[PATCH v6 3/7] dt-bindings: drm/bridge: anx7625: Add mode-switch support

[Pin-yen Lin]

Analogix 7625 can be used in systems to switch the DP traffic between
two downstreams, which can be USB Type-C DisplayPort alternate mode
lane or regular DisplayPort output ports.

Update the binding to accommodate this usage by introducing a
data-lanes and a mode-switch property on endpoints.

Also include the link to the product brief in the bindings.

Signed-off-by: Pin-yen Lin <treapking at chromium.org>

---

Changes in v6:
- Remove switches node and use endpoints and data-lanes property to
  describe the connections.

 .../display/bridge/analogix,anx7625.yaml      | 73 ++++++++++++++++++-
 1 file changed, 71 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
index 4590186c4a0b..5fdbf1f3bab8 100644
--- a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
@@ -12,7 +12,8 @@ maintainers:
 
 description: |
   The ANX7625 is an ultra-low power 4K Mobile HD Transmitter
-  designed for portable devices.
+  designed for portable devices. Product brief is available at
+  https://www.analogix.com/en/system/files/AA-002291-PB-6-ANX7625_ProductBrief.pdf
 
 properties:
   compatible:
@@ -112,10 +113,36 @@ properties:
               data-lanes: true
 
       port at 1:
-        $ref: /schemas/graph.yaml#/properties/port
+        $ref: /schemas/graph.yaml#/properties/port-base
         description:
           Video port for panel or connector.
 
+        patternProperties:
+          "^endpoint@[01]$":
+            $ref: /schemas/media/video-interfaces.yaml#
+            type: object
+            unevaluatedProperties: false
+
+            properties:
+              reg:
+                maxItems: 1
+
+              remote-endpoint: true
+
+              data-lanes:
+                minItems: 1
+                uniqueItems: true
+                items:
+                  - enum: [ 0, 1, 2, 3]
+
+              mode-switch:
+                type: boolean
+                description: Register this node as a Type-C mode switch or not.
+
+            required:
+              - reg
+              - remote-endpoint
+
     required:
       - port at 0
       - port at 1
@@ -186,3 +213,45 @@ examples:
             };
         };
     };
+  - |
+    &i2c3 {
+	anx_bridge_dp: anx7625-dp at 58 {
+	    compatible = "analogix,anx7625";
+	    reg = <0x58>;
+	    pinctrl-names = "default";
+	    pinctrl-0 = <&anx7625_dp_pins>;
+	    enable-gpios = <&pio 176 GPIO_ACTIVE_HIGH>;
+	    reset-gpios = <&pio 177 GPIO_ACTIVE_HIGH>;
+	    vdd10-supply = <&pp1100_dpbrdg>;
+	    vdd18-supply = <&pp1800_dpbrdg_dx>;
+	    vdd33-supply = <&pp3300_dpbrdg_dx>;
+	    analogix,audio-enable;
+
+	    ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port at 0 {
+		    reg = <0>;
+		    anx7625_dp_in: endpoint {
+			bus-type = <7>;
+			remote-endpoint = <&dpi_out>;
+		    };
+		};
+
+		port at 1 {
+		    reg = <1>;
+		    anx_typec0: endpoint at 0 {
+			mode-switch;
+			data-lanes = <0 1>;
+			remote-endpoint = <&typec_port0>;
+		    };
+		    anx_typec1: endpoint at 1 {
+			mode-switch;
+			data-lanes = <2 3>;
+			remote-endpoint = <&typec_port1>;
+		    };
+		};
+	    };
+	};
+    };
-- 
2.38.1.584.g0f3c55d4c2-goog