diff --git a/Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml b/Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml
index dce8b4136ec6db4e952bfa540410236f845be613..ce3e18b50230dc9b6d4d193593fd59df2adeb972 100644
--- a/Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml
+++ b/Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml
@@ -112,7 +112,7 @@ properties:
       rockchip,i2s-rx-route = <3> would mean sdi3 is receiving from data0.
     maxItems: 4
     items:
-      - enum: [0, 1, 2, 3]
+      enum: [0, 1, 2, 3]
 
   rockchip,i2s-tx-route:
     $ref: /schemas/types.yaml#/definitions/uint32-array
@@ -122,7 +122,7 @@ properties:
       rockchip,i2s-tx-route = <3> would mean sdo3 is sending to data0.
     maxItems: 4
     items:
-      - enum: [0, 1, 2, 3]
+      enum: [0, 1, 2, 3]
 
   rockchip,io-multiplex:
     description: