linux-kernel - Re: [PATCH 5/6] arm64: dts: qcom: sar2130p: add PCIe EP device nodes

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Message-ID: <17aa47df-1daf-4ec2-8f6a-48c3bc375dd3@oss.qualcomm.com>
Date: Mon, 17 Feb 2025 20:23:28 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Mrinmay Sarkar <quic_msarkar@...cinc.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: Krzysztof Wilczyński <kwilczynski@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/6] arm64: dts: qcom: sar2130p: add PCIe EP device nodes

On 17.02.2025 7:56 PM, Dmitry Baryshkov wrote:
> On the Qualcomm AR2 Gen1 platform the second PCIe host can be used
> either as an RC or as an EP device. Add device node for the PCIe EP.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sar2130p.dtsi | 53 ++++++++++++++++++++++++++++++++++
>  1 file changed, 53 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sar2130p.dtsi b/arch/arm64/boot/dts/qcom/sar2130p.dtsi
> index dd832e6816be85817fd1ecc853f8d4c800826bc4..7f007fad6eceebac1b2a863d9f85f2ce3dfb926a 100644
> --- a/arch/arm64/boot/dts/qcom/sar2130p.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sar2130p.dtsi
> @@ -1474,6 +1474,59 @@ pcie@0 {
>  			};
>  		};
>  
> +		pcie1_ep: pcie-ep@...8000 {
> +			compatible = "qcom,sar2130p-pcie-ep";
> +			reg = <0x0 0x01c08000 0x0 0x3000>,
> +			      <0x0 0x40000000 0x0 0xf1d>,
> +			      <0x0 0x40000f20 0x0 0xa8>,
> +			      <0x0 0x40001000 0x0 0x1000>,
> +			      <0x0 0x40200000 0x0 0x1000000>,
> +			      <0x0 0x01c0b000 0x0 0x1000>,
> +			      <0x0 0x40002000 0x0 0x2000>;
> +			reg-names = "parf", "dbi", "elbi", "atu", "addr_space",
> +				    "mmio", "dma";

vertical list, please

> +
> +			clocks = <&gcc GCC_PCIE_1_AUX_CLK>,
> +				 <&gcc GCC_PCIE_1_CFG_AHB_CLK>,
> +				 <&gcc GCC_PCIE_1_MSTR_AXI_CLK>,
> +				 <&gcc GCC_PCIE_1_SLV_AXI_CLK>,
> +				 <&gcc GCC_PCIE_1_SLV_Q2A_AXI_CLK>,
> +				 <&gcc GCC_DDRSS_PCIE_SF_CLK>,
> +				 <&gcc GCC_AGGRE_NOC_PCIE_1_AXI_CLK>,
> +				 <&gcc GCC_CFG_NOC_PCIE_ANOC_AHB_CLK>,
> +				 <&gcc GCC_QMIP_PCIE_AHB_CLK>;

please make sure this one is actually required

> +			clock-names = "aux",
> +				      "cfg",
> +				      "bus_master",
> +				      "bus_slave",
> +				      "slave_q2a",
> +				      "ddrss_sf_tbu",
> +				      "aggre_noc_axi",
> +				      "cnoc_sf_axi",
> +				      "qmip_pcie_ahb";
> +
> +			interrupts = <GIC_SPI 306 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 440 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 263 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "global", "doorbell", "dma";

and here

> +
> +			interconnects = <&pcie_noc MASTER_PCIE_1 QCOM_ICC_TAG_ALWAYS
> +					 &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
> +					<&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ALWAYS
> +					 &config_noc SLAVE_PCIE_1 QCOM_ICC_TAG_ALWAYS>;

active-only


looks good otherwise

Konrad