diff options
| author | Thierry Reding <treding@nvidia.com> | 2014-06-03 17:12:23 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2014-06-04 12:12:31 +0200 |
| commit | c69a9d51c1b3896d211d7d1c713babccd5c860ae (patch) | |
| tree | 11bd0ddf0abba85b3825d775f49e1ce18ac6358b | |
| parent | 01fd70a9906511445b9c8777d73ed104a3d57942 (diff) | |
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>
| -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 85585219ce8..ad9e0c9b7da 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), |