linux-kernel - [PATCH v2 3/3] arm64: dts: imx943-evk: Add pcie[0,1] and pcie-ep[0,1] support

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Message-Id: <20260209055745.1545129-4-hongxing.zhu@nxp.com>
Date: Mon,  9 Feb 2026 13:57:45 +0800
From: Richard Zhu <hongxing.zhu@....com>
To: frank.li@....com,
	sherry.sun@....com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	festevam@...il.com
Cc: kernel@...gutronix.de,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Richard Zhu <hongxing.zhu@....com>
Subject: [PATCH v2 3/3] arm64: dts: imx943-evk: Add pcie[0,1] and pcie-ep[0,1] support

Add pcie[0,1] and pcie-ep[0,1] support.

Signed-off-by: Richard Zhu <hongxing.zhu@....com>
---
 arch/arm64/boot/dts/freescale/imx943-evk.dts | 82 ++++++++++++++++++++
 1 file changed, 82 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx943-evk.dts b/arch/arm64/boot/dts/freescale/imx943-evk.dts
index 765d9d05e489d..524bcb5951151 100644
--- a/arch/arm64/boot/dts/freescale/imx943-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx943-evk.dts
@@ -49,6 +49,20 @@ chosen {
 		stdout-path = &lpuart1;
 	};
 
+	pcie_ref_clk: clock-pcie-ref {
+		compatible = "gpio-gate-clock";
+		clocks = <&xtal25m>;
+		#clock-cells = <0>;
+		enable-gpios = <&pca9670_i2c3 7 GPIO_ACTIVE_LOW>;
+	};
+
+	xtal25m: clock-xtal25m {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <25000000>;
+		clock-output-names = "xtal_25MHz";
+	};
+
 	dmic: dmic {
 		compatible = "dmic-codec";
 		#sound-dai-cells = <0>;
@@ -70,6 +84,15 @@ reg_m2_pwr: regulator-m2-pwr {
 		startup-delay-us = <5000>;
 	};
 
+	reg_slot_pwr: regulator-slot-pwr {
+		compatible = "regulator-fixed";
+		regulator-name = "PCIe slot-power";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&pcal6416_i2c3_u46 0 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
 	reg_m2_wlan: regulator-wlan {
 		compatible = "regulator-fixed";
 		regulator-name = "WLAN_EN";
@@ -641,6 +664,18 @@ IMX94_PAD_GPIO_IO28__LPI2C6_SCL		0x40000b9e
 		>;
 	};
 
+	pinctrl_pcie0: pcie0grp {
+		fsl,pins = <
+			IMX94_PAD_GPIO_IO20__PCIE1_CLKREQ_B	0x4000031e
+		>;
+	};
+
+	pinctrl_pcie1: pcie1grp {
+		fsl,pins = <
+			IMX94_PAD_GPIO_IO23__PCIE2_CLKREQ_B	0x4000031e
+		>;
+	};
+
 	pinctrl_pdm: pdmgrp {
 		fsl,pins = <
 			IMX94_PAD_PDM_CLK__PDM_CLK			0x31e
@@ -800,6 +835,53 @@ IMX94_PAD_XSPI1_DQS__XSPI1_A_DQS	0x3fe
 	};
 };
 
+&pcie0 {
+	pinctrl-0 = <&pinctrl_pcie0>;
+	pinctrl-names = "default";
+	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>,
+		 <&pcie_ref_clk>;
+	clock-names = "pcie", "pcie_bus", "pcie_phy", "pcie_aux",
+		      "ref", "extref";
+	reset-gpio = <&pcal6416_i2c3_u46 3 GPIO_ACTIVE_LOW>;
+	vpcie3v3aux-supply = <&reg_m2_wlan>;
+	supports-clkreq;
+	status = "okay";
+};
+
+&pcie0_ep {
+	pinctrl-0 = <&pinctrl_pcie0>;
+	pinctrl-names = "default";
+	vpcie3v3aux-supply = <&reg_m2_wlan>;
+	status = "disabled";
+};
+
+&pcie1 {
+	pinctrl-0 = <&pinctrl_pcie1>;
+	pinctrl-names = "default";
+	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>,
+		 <&pcie_ref_clk>;
+	clock-names = "pcie", "pcie_bus", "pcie_phy", "pcie_aux",
+		      "ref", "extref";
+	reset-gpio = <&pcal6416_i2c3_u46 1 GPIO_ACTIVE_LOW>;
+	vpcie3v3aux-supply = <&reg_slot_pwr>;
+	status = "okay";
+};
+
+&pcie1_ep {
+	pinctrl-0 = <&pinctrl_pcie1>;
+	pinctrl-names = "default";
+	vpcie3v3aux-supply = <&reg_slot_pwr>;
+	status = "disabled";
+};
+
 &usdhc1 {
 	pinctrl-0 = <&pinctrl_usdhc1>;
 	pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
-- 
2.37.1