diff --git a/Documentation/devicetree/bindings/serial/mediatek,uart.yaml b/Documentation/devicetree/bindings/serial/mediatek,uart.yaml
index ff61ffdcad1d..1b02f0b197ff 100644
--- a/Documentation/devicetree/bindings/serial/mediatek,uart.yaml
+++ b/Documentation/devicetree/bindings/serial/mediatek,uart.yaml
@@ -36,6 +36,7 @@ properties:
               - mediatek,mt7622-uart
               - mediatek,mt7623-uart
               - mediatek,mt7629-uart
+              - mediatek,mt7981-uart
               - mediatek,mt7986-uart
               - mediatek,mt7988-uart
               - mediatek,mt8127-uart