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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-12-05 10:58:41 +0000
committerEric Miao <eric.miao@linaro.org>2012-01-11 21:45:38 +0800
commita12d38906071ebde2628de5623ff99ee18db3895 (patch)
treeccfc50581c1fb7dc947b4ab571ab1ff25867eee9
parent4422fec5eb42822fe06a83b2ff8a41d5c23498d2 (diff)
downloadlinux-linaro-a12d38906071ebde2628de5623ff99ee18db3895.tar.gz
regulator: If a single voltage is set with device tree then set apply_uV
Otherwise there is no way in the bindings to configure a fixed voltage via software. It seems reasonable to assume that if the binding explicitly specifies a voltage we want to actually use that voltage. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
-rw-r--r--drivers/regulator/of_regulator.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index acd7045d160..b7b3fc3b09e 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -34,6 +34,9 @@ static void of_get_regulation_constraints(struct device_node *np,
/* Voltage change possible? */
if (constraints->min_uV != constraints->max_uV)
constraints->valid_ops_mask |= REGULATOR_CHANGE_VOLTAGE;
+ /* Only one voltage? Then make sure it's set. */
+ if (constraints->min_uV == constraints->max_uV)
+ constraints->apply_uV = true;
uV_offset = of_get_property(np, "regulator-microvolt-offset", NULL);
if (uV_offset)