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diff --git a/Documentation/devicetree/bindings/power_supply/power_supply.txt b/Documentation/devicetree/bindings/power_supply/power_supply.txt
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+++ b/Documentation/devicetree/bindings/power_supply/power_supply.txt
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+Power Supply Core Support
+
+Optional Properties:
+ - power-supplies : This property is added to a supply in order to list the
+   devices which supply it power, referenced by their phandles.
+
+Example:
+
+        usb-charger: power@e {
+                compatible = "some,usb-charger";
+                ...
+        };
+
+        ac-charger: power@c {
+                compatible = "some,ac-charger";
+                ...
+        };
+
+        battery@b {
+                compatible = "some,battery";
+                ...
+                power-supplies = <&usb-charger>, <&ac-charger>;
+        };