linux-kernel - Re: [PATCH 6/8] arm64: dts: qcom: ipq5332: Add Super-Speed UNIPHY in USB node

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Message-ID: <cc6e2145-ee6f-4872-9c47-8f618b47dc27@linaro.org>
Date:   Sat, 30 Sep 2023 20:27:33 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Praveenkumar I <quic_ipkumar@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, konrad.dybcio@...aro.org, vkoul@...nel.org,
        kishon@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        gregkh@...uxfoundation.org, catalin.marinas@....com,
        will@...nel.org, p.zabel@...gutronix.de, geert+renesas@...der.be,
        arnd@...db.de, neil.armstrong@...aro.org, nfraprado@...labora.com,
        u-kumar1@...com, peng.fan@....com, quic_wcheng@...cinc.com,
        quic_varada@...cinc.com, linux-arm-msm@...r.kernel.org,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     quic_kathirav@...cinc.com, quic_nsekar@...cinc.com,
        quic_srichara@...cinc.com
Subject: Re: [PATCH 6/8] arm64: dts: qcom: ipq5332: Add Super-Speed UNIPHY in
 USB node

On 29/09/2023 11:42, Praveenkumar I wrote:
> Add UNIPHY node in USB to support Super-speed. As the SS PHY has
> pipe clock, removed "qcom,select-utmi-as-pipe-clk" flag.
> 
> Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> ---
>   arch/arm64/boot/dts/qcom/ipq5332.dtsi | 6 ++----
>   1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq5332.dtsi b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> index 1813b9fa4bb5..8fe4e45bfc18 100644
> --- a/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> @@ -349,8 +349,6 @@ usb: usb@...8800 {
>   
>   			resets = <&gcc GCC_USB_BCR>;
>   
> -			qcom,select-utmi-as-pipe-clk;
> -
>   			#address-cells = <1>;
>   			#size-cells = <1>;
>   			ranges;
> @@ -363,8 +361,8 @@ usb_dwc: usb@...0000 {
>   				clocks = <&gcc GCC_USB0_MOCK_UTMI_CLK>;
>   				clock-names = "ref";
>   				interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
> -				phy-names = "usb2-phy";
> -				phys = <&usbphy0>;
> +				phy-names = "usb2-phy", "usb3-phy";
> +				phys = <&usbphy0>, <&usbphy1>;

Ah, I see now. Maybe usbphy_ss_0 or something like that would be a 
better label for this PHY. I'd expect usbphy1 to be used for other host 
than usbphy0.

>   				tx-fifo-resize;
>   				snps,is-utmi-l1-suspend;
>   				snps,hird-threshold = /bits/ 8 <0x0>;

-- 
With best wishes
Dmitry