dt-bindings: display: panel: Document Renesas R69328 based DSI panel

R69328 is liquid crystal driver for high-definition amorphous silicon
(a-Si) panels and is ideal for tablets and smartphones.

Signed-off-by: Svyatoslav Ryhel <[e-mail]>
Reviewed-by: Rob Herring (Arm) <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Baryshkov <[e-mail]>

Documentation/devicetree/bindings/display/panel/renesas,r69328.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/renesas,r69328.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R69328 based DSI Display Panel
+
+maintainers:
+  - Svyatoslav Ryhel <[e-mail]>
+
+description:
+  The Renesas R69328 is a generic DSI Panel IC used to control LCD panels.
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+            # JDI DX12D100VM0EAA 4.7" WXGA TFT LCD panel
+          - jdi,dx12d100vm0eaa
+      - const: renesas,r69328
+
+  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
+  - port
+  - backlight
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@1 {
+            compatible = "jdi,dx12d100vm0eaa", "renesas,r69328";
+            reg = <1>;
+
+            reset-gpios = <&gpio 176 GPIO_ACTIVE_LOW>;
+
+            vdd-supply = <&vdd_3v0_lcd>;
+            vddio-supply = <&vdd_1v8_io>;
+
+            backlight = <&backlight>;
+
+            port {
+                panel_in: endpoint {
+                    remote-endpoint = <&dsi_out>;
+                };
+            };
+        };
+    };
+...