+
+#ifdef CONFIG_LED_BLINK
+ /**
+ * led_set_period() - set the blink period of an LED
+ *
+ * Thie records the period if supported, or returns -ENOSYS if not.
+ * To start the LED blinking, use set_state().
+ *
+ * @dev: LED device to change
+ * @period_ms: LED blink period in milliseconds
+ * @return 0 if OK, -ve on error
+ */
+ int (*set_period)(struct udevice *dev, int period_ms);
+#endif