linux-kernel - Re: [PATCH v1] arm64: dts: qcom: sc7280: Add PCIe0 node

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Message-ID: <f3d5c72d-90d3-b091-f995-5ad0bf93ae1d@quicinc.com>
Date:   Fri, 28 Jul 2023 20:40:54 +0530
From:   Krishna Chaitanya Chundru <quic_krichai@...cinc.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        <manivannan.sadhasivam@...aro.org>
CC:     <helgaas@...nel.org>, <linux-pci@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <quic_vbadigan@...cinc.com>, <quic_nitegupt@...cinc.com>,
        <quic_skananth@...cinc.com>, <quic_ramkri@...cinc.com>,
        <quic_parass@...cinc.com>,
        "reviewer:ARM/QUALCOMM CHROMEBOOK SUPPORT" 
        <cros-qcom-dts-watchers@...omium.org>,
        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>,
        Conor Dooley <conor+dt@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH v1] arm64: dts: qcom: sc7280: Add PCIe0 node


On 7/28/2023 5:33 PM, Krzysztof Kozlowski wrote:
> On 28/07/2023 12:39, Krishna chaitanya chundru wrote:
>> Add PCIe dtsi node for PCIe0 controller on sc7280 platform.
>>
>> Signed-off-by: Krishna chaitanya chundru <quic_krichai@...cinc.com>
> Thank you for your patch. There is something to discuss/improve.
>
>
>> +		pcie0_phy: phy@...6000 {
>> +			compatible = "qcom,sm8250-qmp-gen3x1-pcie-phy";
>> +			reg = <0 0x01c06000 0 0x1c0>;
>> +			#address-cells = <2>;
>> +			#size-cells = <2>;
>> +			ranges;
>> +			clocks = <&gcc GCC_PCIE_0_AUX_CLK>,
>> +				 <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
>> +				 <&gcc GCC_PCIE_CLKREF_EN>,
>> +				 <&gcc GCC_PCIE0_PHY_RCHNG_CLK>;
>> +			clock-names = "aux", "cfg_ahb", "ref", "refgen";
>> +
>> +			resets = <&gcc GCC_PCIE_0_PHY_BCR>;
>> +			reset-names = "phy";
>> +
>> +			assigned-clocks = <&gcc GCC_PCIE0_PHY_RCHNG_CLK>;
>> +			assigned-clock-rates = <100000000>;
>> +
>> +			status = "disabled";
>> +
>> +			pcie0_lane: phy@...e6200 {
> Isn't this old-style of bindings? Wasn't there a change? On what tree
> did you base it?
Let me rebase and send it again.
>> +
>> +			pcie0_wake_n: pcie0-wake-n {
> It does not look like you tested the DTS against bindings. Please run
> `make dtbs_check` (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).
>
> Nodes end with 'state'.

I will run it send it again.

Thanks,

KC

>
>> +				pins = "gpio89";
>> +				function = "gpio";
>> +
>> +				drive-strength = <2>;
>> +				bias-pull-up;
>> +			};
> Best regards,
> Krzysztof
>