linux-kernel - Re: [PATCH v2 2/3] arm64: qcom: sc7280: Move phy, perst to root port node

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Message-ID: <hcficagxw4p6h5nr4non25vuwdyor4nvbff3vxz7z6rgztltxl@vcoi7dacv5wc>
Date: Mon, 14 Apr 2025 11:06:22 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
Cc: Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        cros-qcom-dts-watchers@...omium.org, linux-arm-msm@...r.kernel.org,
        linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, quic_vbadigan@...cinc.com,
        quic_mrana@...cinc.com
Subject: Re: [PATCH v2 2/3] arm64: qcom: sc7280: Move phy, perst to root port
 node

On Mon, Apr 14, 2025 at 11:09:13AM +0530, Krishna Chaitanya Chundru wrote:
> Move phy, perst, to root port from the controller node.
> 
> Rename perst-gpios to reset-gpios to align with the expected naming
> convention of pci-bus-common.yaml.

Note that the cover letter doesn't land in the git history. Anybody
browsing file history would have hard time understanding the reason for
the change.

> 
> Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts   | 5 ++++-
>  arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi | 5 ++++-
>  arch/arm64/boot/dts/qcom/sc7280-idp.dtsi       | 5 ++++-
>  arch/arm64/boot/dts/qcom/sc7280.dtsi           | 6 ++----

I can only hope that after the series is landed, there will be a
followup from you, convering all other platforms.

>  4 files changed, 14 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> index 7a36c90ad4ec8b52f30b22b1621404857d6ef336..3dd58986ad5da0f898537a51715bb5d0fecbe100 100644
> --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> @@ -709,8 +709,11 @@ &mdss_edp_phy {
>  	status = "okay";
>  };
>  
> +&pcie1_port0 {
> +	reset-gpios = <&tlmm 2 GPIO_ACTIVE_LOW>;
> +};
> +
>  &pcie1 {
> -	perst-gpios = <&tlmm 2 GPIO_ACTIVE_LOW>;
>  
>  	pinctrl-0 = <&pcie1_reset_n>, <&pcie1_wake_n>;
>  	pinctrl-names = "default";
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> index 2ba4ea60cb14736c9cfbf9f4a9048f20a4c921f2..ff11d85d015bdab6a90bd8a0eb9113a339866953 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> @@ -472,10 +472,13 @@ &pcie1 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&pcie1_clkreq_n>, <&ssd_rst_l>, <&pe_wake_odl>;
>  
> -	perst-gpios = <&tlmm 2 GPIO_ACTIVE_LOW>;
>  	vddpe-3v3-supply = <&pp3300_ssd>;
>  };
>  
> +&pcie1_port0 {
> +	reset-gpios = <&tlmm 2 GPIO_ACTIVE_LOW>;
> +};
> +
>  &pm8350c_pwm {
>  	status = "okay";
>  };
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
> index 7370aa0dbf0e3f9e7a3e38c3f00686e1d3dcbc9f..3209bb15dfec36299cabae07d34f3dc82db6de77 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
> @@ -414,9 +414,12 @@ &lpass_va_macro {
>  	vdd-micb-supply = <&vreg_bob>;
>  };
>  
> +&pcie1_port0 {
> +	reset-gpios = <&tlmm 2 GPIO_ACTIVE_LOW>;
> +};
> +
>  &pcie1 {
>  	status = "okay";
> -	perst-gpios = <&tlmm 2 GPIO_ACTIVE_LOW>;
>  
>  	vddpe-3v3-supply = <&nvme_3v3_regulator>;
>  
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 0f2caf36910b65c398c9e03800a8ce0a8a1f8fc7..376fabf3b4eac34d75bb79ef902c9d83490c45f7 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -2271,9 +2271,6 @@ pcie1: pcie@...8000 {
>  
>  			power-domains = <&gcc GCC_PCIE_1_GDSC>;
>  
> -			phys = <&pcie1_phy>;
> -			phy-names = "pciephy";
> -
>  			pinctrl-names = "default";
>  			pinctrl-0 = <&pcie1_clkreq_n>;
>  
> @@ -2284,7 +2281,7 @@ pcie1: pcie@...8000 {
>  
>  			status = "disabled";
>  
> -			pcie@0 {
> +			pcie1_port0: pcie@0 {
>  				device_type = "pci";
>  				reg = <0x0 0x0 0x0 0x0 0x0>;
>  				bus-range = <0x01 0xff>;
> @@ -2292,6 +2289,7 @@ pcie@0 {
>  				#address-cells = <3>;
>  				#size-cells = <2>;
>  				ranges;
> +				phys = <&pcie1_phy>;
>  			};
>  		};
>  
> 
> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry