diff --git a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
index a9e3139fd421..3b5253659e6f 100644
--- a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
+++ b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
@@ -49,6 +49,7 @@ properties:
       - enum:
           - mediatek,mt3611-xsphy
           - mediatek,mt3612-xsphy
+          - mediatek,mt7988-xsphy
       - const: mediatek,xsphy
 
   reg: