diff --git a/Documentation/devicetree/bindings/rng/mtk-rng.yaml b/Documentation/devicetree/bindings/rng/mtk-rng.yaml
index 61888e07bda07512bb9c868fb98e9c67712f77a6..bb32491ee8aeddc6adaca33fa448b0439d8be881 100644
--- a/Documentation/devicetree/bindings/rng/mtk-rng.yaml
+++ b/Documentation/devicetree/bindings/rng/mtk-rng.yaml
@@ -21,6 +21,7 @@ properties:
           - enum:
               - mediatek,mt7622-rng
               - mediatek,mt7629-rng
+              - mediatek,mt7986-rng
               - mediatek,mt8365-rng
               - mediatek,mt8516-rng
           - const: mediatek,mt7623-rng