dt-bindings: drm/bridge: anx7625: MIPI to DP transmitter DT schema

anx7625: MIPI to DP transmitter DT schema
Signed-off-by: Xin Ji <xji@analogixsemi.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/bafa02aa50c5c29b3336ca6930c406150a3c60d2.1600423932.git.xji@analogixsemi.com

Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 Analogix Semiconductor, Inc.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/display/bridge/analogix,anx7625.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Analogix ANX7625 SlimPort (4K Mobile HD Transmitter)
+
+maintainers:
+  - Xin Ji <xji@analogixsemi.com>
+
+description: |
+  The ANX7625 is an ultra-low power 4K Mobile HD Transmitter
+  designed for portable devices.
+
+properties:
+  compatible:
+    items:
+      - const: analogix,anx7625
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    description: used for interrupt pin B8.
+    maxItems: 1
+
+  enable-gpios:
+    description: used for power on chip control, POWER_EN pin D2.
+    maxItems: 1
+
+  reset-gpios:
+    description: used for reset chip control, RESET_N pin B7.
+    maxItems: 1
+
+  ports:
+    type: object
+
+    properties:
+      port@0:
+        type: object
+        description:
+          Video port for MIPI DSI input.
+
+      port@1:
+        type: object
+        description:
+          Video port for panel or connector.
+
+    required:
+        - port@0
+        - port@1
+
+required:
+  - compatible
+  - reg
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        encoder@58 {
+            compatible = "analogix,anx7625";
+            reg = <0x58>;
+            enable-gpios = <&pio 45 GPIO_ACTIVE_HIGH>;
+            reset-gpios = <&pio 73 GPIO_ACTIVE_HIGH>;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                mipi2dp_bridge_in: port@0 {
+                    reg = <0>;
+                    anx7625_in: endpoint {
+                        remote-endpoint = <&mipi_dsi>;
+                    };
+                };
+
+                mipi2dp_bridge_out: port@1 {
+                    reg = <1>;
+                    anx7625_out: endpoint {
+                        remote-endpoint = <&panel_in>;
+                    };
+                };
+            };
+        };
+    };