linux-kernel - Re: [PATCH v2 4/6] ARM: dts: qcom: sdx65: Add support for PCIe EP

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Date:   Sat, 11 Mar 2023 15:51:04 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Rohit Agarwal <quic_rohiagar@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, konrad.dybcio@...aro.org, lee@...nel.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        mani@...nel.org, lpieralisi@...nel.org, kw@...ux.com,
        bhelgaas@...gle.com, manivannan.sadhasivam@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH v2 4/6] ARM: dts: qcom: sdx65: Add support for PCIe EP

On 08/03/2023 14:19, Rohit Agarwal wrote:
> Add support for PCIe Endpoint controller on the
> Qualcomm SDX65 platform.
> 
> Signed-off-by: Rohit Agarwal <quic_rohiagar@...cinc.com>
> ---
>   arch/arm/boot/dts/qcom-sdx65.dtsi | 59 +++++++++++++++++++++++++++++++++++++++
>   1 file changed, 59 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom-sdx65.dtsi b/arch/arm/boot/dts/qcom-sdx65.dtsi
> index df9d428..5ea6a5a 100644
> --- a/arch/arm/boot/dts/qcom-sdx65.dtsi
> +++ b/arch/arm/boot/dts/qcom-sdx65.dtsi
> @@ -11,6 +11,7 @@
>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>   #include <dt-bindings/power/qcom-rpmpd.h>
>   #include <dt-bindings/soc/qcom,rpmh-rsc.h>
> +#include <dt-bindings/gpio/gpio.h>
>   
>   / {
>   	#address-cells = <1>;
> @@ -293,6 +294,59 @@
>   			status = "disabled";
>   		};
>   
> +		pcie_ep: pcie-ep@...0000 {
> +			compatible = "qcom,sdx65-pcie-ep", "qcom,sdx55-pcie-ep";
> +			reg = <0x01c00000 0x3000>,
> +			      <0x40000000 0xf1d>,
> +			      <0x40000f20 0xa8>,
> +			      <0x40001000 0x1000>,
> +			      <0x40200000 0x100000>,
> +			      <0x01c03000 0x3000>;
> +			reg-names = "parf",
> +				    "dbi",
> +				    "elbi",
> +				    "atu",
> +				    "addr_space",
> +				    "mmio";
> +
> +			qcom,perst-regs = <&tcsr 0xb258 0xb270>;
> +
> +			clocks = <&gcc GCC_PCIE_AUX_CLK>,
> +				 <&gcc GCC_PCIE_CFG_AHB_CLK>,
> +				 <&gcc GCC_PCIE_MSTR_AXI_CLK>,
> +				 <&gcc GCC_PCIE_SLV_AXI_CLK>,
> +				 <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>,
> +				 <&gcc GCC_PCIE_SLEEP_CLK>,
> +				 <&gcc GCC_PCIE_0_CLKREF_EN>;
> +			clock-names = "aux",
> +				      "cfg",
> +				      "bus_master",
> +				      "bus_slave",
> +				      "slave_q2a",
> +				      "sleep",
> +				      "ref";
> +
> +			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "global", "doorbell";
> +
> +			reset-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>;
> +			wake-gpios = <&tlmm 53 GPIO_ACTIVE_LOW>;

-gpios should go to the board file too.

> +
> +			resets = <&gcc GCC_PCIE_BCR>;
> +			reset-names = "core";
> +
> +			power-domains = <&gcc PCIE_GDSC>;
> +
> +			phys = <&pcie_phy>;
> +			phy-names = "pcie-phy";
> +
> +			max-link-speed = <3>;
> +			num-lanes = <2>;
> +
> +			status = "disabled";
> +		};
> +
>   		pcie_phy: phy@...6000 {
>   			compatible = "qcom,sdx65-qmp-gen4x2-pcie-phy";
>   			reg = <0x01c06000 0x2000>;
> @@ -332,6 +386,11 @@
>   			#hwlock-cells = <1>;
>   		};
>   
> +		tcsr: syscon@...b000 {
> +			compatible = "qcom,sdx65-tcsr", "syscon";
> +			reg = <0x01fc0000 0x1000>;
> +		};
> +
>   		remoteproc_mpss: remoteproc@...0000 {
>   			compatible = "qcom,sdx55-mpss-pas";
>   			reg = <0x04080000 0x4040>;

-- 
With best wishes
Dmitry