[PATCH v3 3/4] dt-bindings: Add ANX7688 HDMI to DP bridge binding

[Enric Balletbo i Serra]

From: Nicolas Boichat <drinkcat at chromium.org>

Add documentation for DT properties supported by the ANX7688 HDMI-DP
converter.

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

Changes in v3:
- Adapt the bridge bindings for the multi-function device.

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

 .../bridge/analogix,anx7688-bridge.yaml       | 80 +++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/analogix,anx7688-bridge.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/analogix,anx7688-bridge.yaml b/Documentation/devicetree/bindings/display/bridge/analogix,anx7688-bridge.yaml
new file mode 100644
index 000000000000..c56da3f39dd8
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/analogix,anx7688-bridge.yaml
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/analogix,anx7688-bridge.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analogix ANX7688 HDMI to DisplayPort Bridge
+
+maintainers:
+  - Nicolas Boichat <drinkcat at chromium.org>
+  - Enric Balletbo i Serra <enric.balletbo at collabora.com>
+
+description: |
+  The ANX7688 bridge describes the HDMI 2.0 to DisplayPort 1.3 bridge block
+  included in the ANX7688 chip controller. These are meant to be used for
+  controlling display-related signals.
+
+  The node of this device should be under an analogix,anx7866 node. Please refer
+  to Documentation/devicetree/bindings/mfd/analogix,anx7688.yaml for the ANX7688
+  core bindings.
+
+properties:
+  compatible:
+    const: analogix,anx7688-bridge
+
+  ports:
+    type: object
+
+    properties:
+      port at 0:
+        type: object
+        description: |
+          Video port for HDMI input
+
+      port at 1:
+        type: object
+        description: |
+          Video port for DP output
+
+    required:
+      - port at 0
+
+required:
+  - compatible
+  - ports
+
+examples:
+  - |
+    i2c0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        anx7688: anx7688 at 2c {
+            compatible = "analogix,anx7688";
+            reg = <0x2c>;
+
+            bridge {
+                compatible = "analogix,anx7688-bridge";
+
+                ports {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+
+                    port at 0 {
+                        reg = <0>;
+                        anx7688_in: endpoint {
+                            remote-endpoint = <&hdmi0_out>;
+                        };
+                    };
+
+                    port at 1 {
+                        reg = <1>;
+                        anx7688_out: endpoint {
+                            remote-endpoint = <&typec0_connector>;
+                       };
+                    };
+                };
+            };
+        };
+    };
-- 
2.25.1