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| author | Krzysztof Kozlowski <k.kozlowski@samsung.com> | 2016-04-29 13:59:51 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-04-29 14:31:39 +0300 |
| commit | a9597305d97f6cf7c9e89dc1461e834c446d91fd (patch) | |
| tree | 30082d1a5e5b8c70db61f0c4abe34ef9f16b50fd | |
| parent | 314a8203b6de2df164399996ece1412ae8f6270d (diff) | |
| download | linux-a9597305d97f6cf7c9e89dc1461e834c446d91fd.tar.xz | |
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>
| -rw-r--r-- | drivers/regulator/max77686-regulator.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/regulator/max77686-regulator.c b/drivers/regulator/max77686-regulator.c index d1ab6a4da88f..ac4fa581e0a5 100644 --- a/drivers/regulator/max77686-regulator.c +++ b/drivers/regulator/max77686-regulator.c @@ -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, \ |