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drivers: regulator: Added initial voltage configuration

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The regulator driver has a configured min/max range that is used
to limit set values, and to initialise the regulator.

A new init value has been added, so that the startup voltage can
be higher than the lowest permitted value.

Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
This commit is contained in:
Andy Sinclair 2023-03-13 13:29:30 +00:00 • committed by Carles Cufí
commit a00713bc45
3 changed files with 15 additions and 0 deletions
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7
drivers/regulator/regulator_common.c
View file

@ -28,6 +28,13 @@ int regulator_common_init(const struct device *dev, bool is_enabled)
} }
} }
if (config->init_uv > INT32_MIN) {
ret = regulator_set_voltage(dev, config->init_uv, config->init_uv);
if (ret < 0) {
return ret;
}
}
/* If we have valid range values, we try to match them before enabling */ /* If we have valid range values, we try to match them before enabling */
if ((config->min_uv > INT32_MIN) || (config->max_uv < INT32_MAX)) { if ((config->min_uv > INT32_MIN) || (config->max_uv < INT32_MAX)) {

4
dts/bindings/regulator/regulator.yaml
View file

@ -15,6 +15,10 @@ properties:
type: string type: string
description: A string used as a descriptive name for regulator outputs description: A string used as a descriptive name for regulator outputs
regulator-init-microvolt:
type: int
description: Voltage set during initialisation
regulator-min-microvolt: regulator-min-microvolt:
type: int type: int
description: smallest voltage consumers may set description: smallest voltage consumers may set

4
include/zephyr/drivers/regulator.h
View file

@ -123,6 +123,8 @@ struct regulator_common_config {
int32_t min_uv; int32_t min_uv;
/** Maximum allowed voltage, in microvolts. */ /** Maximum allowed voltage, in microvolts. */
int32_t max_uv; int32_t max_uv;
/** Initial voltage, in microvolts. */
int32_t init_uv;
/** Minimum allowed current, in microamps. */ /** Minimum allowed current, in microamps. */
int32_t min_ua; int32_t min_ua;
/** Maximum allowed current, in microamps. */ /** Maximum allowed current, in microamps. */
@ -148,6 +150,8 @@ struct regulator_common_config {
INT32_MIN), \ INT32_MIN), \
.max_uv = DT_PROP_OR(node_id, regulator_max_microvolt, \ .max_uv = DT_PROP_OR(node_id, regulator_max_microvolt, \
INT32_MAX), \ INT32_MAX), \
.init_uv = DT_PROP_OR(node_id, regulator_init_microvolt, \
INT32_MIN), \
.min_ua = DT_PROP_OR(node_id, regulator_min_microamp, \ .min_ua = DT_PROP_OR(node_id, regulator_min_microamp, \
INT32_MIN), \ INT32_MIN), \
.max_ua = DT_PROP_OR(node_id, regulator_max_microamp, \ .max_ua = DT_PROP_OR(node_id, regulator_max_microamp, \