linux-kernel - Re: [PATCH v2 1/3] arm64: dts: imx94: add pcie0 and pcie0-ep supports

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Message-ID: <aYoJ3MUSFSY5boTR@lizhi-Precision-Tower-5810>
Date: Mon, 9 Feb 2026 11:22:52 -0500
From: Frank Li <Frank.li@....com>
To: Richard Zhu <hongxing.zhu@....com>
Cc: sherry.sun@....com, robh@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
	festevam@...il.com, kernel@...gutronix.de,
	devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/3] arm64: dts: imx94: add pcie0 and pcie0-ep supports

On Mon, Feb 09, 2026 at 01:57:43PM +0800, Richard Zhu wrote:
> Add pcie0 and pcie0-ep supports.
>
> Signed-off-by: Richard Zhu <hongxing.zhu@....com>
> ---
Reviewed-by: Frank Li <Frank.Li@....com>
>  arch/arm64/boot/dts/freescale/imx94.dtsi | 89 ++++++++++++++++++++++++
>  1 file changed, 89 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx94.dtsi b/arch/arm64/boot/dts/freescale/imx94.dtsi
> index d2f31c8caf6eb..0b9f4ea7859d6 100644
> --- a/arch/arm64/boot/dts/freescale/imx94.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx94.dtsi
> @@ -66,6 +66,13 @@ sai4_mclk: clock-sai4-mclk1 {
>  		clock-output-names = "sai4_mclk";
>  	};
>
> +	clk_sys100m: clock-sys100m {
> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <100000000>;
> +		clock-output-names = "clk_sys100m";
> +	};
> +
>  	firmware {
>  		scmi {
>  			compatible = "arm,scmi";
> @@ -1223,6 +1230,88 @@ wdog3: watchdog@...20000 {
>  			};
>  		};
>
> +		hsio_blk_ctl: syscon@...100c0 {
> +			compatible = "nxp,imx95-hsio-blk-ctl", "syscon";
> +			reg = <0x0 0x4c0100c0 0x0 0x1>;
> +			#clock-cells = <1>;
> +			clocks = <&clk_sys100m>;
> +			power-domains = <&scmi_devpd IMX94_PD_HSIO_TOP>;
> +		};
> +
> +		pcie0: pcie@...00000 {
> +			compatible = "fsl,imx95-pcie";
> +			reg = <0 0x4c300000 0 0x10000>,
> +			      <0 0x60100000 0 0xfe00000>,
> +			      <0 0x4c360000 0 0x10000>,
> +			      <0 0x4c340000 0 0x4000>;
> +			reg-names = "dbi", "config", "atu", "app";
> +			ranges = <0x81000000 0x0 0x00000000 0x0 0x6ff00000 0 0x00100000>,
> +				 <0x82000000 0x0 0x10000000 0x9 0x10000000 0 0x80000000>;
> +			#address-cells = <3>;
> +			#size-cells = <2>;
> +			device_type = "pci";
> +			linux,pci-domain = <2>;
> +			msi-map = <0x0 &its 0x10 0x1>,
> +				  <0x100 &its 0x11 0x7>;
> +			msi-map-mask = <0x1ff>;
> +			bus-range = <0x00 0xff>;
> +			num-lanes = <1>;
> +			num-viewport = <8>;
> +			interrupts = <GIC_SPI 364 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 364 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 364 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "msi", "pme", "intr";
> +			#interrupt-cells = <1>;
> +			interrupt-map-mask = <0 0 0 0x7>;
> +			interrupt-map = <0 0 0 1 &gic 0 0 GIC_SPI 360 IRQ_TYPE_LEVEL_HIGH>,
> +					<0 0 0 2 &gic 0 0 GIC_SPI 361 IRQ_TYPE_LEVEL_HIGH>,
> +					<0 0 0 3 &gic 0 0 GIC_SPI 362 IRQ_TYPE_LEVEL_HIGH>,
> +					<0 0 0 4 &gic 0 0 GIC_SPI 363 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&scmi_clk IMX94_CLK_HSIO>,
> +				 <&scmi_clk IMX94_CLK_HSIOPLL>,
> +				 <&scmi_clk IMX94_CLK_HSIOPLL_VCO>,
> +				 <&scmi_clk IMX94_CLK_HSIOPCIEAUX>,
> +				 <&hsio_blk_ctl 0>;
> +			clock-names = "pcie", "pcie_bus", "pcie_phy", "pcie_aux", "ref";
> +			assigned-clocks =<&scmi_clk IMX94_CLK_HSIOPLL_VCO>,
> +					 <&scmi_clk IMX94_CLK_HSIOPLL>,
> +					 <&scmi_clk IMX94_CLK_HSIOPCIEAUX>;
> +			assigned-clock-rates = <3600000000>, <100000000>, <10000000>;
> +			assigned-clock-parents = <0>, <0>,
> +						 <&scmi_clk IMX94_CLK_SYSPLL1_PFD1_DIV2>;
> +			power-domains = <&scmi_devpd IMX94_PD_HSIO_TOP>;
> +			fsl,max-link-speed = <3>;
> +			status = "disabled";
> +		};
> +
> +		pcie0_ep: pcie-ep@...00000 {
> +			compatible = "fsl,imx95-pcie-ep";
> +			reg = <0 0x4c300000 0 0x10000>,
> +			      <0 0x4c360000 0 0x1000>,
> +			      <0 0x4c320000 0 0x1000>,
> +			      <0 0x4c340000 0 0x4000>,
> +			      <0 0x4c370000 0 0x10000>,
> +			      <0x9 0 1 0>;
> +			reg-names = "dbi","atu", "dbi2", "app", "dma", "addr_space";
> +			num-lanes = <1>;
> +			interrupts = <GIC_SPI 365 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "dma";
> +			clocks = <&scmi_clk IMX94_CLK_HSIO>,
> +				 <&scmi_clk IMX94_CLK_HSIOPLL>,
> +				 <&scmi_clk IMX94_CLK_HSIOPLL_VCO>,
> +				 <&scmi_clk IMX94_CLK_HSIOPCIEAUX>;
> +			clock-names = "pcie", "pcie_bus", "pcie_phy", "pcie_aux";
> +			assigned-clocks =<&scmi_clk IMX94_CLK_HSIOPLL_VCO>,
> +					 <&scmi_clk IMX94_CLK_HSIOPLL>,
> +					 <&scmi_clk IMX94_CLK_HSIOPCIEAUX>;
> +			assigned-clock-rates = <3600000000>, <100000000>, <10000000>;
> +			assigned-clock-parents = <0>, <0>,
> +						 <&scmi_clk IMX94_CLK_SYSPLL1_PFD1_DIV2>;
> +			msi-map = <0x0 &its 0x10 0x1>;
> +			power-domains = <&scmi_devpd IMX94_PD_HSIO_TOP>;
> +			status = "disabled";
> +		};
> +
>  		netc_blk_ctrl: system-controller@...b0000 {
>  			compatible = "nxp,imx94-netc-blk-ctrl";
>  			reg = <0x0 0x4ceb0000 0x0 0x10000>,
> --
> 2.37.1
>