dt-bindings: display: panel: samsung,atna33xc20: Document ATNA45AF01

The Samsung ATNA45AF01 panel is an AMOLED eDP panel that has backlight
control over the DP AUX channel. While it works almost correctly with the
generic "edp-panel" compatible, the backlight needs special handling to
work correctly. It is similar to the existing ATNA33XC20 panel, just with
a larger resolution and size.

Add a new "samsung,atna45af01" compatible to describe this panel in the DT.
Use the existing "samsung,atna33xc20" as fallback compatible since existing
drivers should work as-is, given that resolution and size are discoverable
through the eDP link.

Signed-off-by: Stephan Gerhold <[email protected]>
Acked-by: Conor Dooley <[email protected]>
Reviewed-by: Neil Armstrong <[email protected]>
Reviewed-by: Douglas Anderson <[email protected]>
Signed-off-by: Douglas Anderson <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: stephan-gh

Documentation/devicetree/bindings/display/panel/samsung,atna33xc20.yaml

@@ -14,7 +14,13 @@ allOf:
 
 properties:
   compatible:
-    const: samsung,atna33xc20
+    oneOf:
+      # Samsung 13.3" FHD (1920x1080 pixels) eDP AMOLED panel
+      - const: samsung,atna33xc20
+      # Samsung 14.5" WQXGA+ (2880x1800 pixels) eDP AMOLED panel
+      - items:
+          - const: samsung,atna45af01
+          - const: samsung,atna33xc20
 
   enable-gpios: true
   port: true