diff --git a/Documentation/devicetree/bindings/mfd/rn5t618.txt b/Documentation/devicetree/bindings/mfd/rn5t618.txt
index 65c23263cc54..b74e5e94d1cb 100644
--- a/Documentation/devicetree/bindings/mfd/rn5t618.txt
+++ b/Documentation/devicetree/bindings/mfd/rn5t618.txt
@@ -14,6 +14,10 @@ Required properties:
 		"ricoh,rc5t619"
  - reg: the I2C slave address of the device
 
+Optional properties:
+ - system-power-controller:
+   See Documentation/devicetree/bindings/power/power-controller.txt
+
 Sub-nodes:
  - regulators: the node is required if the regulator functionality is
    needed. The valid regulator names are: DCDC1, DCDC2, DCDC3, DCDC4
@@ -28,6 +32,7 @@ Example:
 	pmic@32 {
 		compatible = "ricoh,rn5t618";
 		reg = <0x32>;
+		system-power-controller;
 
 		regulators {
 			DCDC1 {