[RFC v2 1/3] power_supply: Define Binding for supplied-nodes

[Rhyland Klein <rklein-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>]

This property is meant to be used in device nodes which represent
power_supply devices that wish to provide a list of supplies to
which they provide power. A common case is a AC Charger with
the batteries it powers.

Signed-off-by: Rhyland Klein <rklein-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
v2:
  - Changed property to "power-supply" which should be contained in the
    battery rather than the charger. Also updated example to match.

 .../bindings/power_supply/power_supply.txt         |   23 ++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power_supply/power_supply.txt

diff --git a/Documentation/devicetree/bindings/power_supply/power_supply.txt b/Documentation/devicetree/bindings/power_supply/power_supply.txt
new file mode 100644
index 0000000..7d8951c
--- /dev/null
+++ b/Documentation/devicetree/bindings/power_supply/power_supply.txt
@@ -0,0 +1,23 @@
+Power Supply Core Support
+
+Optional Properties:
+ - power-supply : 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@e {
+		compatible = "some,ac-charger";
+		...
+	};
+
+	battery@b {
+		compatible = "some,battery";
+		...
+		power-supply = <&usb-charger>, <&ac-charger>;
+	};
-- 
1.7.9.5