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diff --git a/Documentation/devicetree/bindings/sound/atmel-at91sam9g20ek-wm8731-audio.txt b/Documentation/devicetree/bindings/sound/atmel-at91sam9g20ek-wm8731-audio.txt
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+* Atmel at91sam9g20ek wm8731 audio complex
+
+Required properties:
+  - compatible: "atmel,at91sam9g20ek-wm8731-audio"
+  - atmel,model: The user-visible name of this sound complex.
+  - atmel,audio-routing: A list of the connections between audio components.
+  - atmel,ssc-controller: The phandle of the SSC controller
+  - atmel,audio-codec: The phandle of the WM8731 audio codec
+Optional properties:
+  - pinctrl-names, pinctrl-0: Please refer to pinctrl-bindings.txt
+
+Example:
+sound {
+        compatible = "atmel,at91sam9g20ek-wm8731-audio";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_pck0_as_mck>;
+
+        atmel,model = "wm8731 @ AT91SAMG20EK";
+
+        atmel,audio-routing =
+                "Ext Spk", "LHPOUT",
+                "Int MIC", "MICIN";
+
+        atmel,ssc-controller = <&ssc0>;
+        atmel,audio-codec = <&wm8731>;
+};