This commit adds dt-binding documentation for the MediaTek MT8189
reference board.

Signed-off-by: Sirius Wang <sirius.wang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 Documentation/devicetree/bindings/arm/mediatek.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/mediatek.yaml b/Documentation/devicetree/bindings/arm/mediatek.yaml
index 19ed9448c9c2..5052b6b2dcce 100644
--- a/Documentation/devicetree/bindings/arm/mediatek.yaml
+++ b/Documentation/devicetree/bindings/arm/mediatek.yaml
@@ -382,6 +382,10 @@ properties:
           - enum:
               - mediatek,mt8188-evb
           - const: mediatek,mt8188
+      - items:
+          - enum:
+              - mediatek,mt8189-evb
+          - const: mediatek,mt8189
       - description: Google Hayato
         items:
           - const: google,hayato-rev1
-- 
2.45.2