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regulator: max77686: Configure enable time to properly handle regulator enable 

The enable time for buck regulators was not configured but actually is
essential: consumers, like usb3503, doing hard reset (regulator off/on)
should wait for the regulator to settle.

Configure the enable time according to datasheet.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2016-04-29 12:59:51 +02:00 committed by Mark Brown
parent 314a8203b6
commit a9597305d9
1 changed files with 5 additions and 0 deletions
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5
drivers/regulator/max77686-regulator.c
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@ -41,6 +41,8 @@
#define MAX77686_LDO_LOW_UVSTEP 25000
#define MAX77686_BUCK_MINUV 750000
#define MAX77686_BUCK_UVSTEP 50000
#define MAX77686_BUCK_ENABLE_TIME 40 /* us */
#define MAX77686_DVS_ENABLE_TIME 22 /* us */
#define MAX77686_RAMP_DELAY 100000 /* uV/us */
#define MAX77686_DVS_RAMP_DELAY 27500 /* uV/us */
#define MAX77686_DVS_MINUV 600000
@ -422,6 +424,7 @@ static struct regulator_ops max77686_buck_dvs_ops = {
.min_uV = MAX77686_BUCK_MINUV, \
.uV_step = MAX77686_BUCK_UVSTEP, \
.ramp_delay = MAX77686_RAMP_DELAY, \
.enable_time = MAX77686_BUCK_ENABLE_TIME, \
.n_voltages = MAX77686_VSEL_MASK + 1, \
.vsel_reg = MAX77686_REG_BUCK5OUT + (num - 5) * 2, \
.vsel_mask = MAX77686_VSEL_MASK, \
@ -439,6 +442,7 @@ static struct regulator_ops max77686_buck_dvs_ops = {
.min_uV = MAX77686_BUCK_MINUV, \
.uV_step = MAX77686_BUCK_UVSTEP, \
.ramp_delay = MAX77686_RAMP_DELAY, \
.enable_time = MAX77686_BUCK_ENABLE_TIME, \
.n_voltages = MAX77686_VSEL_MASK + 1, \
.vsel_reg = MAX77686_REG_BUCK1OUT, \
.vsel_mask = MAX77686_VSEL_MASK, \
@ -456,6 +460,7 @@ static struct regulator_ops max77686_buck_dvs_ops = {
.min_uV = MAX77686_DVS_MINUV, \
.uV_step = MAX77686_DVS_UVSTEP, \
.ramp_delay = MAX77686_DVS_RAMP_DELAY, \
.enable_time = MAX77686_DVS_ENABLE_TIME, \
.n_voltages = MAX77686_DVS_VSEL_MASK + 1, \
.vsel_reg = MAX77686_REG_BUCK2DVS1 + (num - 2) * 10, \
.vsel_mask = MAX77686_DVS_VSEL_MASK, \