dt-bindings: display: panel: document Atrix 4G and Droid X2 DSI panel

Atrix 4G and Droid X2 are based on a board called by Motorola "Mot" and
use the same 540x960 DSI video mode panel. Exact panel vendor and model
are unknown hence generic compatible based on board name "Mot" is used.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260223064630.12720-2-clamor95@gmail.com

Documentation/devicetree/bindings/display/panel/motorola,mot-panel.yaml

@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/motorola,mot-panel.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atrix 4G and Droid X2 DSI Display Panel
+
+maintainers:
+  - Svyatoslav Ryhel <clamor95@gmail.com>
+
+description:
+  Atrix 4G and Droid X2 use the same 540x960 DSI video mode panel. Exact
+  panel vendor and model are unknown hence generic compatible based on the
+  board name "Mot" is used.
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: motorola,mot-panel
+
+  reg:
+    maxItems: 1
+
+  vdd-supply:
+    description: Regulator for main power supply.
+
+  vddio-supply:
+    description: Regulator for 1.8V IO power supply.
+
+  backlight: true
+  reset-gpios: true
+  port: true
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "motorola,mot-panel";
+            reg = <0>;
+
+            reset-gpios = <&gpio 35 GPIO_ACTIVE_LOW>;
+
+            vdd-supply = <&vdd_5v0_panel>;
+            vddio-supply = <&vdd_1v8_vio>;
+
+            backlight = <&backlight>;
+
+            port {
+                panel_in: endpoint {
+                    remote-endpoint = <&dsi_out>;
+                };
+            };
+        };
+    };
+...