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| author | Laxman Dewangan | 2017-04-04 15:29:50 +0200 |
|---|---|---|
| committer | Mark Brown | 2017-04-05 19:25:10 +0200 |
| commit | d6c1dc3f52e3a65f35c58433ba57d14c0bad902f (patch) | |
| tree | 9b0d994afe52df7445db81c207fe922842d6f1c4 /drivers/regulator/of_regulator.c | |
| parent | regulator: DT: Add settling time property for non-linear voltage change (diff) | |
| download | kernel-qcow2-linux-d6c1dc3f52e3a65f35c58433ba57d14c0bad902f.tar.gz kernel-qcow2-linux-d6c1dc3f52e3a65f35c58433ba57d14c0bad902f.tar.xz kernel-qcow2-linux-d6c1dc3f52e3a65f35c58433ba57d14c0bad902f.zip | |
regulator: Add settling time for non-linear voltage transition
Some regulators (some PWM regulators) have the voltage transition
non-linear i.e. exponentially. On such cases, the settling time
for voltage transition can not be presented in the voltage-ramp-delay.
Add new property for non-linear voltage transition and handle this
in getting the voltage settling time.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/of_regulator.c')
| -rw-r--r-- | drivers/regulator/of_regulator.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c index 4f613ec99500..09d677d5d3f0 100644 --- a/drivers/regulator/of_regulator.c +++ b/drivers/regulator/of_regulator.c @@ -86,6 +86,10 @@ static void of_get_regulation_constraints(struct device_node *np, constraints->ramp_disable = true; } + ret = of_property_read_u32(np, "regulator-settling-time-us", &pval); + if (!ret) + constraints->settling_time = pval; + ret = of_property_read_u32(np, "regulator-enable-ramp-delay", &pval); if (!ret) constraints->enable_time = pval; |