diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9881c.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili9881c.yaml
index d4a2bcce06c5..34a612705e8c 100644
--- a/Documentation/devicetree/bindings/display/panel/ilitek,ili9881c.yaml
+++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9881c.yaml
@@ -31,6 +31,7 @@ properties:
     maxItems: 1
 
   backlight: true
+  port: true
   power-supply: true
   reset-gpios: true
   rotation: true