[PATCH v2 1/2] Documentation: bindings: Add ANX7688 HDMI to DP bridge binding

[Enric Balletbo i Serra <enric.balletbo@collabora.com>]

From: Nicolas Boichat <drinkcat@chromium.org>

Add documentation for DT properties supported by anx7688 HDMI-DP
converter.

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
---

Changes in v2:
- Improve a bit the descriptions using the info from the datasheet.
- Convert binding to yaml.
- Use dual licensing.

 .../bindings/display/bridge/anx7688.yaml      | 79 +++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/anx7688.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/anx7688.yaml b/Documentation/devicetree/bindings/display/bridge/anx7688.yaml
new file mode 100644
index 000000000000..c1b4b5191d44
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/anx7688.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/anx7688.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analogix ANX7688 HDMI to USB Type-C Bridge (Port Controller with MUX)
+
+maintainers:
+  - Nicolas Boichat <drinkcat@chromium.org>
+  - Enric Balletbo i Serra <enric.balletbo@collabora.com>
+
+description: |
+  The ANX7688 is a single-chip mobile transmitter to support 4K 60 frames per
+  second (4096x2160p60) or FHD 120 frames per second (1920x1080p120) video
+  resolution from a smartphone or tablet with full function USB-C.
+
+  This binding only describes the HDMI to DP display bridge.
+
+properties:
+  compatible:
+    const: analogix,anx7688
+
+  reg:
+    maxItems: 1
+    description: I2C address of the device
+
+  ports:
+    type: object
+
+    properties:
+      port@0:
+        type: object
+        description: |
+          Video port for HDMI input
+
+      port@1:
+        type: object
+        description: |
+          Video port for DP output
+
+    required:
+      - port@0
+
+required:
+  - compatible
+  - reg
+  - ports
+
+examples:
+  - |
+    i2c0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        anx7688: dp-bridge@2c {
+            compatible = "analogix,anx7688";
+            reg = <0x2c>;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@0 {
+                    reg = <0>;
+                    anx7866_in: endpoint {
+                        remote-endpoint = <&hdmi0_out>;
+                    };
+                };
+
+                port@1 {
+                    reg = <1>;
+                    anx7866_out: endpoint {
+                        remote-endpoint = <&panel_in>;
+                   };
+                };
+            };
+        };
+    };
-- 
2.25.0