diff options
| author | Laxman Dewangan <ldewangan@nvidia.com> | 2013-09-18 16:48:02 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-09-18 20:13:02 +0400 |
| commit | 00c877c69ba315d6c565a4df51c71b11e82cdeb8 (patch) | |
| tree | 8b5dcf0d475476da3ee8c2cb310e9bce34e6d30a /drivers/regulator | |
| parent | 272b98c6455f00884f0350f775c5342358ebb73f (diff) | |
| download | linux-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')
| -rw-r--r-- | drivers/regulator/core.c | 2 | ||||
| -rw-r--r-- | drivers/regulator/of_regulator.c | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index a01b8b3b70ca..5217c1964c32 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1186,6 +1186,8 @@ overflow_err: static int _regulator_get_enable_time(struct regulator_dev *rdev) { + if (rdev->constraints && rdev->constraints->enable_time) + return rdev->constraints->enable_time; if (!rdev->desc->ops->enable_time) return rdev->desc->enable_time; return rdev->desc->ops->enable_time(rdev); 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; } /** |