diff --git a/drivers/regulator/regulator_pca9420.c b/drivers/regulator/regulator_pca9420.c
index 063cdd90602..f2c1b35e1bf 100644
--- a/drivers/regulator/regulator_pca9420.c
+++ b/drivers/regulator/regulator_pca9420.c
@@ -271,23 +271,14 @@ static unsigned int regulator_pca9420_count_voltages(const struct device *dev)
 					       config->desc->num_ranges);
 }
 
-/**
- * Part of the extended regulator consumer API
- * Returns the supported voltage in uV for a given selector value
- */
-static int32_t regulator_pca9420_list_voltages(const struct device *dev,
-					       unsigned int selector)
+static int regulator_pca9420_list_voltage(const struct device *dev,
+					  unsigned int idx, int32_t *volt_uv)
 {
 	const struct regulator_pca9420_config *config = dev->config;
-	int32_t value;
 
-	if (linear_range_group_get_value(config->desc->ranges,
-					 config->desc->num_ranges, selector,
-					 &value) < 0) {
-		return 0;
-	}
-
-	return value;
+	return linear_range_group_get_value(config->desc->ranges,
+					    config->desc->num_ranges, idx,
+					    volt_uv);
 }
 
 /**
@@ -536,7 +527,7 @@ static const struct regulator_driver_api api = {
 	.enable = regulator_pca9420_enable,
 	.disable = regulator_pca9420_disable,
 	.count_voltages = regulator_pca9420_count_voltages,
-	.list_voltages = regulator_pca9420_list_voltages,
+	.list_voltage = regulator_pca9420_list_voltage,
 	.is_supported_voltage = regulator_pca9420_is_supported_voltage,
 	.set_voltage = regulator_pca9420_set_voltage,
 	.get_voltage = regulator_pca9420_get_voltage,
diff --git a/include/zephyr/drivers/regulator.h b/include/zephyr/drivers/regulator.h
index 7892337286e..b3628de51a1 100644
--- a/include/zephyr/drivers/regulator.h
+++ b/include/zephyr/drivers/regulator.h
@@ -32,8 +32,8 @@ __subsystem struct regulator_driver_api {
 	int (*enable)(const struct device *dev);
 	int (*disable)(const struct device *dev);
 	unsigned int (*count_voltages)(const struct device *dev);
-	int32_t (*list_voltages)(const struct device *dev,
-				 unsigned int selector);
+	int (*list_voltage)(const struct device *dev, unsigned int idx,
+			    int32_t *volt_uv);
 	int (*is_supported_voltage)(const struct device *dev, int32_t min_uv,
 				    int32_t max_uv);
 	int (*set_voltage)(const struct device *dev, int32_t min_uv,
@@ -110,7 +110,7 @@ int regulator_disable(const struct device *dev);
  *
  * Each voltage level supported by a regulator gets an index, starting from
  * zero. The total number of supported voltage levels can be used together with
- * regulator_list_voltages() to list all supported voltage levels.
+ * regulator_list_voltage() to list all supported voltage levels.
  *
  * @param dev Regulator device instance.
  *
@@ -129,25 +129,31 @@ static inline unsigned int regulator_count_voltages(const struct device *dev)
 }
 
 /**
- * @brief Obtain supported voltages.
+ * @brief Obtain the value of a voltage given an index.
+ *
+ * Each voltage level supported by a regulator gets an index, starting from
+ * zero. Together with regulator_count_voltages(), this function can be used
+ * to iterate over all supported voltages.
  *
  * @param dev Regulator device instance.
- * @param selector Voltage selector.
+ * @param idx Voltage index.
+ * @param[out] volt_uv Where voltage for the given @p index will be stored, in
+ * microvolts.
  *
- * @return voltage Voltage level in microvolts.
- * @retval 0 If selector code can't be used.
+ * @retval 0 If @p index corresponds to a supported voltage.
+ * @retval -EINVAL If @p index does not correspond to a supported voltage.
  */
-static inline int32_t regulator_list_voltages(const struct device *dev,
-					      unsigned int selector)
+static inline int regulator_list_voltage(const struct device *dev,
+					 unsigned int idx, int32_t *volt_uv)
 {
 	const struct regulator_driver_api *api =
 		(const struct regulator_driver_api *)dev->api;
 
-	if (api->list_voltages == NULL) {
-		return 0;
+	if (api->list_voltage == NULL) {
+		return -EINVAL;
 	}
 
-	return api->list_voltages(dev, selector);
+	return api->list_voltage(dev, idx, volt_uv);
 }
 
 /**