* [PATCH v2] regulator: arizona-ldo1: Add ramp time for HI_PWR
@ 2015-03-25 9:32 Charles Keepax
0 siblings, 0 replies; only message in thread
From: Charles Keepax @ 2015-03-25 9:32 UTC (permalink / raw)
To: broonie; +Cc: lgirdwood, linux-kernel, patches
From: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
For regulators that support HI_PWR we need to ensure that switching to
1.8v allows time for the regulator to reach that voltage.
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
Changes since v1:
- Don't ever return a zero ramp time
drivers/regulator/arizona-ldo1.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/regulator/arizona-ldo1.c b/drivers/regulator/arizona-ldo1.c
index a1d07d3..9ee2fd6 100644
--- a/drivers/regulator/arizona-ldo1.c
+++ b/drivers/regulator/arizona-ldo1.c
@@ -113,6 +113,14 @@ static int arizona_ldo1_hc_get_voltage_sel(struct regulator_dev *rdev)
return (val & ARIZONA_LDO1_VSEL_MASK) >> ARIZONA_LDO1_VSEL_SHIFT;
}
+static int arizona_ldo1_hc_set_voltage_time_sel(struct regulator_dev *rdev,
+ unsigned int old_selector,
+ unsigned int new_selector)
+{
+ /* Just use worst case switching time for now */
+ return 25;
+}
+
static struct regulator_ops arizona_ldo1_hc_ops = {
.list_voltage = arizona_ldo1_hc_list_voltage,
.map_voltage = arizona_ldo1_hc_map_voltage,
@@ -120,6 +128,7 @@ static struct regulator_ops arizona_ldo1_hc_ops = {
.set_voltage_sel = arizona_ldo1_hc_set_voltage_sel,
.get_bypass = regulator_get_bypass_regmap,
.set_bypass = regulator_set_bypass_regmap,
+ .set_voltage_time_sel = arizona_ldo1_hc_set_voltage_time_sel,
};
static const struct regulator_desc arizona_ldo1_hc = {
--
1.7.2.5
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2015-03-25 9:32 [PATCH v2] regulator: arizona-ldo1: Add ramp time for HI_PWR Charles Keepax
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