linux-kernel - Re: [PATCH 07/16] arm64: dts: qcom: sm8550-aim300: add PCIe0

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Message-ID: <37a3a407-07e7-49d8-bbce-b1dac8cfcf5a@linaro.org>
Date:   Fri, 17 Nov 2023 12:29:38 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Tengfei Fan <quic_tengfan@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, konrad.dybcio@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        tglx@...utronix.de
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, -cc=kernel@...cinc.com
Subject: Re: [PATCH 07/16] arm64: dts: qcom: sm8550-aim300: add PCIe0

On 17/11/2023 12:18, Tengfei Fan wrote:
> Add PCIe0 nodes used with WCN7851 device.  The PCIe1 is not connected,
> thus skip pcie_1_phy_aux_clk input clock to GCC.
> 
> Signed-off-by: Tengfei Fan <quic_tengfan@...cinc.com>
> ---
>   arch/arm64/boot/dts/qcom/sm8550-aim300.dts | 32 ++++++++++++++++++++++
>   1 file changed, 32 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8550-aim300.dts b/arch/arm64/boot/dts/qcom/sm8550-aim300.dts
> index 202b979da8ca..3aca0a433a00 100644
> --- a/arch/arm64/boot/dts/qcom/sm8550-aim300.dts
> +++ b/arch/arm64/boot/dts/qcom/sm8550-aim300.dts
> @@ -393,6 +393,38 @@
>   	};
>   };
>   
> +&gcc {
> +	clocks = <&bi_tcxo_div2>, <&sleep_clk>,
> +		 <&pcie0_phy>,
> +		 <&pcie1_phy>,
> +		 <0>,
> +		 <&ufs_mem_phy 0>,
> +		 <&ufs_mem_phy 1>,
> +		 <&ufs_mem_phy 2>,
> +		 <&usb_dp_qmpphy QMP_USB43DP_USB3_PIPE_CLK>;
> +};

NAK, this should go to sm8550.dtsi unless there is a good reason.

> +
> +&pcie_1_phy_aux_clk {
> +	status = "disabled";
> +};
> +
> +&pcie0 {
> +	perst-gpios = <&tlmm 94 GPIO_ACTIVE_LOW>;
> +	wake-gpios = <&tlmm 96 GPIO_ACTIVE_HIGH>;
> +
> +	pinctrl-0 = <&pcie0_default_state>;
> +	pinctrl-names = "default";
> +
> +	status = "okay";
> +};
> +
> +&pcie0_phy {
> +	vdda-phy-supply = <&vreg_l1e_0p88>;
> +	vdda-pll-supply = <&vreg_l3e_1p2>;
> +
> +	status = "okay";
> +};
> +
>   &pm8550b_eusb2_repeater {
>   	vdd18-supply = <&vreg_l15b_1p8>;
>   	vdd3-supply = <&vreg_l5b_3p1>;

-- 
With best wishes
Dmitry