linux-kernel - Re: [PATCH 1/7] dt-bindings: phy: qcom,sc8280xp-qmp-usb43dp: Add ports and orientation-switch

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Date:   Wed, 26 Apr 2023 11:21:29 +0100
From:   "Bryan O'Donoghue" <pure.logic@...us-software.ie>
To:     Bjorn Andersson <quic_bjorande@...cinc.com>
Cc:     Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Johan Hovold <johan@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/7] dt-bindings: phy: qcom,sc8280xp-qmp-usb43dp: Add
 ports and orientation-switch

On Tue, Apr 25, 2023 at 4:40 AM Bjorn Andersson
<quic_bjorande@...cinc.com> wrote:
>
> The QMP combo phy can be connected to a TCPM, a USB controller and a
> DisplayPort controller for handling USB Type-C orientation switching
> and propagating HPD signals.
>
> Extend the binding to allow these connections to be described.
>
> Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
> ---
>  .../phy/qcom,sc8280xp-qmp-usb43dp-phy.yaml    | 51 +++++++++++++++++++
>  1 file changed, 51 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb43dp-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb43dp-phy.yaml
> index 3cd5fc3e8fab..c037ac90ce7f 100644
> --- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb43dp-phy.yaml
> +++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb43dp-phy.yaml
> @@ -60,6 +60,26 @@ properties:
>      description:
>        See include/dt-bindings/dt-bindings/phy/phy-qcom-qmp.h
>
> +  orientation-switch:
> +    description:
> +      Flag the PHY as possible handler of USB Type-C orientation switching
> +    type: boolean
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Output endpoint of the PHY
> +
> +      port@1:
> +        $ref: /schemas/graph.yaml#/$defs/port-base
> +        description: Incoming endpoint from the USB controller

Do you really need this one ?

The controller doesn't process orientation switching.

---
bod