linux-kernel - Re: [PATCH v9 1/3] arm64: dts: qcom: sm8750: Add USB support to SM8750 SoCs

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Message-ID: <eczsb4xsrfowfalgjaoy7azkrriitaietkjjkl2smceeasie3j@uc5ynursx3ot>
Date: Tue, 28 Oct 2025 23:14:03 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Krishna Kurapati <krishna.kurapati@....qualcomm.com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Wesley Cheng <wesley.cheng@....qualcomm.com>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: Re: [PATCH v9 1/3] arm64: dts: qcom: sm8750: Add USB support to
 SM8750 SoCs

On Fri, Oct 24, 2025 at 08:45:19PM +0530, Krishna Kurapati wrote:
> From: Wesley Cheng <wesley.cheng@....qualcomm.com>
> 
> SM8750 chipset contains a single DWC3 USB3 controller (rev. 200a), SS
> QMP PHY (rev. v8) and M31 eUSB2 PHY.  The major difference for SM8750 is
> the transition to using the M31 eUSB2 PHY compared to previous SoCs.
> 
> Enable USB support on SM8750 MTP and QRD variants. SM8750 has a QMP combo
> PHY for the SSUSB path, and a M31 eUSB2 PHY for the HSUSB path.
> 
> Signed-off-by: Wesley Cheng <wesley.cheng@....qualcomm.com>
> [Konrad: Provided diff to flattened USB node]
> Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> Signed-off-by: Krishna Kurapati <krishna.kurapati@....qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/sm8750.dtsi | 158 +++++++++++++++++++++++++++
>  1 file changed, 158 insertions(+)
> 
> +
> +		usb_dp_qmpphy: phy@...8000 {

You also need to update gcc clocks properties.

> +			compatible = "qcom,sm8750-qmp-usb3-dp-phy";
> +			reg = <0x0 0x088e8000 0x0 0x4000>;
> +

-- 
With best wishes
Dmitry