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Date: Thu, 31 Aug 2023 09:07:11 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Varadarajan Narayanan <quic_varada@...cinc.com>
Cc: agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
conor+dt@...nel.org, catalin.marinas@....com, will@...nel.org,
vkoul@...nel.org, kishon@...nel.org, arnd@...db.de,
geert+renesas@...der.be, nfraprado@...labora.com, rafal@...ecki.pl,
peng.fan@....com, linux-arm-msm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-phy@...ts.infradead.org
Subject: Re: [PATCH v11 2/4] arm64: dts: qcom: ipq5332: Add USB related nodes
On Thu, 31 Aug 2023 at 08:39, Varadarajan Narayanan
<quic_varada@...cinc.com> wrote:
>
> Add USB phy and controller nodes.
>
> Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
> ---
> v10:
> usb@...0000 -> usb@...8800
> "make W=1 ARCH=arm64 -j 16 CHECK_DTBS=y DT_SCHEMA_FILES=qcom,ipq5332-usb-hsphy.yaml dtbs_check" passed
> v9:
> usb2@...0000 -> usb@...0000
> "make ARCH=arm64 -j 16 CHECK_DTBS=y DT_SCHEMA_FILES=qcom,ipq5332-usb-hsphy.yaml dtbs_check" passed
> v6:
> Remove clock names
> Move the nodes to address sorted location
> v5:
> Use generic phy instead of usb-phy
> 'make CHECK_DTBS=y DT_SCHEMA_FILES=qcom dtbs_check' passed
> 'DT_CHECKER_FLAGS='-v -m' DT_SCHEMA_FILES=qcom dt_binding_check' passed
> v4:
> Change node name
> Remove blank line
> 'make CHECK_DTBS=y DT_SCHEMA_FILES=qcom qcom/ipq5332-rdp441.dtb' passed
> v1:
> Rename phy node
> Change compatible from m31,ipq5332-usb-hsphy -> qcom,ipq5332-usb-hsphy
> Remove 'qscratch' from phy node
> Fix alignment and upper-case hex no.s
> Add clock definition for the phy
> Remove snps,ref-clock-period-ns as it is not used. dwc3_ref_clk_period()
> in dwc3/core.c takes the frequency from ref clock and calculates fladj
> as appropriate.
> ---
> arch/arm64/boot/dts/qcom/ipq5332.dtsi | 55 +++++++++++++++++++++++++++++++++++
> 1 file changed, 55 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/ipq5332.dtsi b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> index 8bfc2db..6593865 100644
> --- a/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> @@ -145,6 +145,19 @@
> #size-cells = <1>;
> ranges = <0 0 0 0xffffffff>;
>
> + usbphy0: phy@...00 {
> + compatible = "qcom,ipq5332-usb-hsphy";
> + reg = <0x0007b000 0x12c>;
> +
> + clocks = <&gcc GCC_USB0_PHY_CFG_AHB_CLK>;
> +
> + resets = <&gcc GCC_QUSB2_0_PHY_BCR>;
> +
> + #phy-cells = <0>;
> +
> + status = "disabled";
> + };
> +
> qfprom: efuse@...00 {
> compatible = "qcom,ipq5332-qfprom", "qcom,qfprom";
> reg = <0x000a4000 0x721>;
> @@ -290,6 +303,48 @@
> status = "disabled";
> };
>
> + usb: usb@...8800 {
> + compatible = "qcom,ipq5332-dwc3", "qcom,dwc3";
> + reg = <0x08af8800 0x400>;
> +
> + interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "hs_phy_irq";
> +
> + clocks = <&gcc GCC_USB0_MASTER_CLK>,
> + <&gcc GCC_SNOC_USB_CLK>,
> + <&gcc GCC_USB0_SLEEP_CLK>,
> + <&gcc GCC_USB0_MOCK_UTMI_CLK>;
> + clock-names = "core",
> + "iface",
> + "sleep",
> + "mock_utmi";
> +
> + 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 {
Since we have just seen a patch series adding USB 3 support to
ipq5332, we know that the host is not 2.0-only. Thus the `2_0` part of
the label doesn't make sense.
Could you please change the label to be just usb_dwc (or usb0_dwc)?
> + 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>;
> + tx-fifo-resize;
> + snps,is-utmi-l1-suspend;
> + snps,hird-threshold = /bits/ 8 <0x0>;
> + snps,dis_u2_susphy_quirk;
> + snps,dis_u3_susphy_quirk;
> + };
> + };
> +
> intc: interrupt-controller@...0000 {
> compatible = "qcom,msm-qgic2";
> reg = <0x0b000000 0x1000>, /* GICD */
> --
> 2.7.4
>
--
With best wishes
Dmitry
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