linux-kernel - [PATCH 2/4] arm64: dts: imx8dxl-evk: Add PCIe support

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Message-Id: <20241002204750.597337-2-Frank.Li@nxp.com>
Date: Wed,  2 Oct 2024 16:47:46 -0400
From: Frank Li <Frank.Li@....com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	imx@...ts.linux.dev (open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE),
	linux-arm-kernel@...ts.infradead.org (moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/4] arm64: dts: imx8dxl-evk: Add PCIe support

From: Richard Zhu <hongxing.zhu@....com>

Add PCIe supports on i.MX8DXL EVK board.

Signed-off-by: Richard Zhu <hongxing.zhu@....com>
Signed-off-by: Frank Li <Frank.Li@....com>
---
 arch/arm64/boot/dts/freescale/imx8dxl-evk.dts | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts b/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts
index 4caaecc192277..5ded27a26097b 100644
--- a/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts
@@ -182,6 +182,15 @@ mii_select: regulator-4 {
 		regulator-always-on;
 	};
 
+	reg_pcieb: regulator-pcieb {
+		compatible = "regulator-fixed";
+		regulator-max-microvolt = <3300000>;
+		regulator-min-microvolt = <3300000>;
+		regulator-name = "reg_pcieb";
+		gpio = <&pca6416_1 13 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
 	bt_sco_codec: audio-codec-bt {
 		compatible = "linux,bt-sco";
 		#sound-dai-cells = <1>;
@@ -567,6 +576,12 @@ &flexcan3 {
 	status = "okay";
 };
 
+&hsio_phy{
+	fsl,hsio-cfg = "pciea-x2-pcieb";
+	fsl,refclk-pad-mode = "output";
+	status = "okay";
+};
+
 &cm40_intmux {
 	status = "disabled";
 };
@@ -585,6 +600,16 @@ &lsio_gpio5 {
 	status = "okay";
 };
 
+&pcieb{
+	phys = <&hsio_phy 0 PHY_TYPE_PCIE 0>;
+	phy-names = "pcie-phy";
+	pinctrl-0 = <&pinctrl_pcieb>;
+	pinctrl-names = "default";
+	reset-gpio = <&lsio_gpio4 0 GPIO_ACTIVE_LOW>;
+	vpcie-supply = <&reg_pcieb>;
+	status = "okay";
+};
+
 &sai0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_sai0>;
@@ -868,6 +893,14 @@ IMX8DXL_UART1_CTS_B_ADMA_UART1_CTS_B    0x06000020
 		>;
 	};
 
+	pinctrl_pcieb: pcieagrp{
+		fsl,pins = <
+			IMX8DXL_PCIE_CTRL0_PERST_B_LSIO_GPIO4_IO00	0x06000021
+			IMX8DXL_PCIE_CTRL0_CLKREQ_B_LSIO_GPIO4_IO01	0x06000021
+			IMX8DXL_PCIE_CTRL0_WAKE_B_LSIO_GPIO4_IO02	0x04000021
+		>;
+	};
+
 	pinctrl_sai0: sai0grp {
 		fsl,pins = <
 			IMX8DXL_SPI0_CS0_ADMA_SAI0_RXD		0x06000060
-- 
2.34.1