diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
index 763c62323a74c117ff4e5bb928bfee6b5d8fa2a2..b31d90dc9eb43b104bb62f383c80bb2fe2819679 100644
--- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
+++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
@@ -29,6 +29,7 @@ properties:
               - mediatek,mt8167-mmsys
               - mediatek,mt8173-mmsys
               - mediatek,mt8183-mmsys
+              - mediatek,mt8186-mmsys
               - mediatek,mt8192-mmsys
               - mediatek,mt8365-mmsys
           - const: syscon