diff --git a/Documentation/devicetree/bindings/sound/mt8183-mt6358-ts3a227-max98357.txt b/Documentation/devicetree/bindings/sound/mt8183-mt6358-ts3a227-max98357.txt
index 5afd3d8dab845709852740b615c70d491f7b22b4..5e455129eb968003a7bd8c16424a6e5b0911816d 100644
--- a/Documentation/devicetree/bindings/sound/mt8183-mt6358-ts3a227-max98357.txt
+++ b/Documentation/devicetree/bindings/sound/mt8183-mt6358-ts3a227-max98357.txt
@@ -9,6 +9,7 @@ Optional properties:
 - mediatek,headset-codec: the phandles of ts3a227 codecs
 - mediatek,ec-codec: the phandle of EC codecs.
                      See google,cros-ec-codec.txt for more details.
+- mediatek,hdmi-codec: the phandles of HDMI codec
 
 Example:
 
@@ -16,6 +17,7 @@ Example:
 		compatible = "mediatek,mt8183_mt6358_ts3a227_max98357";
 		mediatek,headset-codec = <&ts3a227>;
 		mediatek,ec-codec = <&ec_codec>;
+		mediatek,hdmi-codec = <&it6505dptx>;
 		mediatek,platform = <&afe>;
 	};