linux-kernel - Re: [PATCH 7/8] arm64: dts: qcom: ipq9574: Add USB related nodes

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Date:   Fri, 3 Mar 2023 08:39:42 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Varadarajan Narayanan <quic_varada@...cinc.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/8] arm64: dts: qcom: ipq9574: Add USB related nodes

On 02/03/2023 10:55, Varadarajan Narayanan wrote:
> Add USB phy and controller related nodes
> 
> Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/ipq9574.dtsi | 92 +++++++++++++++++++++++++++++++++++
>  1 file changed, 92 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> index 2bb4053..319b5bd 100644
> --- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> @@ -215,6 +215,98 @@
>  		#size-cells = <1>;
>  		ranges = <0 0 0 0xffffffff>;
>  
> +		ssphy_0: ssphy@...00 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

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

> +			compatible = "qcom,ipq9574-qmp-usb3-phy";
> +			reg = <0x7D000 0x1C4>;
> +			#clock-cells = <1>;
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges;
> +
> +			clocks = <&gcc GCC_USB0_AUX_CLK>,
> +				 <&gcc GCC_USB0_PHY_CFG_AHB_CLK>;
> +			clock-names = "aux", "cfg_ahb";
> +
> +			resets =  <&gcc GCC_USB0_PHY_BCR>,
> +				 <&gcc GCC_USB3PHY_0_PHY_BCR>;
> +			reset-names = "phy","common";
> +			status = "disabled";
> +
> +			usb0_ssphy: lane@...00 {
> +				reg = <0x0007D200 0x130>,	/* Tx */
> +				      <0x0007D400 0x200>,	/* Rx */
> +				      <0x0007D800 0x1F8>,	/* PCS  */
> +				      <0x0007D600 0x044>;	/* PCS misc */
> +				#phy-cells = <0>;
> +				clocks = <&gcc GCC_USB0_PIPE_CLK>;
> +				clock-names = "pipe0";
> +				clock-output-names = "gcc_usb0_pipe_clk_src";
> +			};
> +		};
> +
> +		qusb_phy_0: qusb@...00 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

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

> +			compatible = "qcom,ipq9574-qusb2-phy";
> +			reg = <0x07B000 0x180>;

Lowercase hex everywhere.

> +			#phy-cells = <0>;
> +
> +			clocks = <&gcc GCC_USB0_PHY_CFG_AHB_CLK>,
> +				<&xo_board_clk>;
> +			clock-names = "cfg_ahb", "ref";
> +
> +			resets = <&gcc GCC_QUSB2_0_PHY_BCR>;
> +			status = "disabled";
> +		};
> +
> +		usb3: usb3@...0000 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

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

> +			compatible = "qcom,dwc3";
> +			reg = <0x8AF8800 0x400>;
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges;
> +
> +			clocks = <&gcc GCC_SNOC_USB_CLK>,
> +				<&gcc GCC_ANOC_USB_AXI_CLK>,
> +				<&gcc GCC_USB0_MASTER_CLK>,
> +				<&gcc GCC_USB0_SLEEP_CLK>,
> +				<&gcc GCC_USB0_MOCK_UTMI_CLK>;
> +
> +			clock-names = "sys_noc_axi",
> +				"anoc_axi",
> +				"master",
> +				"sleep",
> +				"mock_utmi";
> +
> +			assigned-clocks = <&gcc GCC_SNOC_USB_CLK>,
> +					  <&gcc GCC_ANOC_USB_AXI_CLK>,
> +					  <&gcc GCC_USB0_MASTER_CLK>,
> +					  <&gcc GCC_USB0_MOCK_UTMI_CLK>;
> +			assigned-clock-rates = <200000000>,
> +					       <200000000>,
> +					       <200000000>,
> +					       <24000000>;
> +
> +			resets = <&gcc GCC_USB_BCR>;
> +			status = "disabled";
> +
> +			dwc_0: dwc3@...0000 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

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


Best regards,
Krzysztof