DTS: Bindings: pca953x add an optional vcc-supply property

Hardware can have a switchable Vcc supply, so let's add it to
the bindings (the current Linux driver code already supports it).

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
index d2a9376828369b33aaa4108ac5def0343f669409..6a7cddb187c137703e4710afdad52e949db457d9 100644 (file)
--- a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
@@ -35,6 +35,7 @@ Required properties:
 Optional properties:
  - reset-gpios: GPIO specification for the RESET input. This is an
                active low signal to the PCA953x.
+ - vcc-supply: power supply regulator.
 
 Example: