From afb424b99e0f556bf1324c73570028cb56d5cadb Mon Sep 17 00:00:00 2001
From: Tim Harvey <tharvey@gateworks.com>
Date: Thu, 16 Dec 2021 08:41:49 -0800
Subject: arm64: dts: imx8mm-venice*: add PCIe support

Add PCIe support to GW71xx/GW72xx/GW73xx/GW7901/GW7902

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---
 .../boot/dts/freescale/imx8mm-venice-gw71xx.dtsi   | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)

(limited to 'arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi')

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
index 28012279f6f6..506335efc391 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
@@ -5,6 +5,7 @@
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/leds/common.h>
+#include <dt-bindings/phy/phy-imx8-pcie.h>
 
 / {
 	aliases {
@@ -33,6 +34,12 @@
 		};
 	};
 
+	pcie0_refclk: pcie0-refclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
 	pps {
 		compatible = "pps-gpio";
 		pinctrl-names = "default";
@@ -87,6 +94,28 @@
 	status = "okay";
 };
 
+&pcie_phy {
+	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>;
+	fsl,clkreq-unsupported;
+	clocks = <&pcie0_refclk>;
+	status = "okay";
+};
+
+&pcie0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pcie0>;
+	reset-gpio = <&gpio4 6 GPIO_ACTIVE_LOW>;
+	clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&clk IMX8MM_CLK_PCIE1_AUX>,
+		 <&pcie0_refclk>;
+	clock-names = "pcie", "pcie_aux", "pcie_bus";
+	assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>,
+			  <&clk IMX8MM_CLK_PCIE1_CTRL>;
+	assigned-clock-rates = <10000000>, <250000000>;
+	assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_50M>,
+				 <&clk IMX8MM_SYS_PLL2_250M>;
+	status = "okay";
+};
+
 /* GPS */
 &uart1 {
 	pinctrl-names = "default";
@@ -148,6 +177,12 @@
 		>;
 	};
 
+	pinctrl_pcie0: pcie0grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_RXD4_GPIO4_IO6	0x41
+		>;
+	};
+
 	pinctrl_pps: ppsgrp {
 		fsl,pins = <
 			MX8MM_IOMUXC_GPIO1_IO15_GPIO1_IO15	0x41
-- 
cgit