diff --git a/Documentation/devicetree/bindings/sound/rockchip-spdif.yaml b/Documentation/devicetree/bindings/sound/rockchip-spdif.yaml
index 7bad6f16fe6024a9af8fa3580684d759e1f53d0b..62a61b68dfef767be0dd488b21bc1d456c9b1627 100644
--- a/Documentation/devicetree/bindings/sound/rockchip-spdif.yaml
+++ b/Documentation/devicetree/bindings/sound/rockchip-spdif.yaml
@@ -27,6 +27,7 @@ properties:
           - enum:
               - rockchip,rk3188-spdif
               - rockchip,rk3288-spdif
+              - rockchip,rk3308-spdif
           - const: rockchip,rk3066-spdif
 
   reg: