diff --git a/Documentation/devicetree/bindings/soc/mediatek/mediatek,mutex.yaml b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mutex.yaml
index 9241e5fc7cff..15c133cac315 100644
--- a/Documentation/devicetree/bindings/soc/mediatek/mediatek,mutex.yaml
+++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mutex.yaml
@@ -32,6 +32,7 @@ properties:
       - mediatek,mt8183-disp-mutex
       - mediatek,mt8186-disp-mutex
       - mediatek,mt8186-mdp3-mutex
+      - mediatek,mt8188-disp-mutex
       - mediatek,mt8192-disp-mutex
       - mediatek,mt8195-disp-mutex