[PATCH RFC 1/2] dt-bindings: phy: rockchip-usbdp: add improved ports scheme
From: Sebastian Reichel <hidden>
Date: 2025-09-04 18:26:12
Also in:
linux-arm-kernel, linux-devicetree, linux-rockchip, lkml
Subsystem:
generic phy framework, open firmware and flattened device tree bindings, the rest · Maintainers:
Vinod Koul, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Currently the Rockchip USBDP PHY as a very simply port scheme: It just offers a single port, which is supposed to point towards the connector. Usually with 2 endpoints, one for the USB-C superspeed port and one for the USB-C SBU port. This scheme is not good enough to properly handle DP AltMode, so add a new scheme, which has separate ports for everything. This has been modelled after the Qualcomm QMP USB4-USB3-DP PHY controller binding with a slight difference that there is an additional port for the USB-C SBU port as the Rockchip USB-DP PHY also contains the mux. Signed-off-by: Sebastian Reichel <redacted> --- .../bindings/phy/phy-rockchip-usbdp.yaml | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+)
diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-usbdp.yaml b/Documentation/devicetree/bindings/phy/phy-rockchip-usbdp.yaml
index 8b7059d5b1826fdec5170cf78d6e27f2bd6766bb..f728acf057e4046a4d254ee687af3451f17bcd01 100644
--- a/Documentation/devicetree/bindings/phy/phy-rockchip-usbdp.yaml
+++ b/Documentation/devicetree/bindings/phy/phy-rockchip-usbdp.yaml@@ -114,6 +114,29 @@ properties: A port node to link the PHY to a TypeC controller for the purpose of handling orientation switching. + ports: + $ref: /schemas/graph.yaml#/properties/ports + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: + Output endpoint of the PHY for USB (or DP when configured into 4 lane + mode), which should point to the superspeed port of a USB connector. + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: Incoming endpoint from the USB controller + + port@2: + $ref: /schemas/graph.yaml#/properties/port + description: Incoming endpoint from the DisplayPort controller + + port@3: + $ref: /schemas/graph.yaml#/properties/port + description: + Output endpoint of the PHY for DP, which should either point to the + SBU port of a USB-C connector or a DisplayPort connector input port. + required: - compatible - reg
--
2.50.1
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