linux-kernel - [PATCH v2] arm64: dts: imx8mq-evk: Add second PCIe port support

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Message-Id: <1644372408-5485-1-git-send-email-hongxing.zhu@nxp.com>
Date:   Wed,  9 Feb 2022 10:06:48 +0800
From:   Richard Zhu <hongxing.zhu@....com>
To:     bhelgaas@...gle.com, shawnguo@...nel.org, l.stach@...gutronix.de
Cc:     hongxing.zhu@....com, linux-pci@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...gutronix.de, linux-imx@....com
Subject: [PATCH v2] arm64: dts: imx8mq-evk: Add second PCIe port support

Enable the second PCIe port support on i.MX8MQ EVK board.

Signed-off-by: Richard Zhu <hongxing.zhu@....com>
---
 arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 38 ++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
index a1b7582f3ecf..06f6e44da4d4 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -27,6 +27,17 @@ pcie0_refclk: pcie0-refclk {
 		clock-frequency = <100000000>;
 	};
 
+	reg_pcie1: regulator-pcie {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_pcie1_reg>;
+		regulator-name = "MPCIE_3V3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio5 10 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
 	reg_usdhc2_vmmc: regulator-vsd-3v3 {
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_reg_usdhc2>;
@@ -327,6 +338,20 @@ &pcie0 {
 	status = "okay";
 };
 
+&pcie1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pcie1>;
+	reset-gpio = <&gpio5 12 GPIO_ACTIVE_LOW>;
+	clocks = <&clk IMX8MQ_CLK_PCIE2_ROOT>,
+		 <&clk IMX8MQ_CLK_PCIE2_AUX>,
+		 <&clk IMX8MQ_CLK_PCIE2_PHY>,
+		 <&pcie0_refclk>;
+	clock-names = "pcie", "pcie_aux", "pcie_phy", "pcie_bus";
+	vpcie-supply = <&reg_pcie1>;
+	vph-supply = <&vgen5_reg>;
+	status = "okay";
+};
+
 &pgc_gpu {
 	power-supply = <&sw1a_reg>;
 };
@@ -482,6 +507,19 @@ MX8MQ_IOMUXC_UART4_RXD_GPIO5_IO28		0x16
 		>;
 	};
 
+	pinctrl_pcie1: pcie1grp {
+		fsl,pins = <
+			MX8MQ_IOMUXC_I2C4_SDA_PCIE2_CLKREQ_B		0x76
+			MX8MQ_IOMUXC_ECSPI2_MISO_GPIO5_IO12		0x16
+		>;
+	};
+
+	pinctrl_pcie1_reg: pcie1reggrp {
+		fsl,pins = <
+			MX8MQ_IOMUXC_ECSPI2_SCLK_GPIO5_IO10		0x16
+		>;
+	};
+
 	pinctrl_qspi: qspigrp {
 		fsl,pins = <
 			MX8MQ_IOMUXC_NAND_ALE_QSPI_A_SCLK	0x82
-- 
2.25.1