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regulator: Add soft start support

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Some regulators support a "soft start" feature where the voltage
ramps up slowly when the regulator is enabled. Add an op
(set_soft_start) and a DT property + constraint to support this.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Stephen Boyd
2015-06-11 17:37:05 -07:00
committed by Mark Brown
parent 23c779b9f9
commit 57f66b7886
5 changed files with 15 additions and 0 deletions
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3
drivers/regulator/of_regulator.c
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@@ -84,6 +84,9 @@ static void of_get_regulation_constraints(struct device_node *np,
if (!ret)
constraints->enable_time = pval;
constraints->soft_start = of_property_read_bool(np,
"regulator-soft-start");
if (!of_property_read_u32(np, "regulator-initial-mode", &pval)) {
if (desc && desc->of_map_mode) {
ret = desc->of_map_mode(pval);