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Subject[PATCH v6 6/7] dt/bindings: drm/bridge: it6505: Add mode-switch support
Date
ITE IT6505 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.

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

---

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

.../bindings/display/bridge/ite,it6505.yaml | 94 ++++++++++++++++++-
1 file changed, 90 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
index 833d11b2303a..b4b9881c7759 100644
--- a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
@@ -52,9 +52,53 @@ properties:
maxItems: 1
description: extcon specifier for the Power Delivery

- port:
- $ref: /schemas/graph.yaml#/properties/port
- description: A port node pointing to DPI host port node
+ data-lanes:
+ maxItems: 1
+ description: restrict the dp output data-lanes with value of 1-4
+
+ max-pixel-clock-khz:
+ maxItems: 1
+ description: restrict max pixel clock
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: A port node pointing to DPI host port node
+
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port-base
+ description:
+ Video port for panel or connector.
+
+ patternProperties:
+ "^endpoint@[01]$":
+ $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:
- compatible
@@ -62,7 +106,7 @@ required:
- pwr18-supply
- interrupts
- reset-gpios
- - extcon
+ - ports

additionalProperties: false

@@ -92,3 +136,45 @@ examples:
};
};
};
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ &i2c3 {
+ clock-frequency = <100000>;
+
+ it6505dptx: it6505dptx@5c {
+ compatible = "ite,it6505";
+ interrupts = <8 IRQ_TYPE_LEVEL_LOW 8 0>;
+ reg = <0x5c>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&it6505_pins>;
+ ovdd-supply = <&mt6366_vsim2_reg>;
+ pwr18-supply = <&pp1800_dpbrdg_dx>;
+ reset-gpios = <&pio 177 0>;
+ hpd-gpios = <&pio 10 0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ port@0 {
+ reg = <0>;
+ it6505_in: endpoint {
+ remote-endpoint = <&dpi_out>;
+ };
+ };
+ port@1 {
+ reg = <1>;
+ ite_typec0: endpoint@0 {
+ mode-switch;
+ data-lanes = <0 1>;
+ remote-endpoint = <&typec_port0>;
+ };
+ ite_typec1: endpoint@1 {
+ mode-switch;
+ data-lanes = <2 3>;
+ remote-endpoint = <&typec_port1>;
+ };
+ };
+ };
+ };
+ };
--
2.38.1.584.g0f3c55d4c2-goog
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