linux-kernel - Re: [PATCH 3/3] arm64: dts: qcom: sm6115: Add USB SS qmp phy node

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Date:   Tue, 13 Dec 2022 13:56:09 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Bhupesh Sharma <bhupesh.sharma@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org
Cc:     agross@...nel.org, bhupesh.linux@...il.com,
        linux-kernel@...r.kernel.org, robh+dt@...nel.org,
        konrad.dybcio@...aro.org, andersson@...nel.org
Subject: Re: [PATCH 3/3] arm64: dts: qcom: sm6115: Add USB SS qmp phy node

On 13/12/2022 13:38, Bhupesh Sharma wrote:
> Add USB superspeed qmp phy node to dtsi.
> 
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sm6115.dtsi | 38 ++++++++++++++++++++++++++--
>  1 file changed, 36 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm6115.dtsi b/arch/arm64/boot/dts/qcom/sm6115.dtsi
> index e4ce135264f3d..9c5c024919f92 100644
> --- a/arch/arm64/boot/dts/qcom/sm6115.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm6115.dtsi
> @@ -579,6 +579,40 @@ usb_hsphy: phy@...3000 {
>  			status = "disabled";
>  		};
>  
> +		usb_qmpphy: phy@...5000 {
> +			compatible = "qcom,sm6115-qmp-usb3-phy";
> +			reg = <0x01615000 0x200>;
> +			#clock-cells = <1>;
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges;
> +			clocks = <&gcc GCC_USB3_PRIM_PHY_COM_AUX_CLK>,
> +				 <&gcc GCC_USB3_PRIM_CLKREF_CLK>,
> +				 <&gcc GCC_AHB2PHY_USB_CLK>;
> +			clock-names = "com_aux",
> +				      "ref",
> +				      "cfg_ahb";
> +			resets = <&gcc GCC_USB3_PHY_PRIM_SP0_BCR>,
> +				 <&gcc GCC_USB3PHY_PHY_PRIM_SP0_BCR>;
> +			reset-names = "phy", "phy_phy";
> +			status = "disabled";

Hm, you add a disabled PHY which is used by existing controller. The
controller is enabled in board DTS, but new PHY node isn't. Aren't you
now breaking it?

> +
> +			usb_ssphy: phy@...5200 {
> +				reg = <0x01615200 0x200>,
> +				      <0x01615400 0x200>,
> +				      <0x01615c00 0x400>,
> +				      <0x01615600 0x200>,
> +				      <0x01615800 0x200>,
> +				      <0x01615a00 0x100>;
> +				#phy-cells = <0>;
> +				#clock-cells = <1>;
> +				clocks = <&gcc GCC_USB3_PRIM_PHY_PIPE_CLK>;
> +				clock-names = "pipe0";
> +				clock-output-names = "usb3_phy_pipe_clk_src";
> +			};
> +		};
> +
> +

Just one blank line.

>  		qfprom@...0000 {
>  			compatible = "qcom,sm6115-qfprom", "qcom,qfprom";
>  			reg = <0x01b40000 0x7000>;
> @@ -1023,8 +1057,8 @@ usb_dwc3: usb@...0000 {
>  				compatible = "snps,dwc3";
>  				reg = <0x04e00000 0xcd00>;
>  				interrupts = <GIC_SPI 255 IRQ_TYPE_LEVEL_HIGH>;
> -				phys = <&usb_hsphy>;
> -				phy-names = "usb2-phy";
> +				phys = <&usb_hsphy>, <&usb_ssphy>;
> +				phy-names = "usb2-phy", "usb3-phy";
>  				iommus = <&apps_smmu 0x120 0x0>;
>  				snps,dis_u2_susphy_quirk;
>  				snps,dis_enblslpm_quirk;

Best regards,
Krzysztof