dt-bindings: rng: add clock to DT binding documentation for hwrng

Add clock to DT binding documentation.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt b/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt
index 202f2d09a23f2cb2d817c1733b88c1b93fb67690..4d403645ac9b3dcd513c5f55a7217542a1eb1d37 100644 (file)
--- a/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt
+++ b/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt
@@ -6,9 +6,16 @@ Required properties:
 - compatible : should be "amlogic,meson-rng"
 - reg : Specifies base physical address and size of the registers.
 
+Optional properties:
+
+- clocks : phandle to the following named clocks
+- clock-names: Name of core clock, must be "core"
+
 Example:
 
 rng {
-        compatible = "amlogic,meson-rng";
-        reg = <0x0 0xc8834000 0x0 0x4>;
+       compatible = "amlogic,meson-rng";
+       reg = <0x0 0xc8834000 0x0 0x4>;
+       clocks = <&clkc CLKID_RNG0>;
+       clock-names = "core";
 };