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diff --git a/Documentation/devicetree/bindings/sound/hdmi.txt b/Documentation/devicetree/bindings/sound/hdmi.txt
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+Device-Tree bindings for dummy HDMI codec
+
+Required properties:
+        - compatible: should be "linux,hdmi-audio".
+
+CODEC output pins:
+  * TX
+
+CODEC input pins:
+  * RX
+
+Example node:
+
+        hdmi_audio: hdmi_audio@0 {
+                compatible = "linux,hdmi-audio";
+                status = "okay";
+        };