diff options
| author | Thierry Reding <treding@nvidia.com> | 2014-06-03 17:17:32 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-06-03 16:51:19 +0100 |
| commit | 2050afde19aeae33310bb62641ca52acad215cf8 (patch) | |
| tree | 4e201b93e1d2a871e9b2b7e64457343d935b7b7e | |
| parent | c9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff) | |
| download | talos-op-linux-2050afde19aeae33310bb62641ca52acad215cf8.tar.gz talos-op-linux-2050afde19aeae33310bb62641ca52acad215cf8.zip | |
regulator: as3722: Make 0 a valid selector
As of commit 064d5cd110f9 (regulator: core: Fix the init of DT defined
fixed regulators) the regulator core tries to query the current voltage
of a regulator when applying constraints. This exposes a bug in the
AS3722 regulator driver which fails to read the voltage of disabled
regulators. The reason is that the hardware is programmed to a selector
of 0, but none of the voltage tables include 0 as a valid selector. The
datasheets indicate that 0 is a valid selector when the regulators are
powered off.
To fix this, add a range including selector 0 to the voltage tables.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
| -rw-r--r-- | drivers/regulator/as3722-regulator.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/regulator/as3722-regulator.c b/drivers/regulator/as3722-regulator.c index 85585219ce82..ad9e0c9b7daf 100644 --- a/drivers/regulator/as3722-regulator.c +++ b/drivers/regulator/as3722-regulator.c @@ -433,6 +433,7 @@ static struct regulator_ops as3722_ldo3_extcntrl_ops = { }; static const struct regulator_linear_range as3722_ldo_ranges[] = { + REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0), REGULATOR_LINEAR_RANGE(825000, 0x01, 0x24, 25000), REGULATOR_LINEAR_RANGE(1725000, 0x40, 0x7F, 25000), }; @@ -609,6 +610,7 @@ static bool as3722_sd0_is_low_voltage(struct as3722_regulators *as3722_regs) } static const struct regulator_linear_range as3722_sd2345_ranges[] = { + REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0), REGULATOR_LINEAR_RANGE(612500, 0x01, 0x40, 12500), REGULATOR_LINEAR_RANGE(1425000, 0x41, 0x70, 25000), REGULATOR_LINEAR_RANGE(2650000, 0x71, 0x7F, 50000), |
