diff --git a/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml b/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml
index 6a89b479d10fad3c8b61cab5a3af1453baca4d1a..1a8c5748a28da6ad8aa091f8c0a74bc1dc709644 100644
--- a/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml
+++ b/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml
@@ -224,6 +224,13 @@ properties:
     description:
       Pin controller
 
+  accdet:
+    type: object
+    $ref: /schemas/sound/mediatek,mt6359-accdet.yaml
+    unevaluatedProperties: false
+    description:
+      Accessory Detection
+
 required:
   - compatible
   - regulators