diff --git a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
index b3e409988c17..848edfb1f677 100644
--- a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
+++ b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
@@ -163,6 +163,7 @@ patternProperties:
                 - PHY_TYPE_USB3
                 - PHY_TYPE_PCIE
                 - PHY_TYPE_SATA
+                - PHY_TYPE_SGMII
 
       nvmem-cells:
         items: