diff --git a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
index 6c8c98a82be947c5f6126d7aa5d00b6f8dc04f25..b89e3979057911ab9e669e97e71c16578d9e0150 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
@@ -224,6 +224,8 @@ properties:
       - okaya,rs800480t-7x0gp
         # Olimex 4.3" TFT LCD panel
       - olimex,lcd-olinuxino-43-ts
+        # On Tat Industrial Company 5" DPI TFT panel.
+      - ontat,kd50g21-40nt-a1
         # On Tat Industrial Company 7" DPI TFT panel.
       - ontat,yx700wv03
         # OrtusTech COM37H3M05DTC Blanview 3.7" VGA portrait TFT-LCD panel