diff --git a/Documentation/devicetree/bindings/media/spi/sony-cxd2880.txt b/Documentation/devicetree/bindings/media/spi/sony-cxd2880.txt
index fc5aa263abe53dfe6caffaa40dcb6d501523951a..98a72c0b3c6486ba881dd3f785120f5758cc5ba1 100644
--- a/Documentation/devicetree/bindings/media/spi/sony-cxd2880.txt
+++ b/Documentation/devicetree/bindings/media/spi/sony-cxd2880.txt
@@ -5,6 +5,10 @@ Required properties:
 - reg: SPI chip select number for the device.
 - spi-max-frequency: Maximum bus speed, should be set to <55000000> (55MHz).
 
+Optional properties:
+- vcc-supply: Optional phandle to the vcc regulator to power the adapter,
+  as described in the file ../regulator/regulator.txt
+
 Example:
 
 cxd2880@0 {