[PATCH 2/7] gpio: rcar: Add optional functional clock to bindings

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

From: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Laurent Pinchart <Laurent.pinchart@xxxxxxxxxxxxxxxx>
Cc: linux-gpio@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
---
 .../devicetree/bindings/gpio/renesas,gpio-rcar.txt |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt b/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
index f61cef74a212..9ccbe50dcec2 100644
--- a/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
+++ b/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
@@ -21,6 +21,10 @@ Required Properties:
     GPIO_ACTIVE_HIGH and GPIO_ACTIVE_LOW flags are supported.
   - gpio-ranges: Range of pins managed by the GPIO controller.
 
+Optional properties:
+
+  - clocks: Must contain a reference to the functional clock.
+
 Please refer to gpio.txt in this directory for details of gpio-ranges property
 and the common GPIO bindings used by client devices.
 
-- 
1.7.9.5

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