dt-bindings: display: panel: document the Visionox VTDR6130 AMOLED DSI Panel

Document the 1080x2400 Visionox VTDR6130 AMOLED DSI Panel bindings.

Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
[narmstrong: drop last, redundant "bindings" in subject]
Link: https://patchwork.freedesktop.org/patch/msgid/20230103-topic-sm8550-upstream-vtdr6130-panel-v2-1-dd6200f47a76@linaro.org

diff --git a/Documentation/devicetree/bindings/display/panel/visionox,vtdr6130.yaml b/Documentation/devicetree/bindings/display/panel/visionox,vtdr6130.yaml
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+++ b/Documentation/devicetree/bindings/display/panel/visionox,vtdr6130.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/visionox,vtdr6130.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Visionox VTDR6130 AMOLED DSI Panel
+
+maintainers:
+  - Neil Armstrong <neil.armstrong@linaro.org>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    const: visionox,vtdr6130
+
+  vddio-supply: true
+  vci-supply: true
+  vdd-supply: true
+  port: true
+  reset-gpios: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - vddio-supply
+  - vci-supply
+  - vdd-supply
+  - reset-gpios
+  - port
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    panel {
+        compatible = "visionox,vtdr6130";
+
+        vddio-supply = <&vreg_l12b_1p8>;
+        vci-supply = <&vreg_l13b_3p0>;
+        vdd-supply = <&vreg_l11b_1p2>;
+
+        reset-gpios = <&tlmm 133 GPIO_ACTIVE_LOW>;
+
+        port {
+            panel0_in: endpoint {
+                remote-endpoint = <&dsi0_out>;
+            };
+        };
+    };
+...