diff --git a/Documentation/devicetree/bindings/phy/allwinner,sun6i-a31-mipi-dphy.yaml b/Documentation/devicetree/bindings/phy/allwinner,sun6i-a31-mipi-dphy.yaml
index 8841938050b2..0c283fe79402 100644
--- a/Documentation/devicetree/bindings/phy/allwinner,sun6i-a31-mipi-dphy.yaml
+++ b/Documentation/devicetree/bindings/phy/allwinner,sun6i-a31-mipi-dphy.yaml
@@ -18,6 +18,7 @@ properties:
     oneOf:
       - const: allwinner,sun6i-a31-mipi-dphy
       - items:
+          - const: allwinner,sun8i-r40-mipi-dphy
           - const: allwinner,sun50i-a64-mipi-dphy
           - const: allwinner,sun6i-a31-mipi-dphy