linux-kernel - Re: [PATCH 6/9] arm64: dts: qcom: ipq5332: Add USB3 related nodes

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Date:   Tue, 29 Aug 2023 17:46:41 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Praveenkumar I <quic_ipkumar@...cinc.com>
Cc:     robert.marko@...tura.hr, luka.perkov@...tura.hr, 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, arnd@...db.de,
        geert+renesas@...der.be, nfraprado@...labora.com, rafal@...ecki.pl,
        peng.fan@....com, quic_wcheng@...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,
        quic_varada@...cinc.com
Subject: Re: [PATCH 6/9] arm64: dts: qcom: ipq5332: Add USB3 related nodes

On Tue, 29 Aug 2023 at 17:00, Praveenkumar I <quic_ipkumar@...cinc.com> wrote:
>
> Add SS UNIPHY and update controller node for USB3.
>
> Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> ---
> This patch depends on the below series which adds support for USB2 in
> IPQ5332
> https://lore.kernel.org/all/cover.1692699472.git.quic_varada@quicinc.com/
>
>  arch/arm64/boot/dts/qcom/ipq5332.dtsi | 39 ++++++++++++++++++++++-----
>  1 file changed, 32 insertions(+), 7 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/ipq5332.dtsi b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> index e6baf694488c..7fbe6c9f4784 100644
> --- a/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> @@ -158,6 +158,27 @@ usbphy0: phy@...00 {
>                         status = "disabled";
>                 };
>
> +               ssuniphy0: ssuniphy@...000 {
> +                       compatible = "qcom,ipq5332-usb-ssphy";
> +                       reg = <0x4b0000 0x800>;
> +                       clocks = <&gcc GCC_USB0_PIPE_CLK>,
> +                                <&gcc GCC_USB0_PHY_CFG_AHB_CLK>,
> +                                <&gcc GCC_PCIE3X1_PHY_AHB_CLK>;
> +
> +                       #clock-cells = <0>;
> +                       clock-output-names = "usb_pcie_wrapper_pipe_clk";
> +
> +                       clock-names = "pipe",
> +                                     "phy_cfg_ahb",
> +                                     "phy_ahb";
> +
> +                       resets =  <&gcc GCC_USB0_PHY_BCR>;
> +                       reset-names = "por_rst";
> +                       #phy-cells = <0>;
> +                       qcom,phy-mux-sel = <&tcsr 0x10540 0x1>;
> +                       status = "disabled";
> +               };
> +
>                 qfprom: efuse@...00 {
>                         compatible = "qcom,ipq5332-qfprom", "qcom,qfprom";
>                         reg = <0x000a4000 0x721>;
> @@ -313,30 +334,34 @@ usb: usb@...0000 {
>                         clocks = <&gcc GCC_USB0_MASTER_CLK>,
>                                  <&gcc GCC_SNOC_USB_CLK>,
>                                  <&gcc GCC_USB0_SLEEP_CLK>,
> -                                <&gcc GCC_USB0_MOCK_UTMI_CLK>;
> +                                <&gcc GCC_USB0_MOCK_UTMI_CLK>,
> +                                <&gcc GCC_USB0_AUX_CLK>,
> +                                <&gcc GCC_USB0_LFPS_CLK>;
> +
>                         clock-names = "core",
>                                       "iface",
>                                       "sleep",
> -                                     "mock_utmi";
> +                                     "mock_utmi",
> +                                     "aux",
> +                                     "lfps";
>
>                         resets = <&gcc GCC_USB_BCR>;
>
> -                       qcom,select-utmi-as-pipe-clk;
> -
>                         #address-cells = <1>;
>                         #size-cells = <1>;
>                         ranges;
>
>                         status = "disabled";
>
> -                       usb2_0_dwc: usb@...0000 {
> +                       usb3_0_dwc: usb@...0000 {

At this point you have broken compilation of all ipq5332 DT files.
Don't. The kernel should be bisectable. At each point, after each
commit it should compile and work.

>                                 compatible = "snps,dwc3";
>                                 reg = <0x08a00000 0xe000>;
>                                 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>, <&ssuniphy0>;
> +
>                                 tx-fifo-resize;
>                                 snps,is-utmi-l1-suspend;
>                                 snps,hird-threshold = /bits/ 8 <0x0>;
> --
> 2.34.1
>


-- 
With best wishes
Dmitry