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authorLaxman Dewangan <ldewangan@nvidia.com>2013-09-18 16:48:02 +0400
committerMark Brown <broonie@linaro.org>2013-09-18 20:13:02 +0400
commit00c877c69ba315d6c565a4df51c71b11e82cdeb8 (patch)
tree8b5dcf0d475476da3ee8c2cb310e9bce34e6d30a /drivers/regulator/of_regulator.c
parent272b98c6455f00884f0350f775c5342358ebb73f (diff)
downloadlinux-00c877c69ba315d6c565a4df51c71b11e82cdeb8.tar.xz
regulator: core: add support for configuring turn-on time through constraints
The turn-on time of the regulator depends on the regulator device's electrical characteristics. Sometimes regulator turn-on time also depends on the capacitive load on the given platform and it can be more than the datasheet value. The driver provides the enable-time as per datasheet. Add support for configure the enable ramp time through regulator constraints so that regulator core can take this value for enable time for that regulator. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator/of_regulator.c')
-rw-r--r--drivers/regulator/of_regulator.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index 7827384680d6..ea4f36f2cbe2 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -23,6 +23,8 @@ static void of_get_regulation_constraints(struct device_node *np,
const __be32 *min_uA, *max_uA, *ramp_delay;
struct property *prop;
struct regulation_constraints *constraints = &(*init_data)->constraints;
+ int ret;
+ u32 pval;
constraints->name = of_get_property(np, "regulator-name", NULL);
@@ -73,6 +75,10 @@ static void of_get_regulation_constraints(struct device_node *np,
else
constraints->ramp_disable = true;
}
+
+ ret = of_property_read_u32(np, "regulator-enable-ramp-delay", &pval);
+ if (!ret)
+ constraints->enable_time = pval;
}
/**