[PATCH v7 4/9] dt-bindings: drm/bridge: anx7625: Add mode-switch support

From: Pin-yen Lin
Date: Thu Jan 05 2023 - 08:26:30 EST


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@xxxxxxxxxxxx>

---

Changes in v7:
- Fixed issues reported by dt_binding_check
- Updated the schema and the example dts for data-lanes.
- Changed to generic naming for the example dts node.

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

.../display/bridge/analogix,anx7625.yaml | 101 +++++++++++++++++-
1 file changed, 98 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
index 4590186c4a0b..536dbe8eaf60 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 +113,50 @@ properties:
data-lanes: true

port@1:
- $ref: /schemas/graph.yaml#/properties/port
+ $ref: /schemas/graph.yaml#/$defs/port-base
description:
Video port for panel or connector.

+ patternProperties:
+ "^endpoint@[01]$":
+ $ref: /schemas/graph.yaml#/$defs/endpoint-base
+ unevaluatedProperties: false
+
+ properties:
+ reg:
+ maxItems: 1
+
+ remote-endpoint: true
+
+ data-lanes:
+ oneOf:
+ - minItems: 1
+ maxItems: 1
+ items:
+ enum: [0, 1, 2, 3]
+
+ - items:
+ - const: 0
+ - const: 1
+
+ - items:
+ - const: 2
+ - const: 3
+
+ - items:
+ - const: 0
+ - const: 1
+ - const: 2
+ - const: 3
+
+ mode-switch:
+ type: boolean
+ description: Register this node as a Type-C mode switch or not.
+
+ required:
+ - reg
+ - remote-endpoint
+
required:
- port@0
- port@1
@@ -164,8 +205,12 @@ examples:
};

mipi2dp_bridge_out: port@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
reg = <1>;
- anx7625_out: endpoint {
+ anx7625_out: endpoint@0 {
+ reg = <0>;
remote-endpoint = <&panel_in>;
};
};
@@ -186,3 +231,53 @@ examples:
};
};
};
+ - |
+ i2c3 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ encoder@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@0 {
+ reg = <0>;
+ anx7625_dp_in: endpoint {
+ bus-type = <7>;
+ remote-endpoint = <&dpi_out>;
+ };
+ };
+
+ port@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ reg = <1>;
+ anx_typec0: endpoint@0 {
+ reg = <0>;
+ mode-switch;
+ data-lanes = <0 1>;
+ remote-endpoint = <&typec_port0>;
+ };
+ anx_typec1: endpoint@1 {
+ reg = <1>;
+ mode-switch;
+ data-lanes = <2 3>;
+ remote-endpoint = <&typec_port1>;
+ };
+ };
+ };
+ };
+ };
--
2.39.0.314.g84b9a713c41-goog