}
#endif
+/**
+ * power_domain_get_by_index - Get the indexed power domain for a device.
+ *
+ * @dev: The client device.
+ * @power_domain: A pointer to a power domain struct to initialize.
+ * @index: Power domain index to be powered on.
+ *
+ * @return 0 if OK, or a negative error code.
+ */
+#if CONFIG_IS_ENABLED(POWER_DOMAIN)
+int power_domain_get_by_index(struct udevice *dev,
+ struct power_domain *power_domain, int index);
+#else
+static inline
+int power_domain_get_by_index(struct udevice *dev,
+ struct power_domain *power_domain, int index)
+{
+ return -ENOSYS;
+}
+#endif
+
/**
* power_domain_free - Free a previously requested power domain.
*