linux-kernel - Re: [PATCH v7 3/5] arm64: dts: qcom: ipq5332: Add USB related nodes

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Date:   Mon, 14 Aug 2023 12:01:59 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Varadarajan Narayanan <quic_varada@...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,
        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_srichara@...cinc.com,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v7 3/5] arm64: dts: qcom: ipq5332: Add USB related nodes

On 10/08/2023 11:56, Varadarajan Narayanan wrote:
> Add USB phy and controller nodes.
> 
> Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
> ---
> 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..c45d9d4 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: usb2@...0000 {

usb@

Node names must be generic.

> +			compatible = "qcom,ipq5332-dwc3", "qcom,dwc3";
> +			reg = <0x08af8800 0x400>;

OK, so this was not really checked for any warnings.

It does not look like you tested the DTS against bindings. Please run
`make dtbs_check W=1` (see
Documentation/devicetree/bindings/writing-schema.rst or
https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/
for instructions).


Best regards,
Krzysztof