Allwinner MIPI DSI controllers are supplied with SoC DSI
power rails via VCC-DSI pin.

Some board still work without supplying this but give more
faith on datasheet and hardware schematics and document this
supply property in required property list.

Reviewed-by: Rob Herring <[email protected]>
Tested-by: Merlijn Wajer <[email protected]>
Signed-off-by: Jagan Teki <[email protected]>
---
 Documentation/devicetree/bindings/display/sunxi/sun6i-dsi.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/display/sunxi/sun6i-dsi.txt 
b/Documentation/devicetree/bindings/display/sunxi/sun6i-dsi.txt
index 6a6cf5de08b0..1cc40663b7a2 100644
--- a/Documentation/devicetree/bindings/display/sunxi/sun6i-dsi.txt
+++ b/Documentation/devicetree/bindings/display/sunxi/sun6i-dsi.txt
@@ -21,6 +21,7 @@ Required properties:
   - phys: phandle to the D-PHY
   - phy-names: must be "dphy"
   - resets: phandle to the reset controller driving the encoder
+  - vcc-dsi-supply: the VCC-DSI power supply of the DSI encoder
 
   - ports: A ports node with endpoint definitions as defined in
     Documentation/devicetree/bindings/media/video-interfaces.txt. The
-- 
2.18.0.321.gffc6fa0e3

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