910_set_mode,
.get_mode = tps65910_get_mode,
.get_voltage = tps65910_get_voltage_vdd3,
@@ -887,6 +922,7 @@
.is_enabled = tps65910_is_enabled,
.enable = tps65910_enable,
.disable = tps65910_disable,
+ .enable_time = tps65910_enable_time,
.set_mode = tps65910_set_mode,
.get_mode = tps65910_get_mode,
.get_voltage = tps65910_get_voltage,
@@ -898,6 +934,7 @@
.is_enabled = tps65910_is_enabled,
.enable = tps65910_enable,
.disable = tps65910_disable,
+ .enable_time = tps65910_enable_time,
.set_mode = tps65910_set_mode,
.get_mode = tps65910_get_mode,
.get_voltage = tps65911_get_voltage,