[PATCH v3 4/7] dt-bindings: drm/bridge: anx7625: Add mode-switch support

[Prashant Malani <pmalani@chromium.org>]

Analogix 7625 can be used in systems to switch USB Type-C DisplayPort
alternate mode lane traffic between 2 Type-C ports.

Update the binding to accommodate this usage by introducing a switch
property.

Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Prashant Malani <pmalani@chromium.org>
---

Changes since v2:
- Added Reviewed-by and Tested-by tags.

Changes since v1:
- Introduced patternProperties for "switch" children (suggested by Krzysztof Kozlowski).
- Added unevaluatedProperties descriptor (suggested by Krzysztof Kozlowski).
- Added "address-cells" and "size-cells" properties to "switches".

 .../display/bridge/analogix,anx7625.yaml      | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
index 35a48515836e..cb4a23391244 100644
--- a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
@@ -105,6 +105,33 @@ properties:
       - port@0
       - port@1
 
+  switches:
+    type: object
+    description: Set of switches controlling DisplayPort traffic on
+      outgoing RX/TX lanes to Type C ports.
+    unevaluatedProperties: false
+
+    properties:
+      "#address-cells":
+        const: 1
+
+      "#size-cells":
+        const: 0
+
+    patternProperties:
+      'switch@[01]':
+        $ref: /schemas/usb/typec-switch.yaml#
+
+        properties:
+          reg:
+            maxItems: 1
+
+        required:
+          - reg
+
+    required:
+      - switch@0
+
 required:
   - compatible
   - reg
@@ -167,5 +194,41 @@ examples:
                     };
                 };
             };
+            switches {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                switch@0 {
+                    compatible = "typec-switch";
+                    reg = <0>;
+                    mode-switch;
+
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        port@0 {
+                            reg = <0>;
+                            anx_typec0: endpoint {
+                                remote-endpoint = <&typec_port0>;
+                            };
+                        };
+                    };
+                };
+                switch@1 {
+                    compatible = "typec-switch";
+                    reg = <1>;
+                    mode-switch;
+
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        port@0 {
+                            reg = <0>;
+                            anx_typec1: endpoint {
+                                remote-endpoint = <&typec_port1>;
+                            };
+                        };
+                    };
+                };
+            };
         };
     };
-- 
2.36.1.476.g0c4daa206d-goog