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authorThierry Reding <treding@nvidia.com>2014-06-03 19:17:32 +0400
committerMark Brown <broonie@linaro.org>2014-06-03 19:51:19 +0400
commit2050afde19aeae33310bb62641ca52acad215cf8 (patch)
tree4e201b93e1d2a871e9b2b7e64457343d935b7b7e /drivers/regulator/as3722-regulator.c
parentc9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff)
downloadlinux-2050afde19aeae33310bb62641ca52acad215cf8.tar.xz
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>
Diffstat (limited to 'drivers/regulator/as3722-regulator.c')
-rw-r--r--drivers/regulator/as3722-regulator.c2
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),