based on: https://patchwork.kernel.org/project/linux-mediatek/patch/20211213162856.235130-3-hsinyi@chromium.org/

diff --git a/Documentation/devicetree/bindings/arm/mediatek.yaml b/Documentation/devicetree/bindings/arm/mediatek.yaml
index 723810cffce2e7..75bb06d1802a08 100644
--- a/Documentation/devicetree/bindings/arm/mediatek.yaml
+++ b/Documentation/devicetree/bindings/arm/mediatek.yaml
@@ -175,6 +175,13 @@ properties:
         items:
           - const: google,kappa
           - const: mediatek,mt8183
+      - description: Google Katsu (ASUS Chromebook Detachable CZ1)
+        items:
+          - enum:
+              - google,katsu-sku32
+              - google,katsu-sku38
+          - const: google,katsu
+          - const: mediatek,mt8183
       - description: Google Kodama (Lenovo 10e Chromebook Tablet)
         items:
           - enum:
