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Message-ID: <49258bcf-da13-78a9-8ea6-4fc7bd9a4b1d@linaro.org>
Date:   Wed, 7 Jun 2023 20:35:09 +0200
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Subject: Re: [PATCH 7/9] arm64: dts: qcom: ipq5332: Add USB related nodes
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To:     Varadarajan Narayanan <quic_varada@quicinc.com>, agross@kernel.org,
        andersson@kernel.org, konrad.dybcio@linaro.org, vkoul@kernel.org,
        kishon@kernel.org, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
        gregkh@linuxfoundation.org, catalin.marinas@arm.com,
        will@kernel.org, mturquette@baylibre.com, sboyd@kernel.org,
        p.zabel@pengutronix.de, arnd@arndb.de, geert+renesas@glider.be,
        neil.armstrong@linaro.org, nfraprado@collabora.com,
        broonie@kernel.org, rafal@milecki.pl, quic_srichara@quicinc.com,
        quic_varada@quicinc.org, quic_wcheng@quicinc.com,
        linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-clk@vger.kernel.org
References: <cover.1686126439.git.quic_varada@quicinc.com>
 <1b48e737aa14f5b5539cbf04d473182121d5b1ad.1686126439.git.quic_varada@quicinc.com>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
In-Reply-To: <1b48e737aa14f5b5539cbf04d473182121d5b1ad.1686126439.git.quic_varada@quicinc.com>
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On 07/06/2023 12:56, Varadarajan Narayanan wrote:
> Add USB phy and controller nodes
> 
> Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
> ---
>  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 c2d6cc65..3183357 100644
> --- a/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> @@ -383,6 +383,61 @@
>  				status = "disabled";
>  			};
>  		};
> +
> +		usb_0_m31phy: hs_m31phy@7b000 {

Node names should be generic. See also explanation and list of examples
in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +			compatible = "qcom,ipq5332-m31-usb-hsphy";
> +			reg = <0x0007b000 0x12C>,
> +			      <0x08af8800 0x400>;

Lowercase hex only.

> +			reg-names = "m31usb_phy_base",
> +				    "qscratch_base";
> +			phy_type= "utmi";
> +
> +			resets = <&gcc GCC_QUSB2_0_PHY_BCR>;
> +			reset-names = "usb2_phy_reset";
> +
> +			status = "okay";

It's by default. Drop.

> +		};
> +
> +		usb2: usb2@8a00000 {

It does not look like you tested the DTS against bindings. Please run
`make dtbs_check` (see
Documentation/devicetree/bindings/writing-schema.rst for instructions).

Node names should be generic. See also explanation and list of examples
in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +			compatible = "qcom,ipq5332-dwc3", "qcom,dwc3";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges;
> +
> +			reg = <0x08af8800 0x100>;

reg is always after compatible. Ranges is third. Then you will spot that
address is wrong.

> +
> +			clocks = <&gcc GCC_USB0_MASTER_CLK>,
> +				<&gcc GCC_SNOC_USB_CLK>,
> +				<&gcc GCC_USB0_SLEEP_CLK>,
> +				<&gcc GCC_USB0_MOCK_UTMI_CLK>;

Fix alignment.

> +
> +			clock-names = "core",
> +				"iface",
> +				"sleep",
> +				"mock_utmi";

Fix alignment.

> +
> +			interrupts-extended = <&intc GIC_SPI 134 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "pwr_event";
> +


Best regards,
Krzysztof