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>

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 @@ led-1 {
 		};
 	};
 
+	pcie0_refclk: pcie0-refclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
 	pps {
 		compatible = "pps-gpio";
 		pinctrl-names = "default";
@@ -87,6 +94,28 @@ &i2c3 {
 	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 @@ MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA		0x400001c3
 		>;
 	};
 
+	pinctrl_pcie0: pcie0grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_RXD4_GPIO4_IO6	0x41
+		>;
+	};
+
 	pinctrl_pps: ppsgrp {
 		fsl,pins = <
 			MX8MM_IOMUXC_GPIO1_IO15_GPIO1_IO15	0x41

arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx.dtsi

@@ -5,9 +5,11 @@
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/leds/common.h>
+#include <dt-bindings/phy/phy-imx8-pcie.h>
 
 / {
 	aliases {
+		ethernet1 = &eth1;
 		usb0 = &usbotg1;
 		usb1 = &usbotg2;
 	};
@@ -33,6 +35,12 @@ led-1 {
 		};
 	};
 
+	pcie0_refclk: pcie0-refclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
 	pps {
 		compatible = "pps-gpio";
 		pinctrl-names = "default";
@@ -106,6 +114,54 @@ &i2c3 {
 	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";
+
+	pcie@0,0 {
+		reg = <0x0000 0 0 0 0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		pcie@1,0 {
+			reg = <0x0000 0 0 0 0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			pcie@2,3 {
+				reg = <0x1800 0 0 0 0>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				eth1: pcie@5,0 {
+					reg = <0x0000 0 0 0 0>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					local-mac-address = [00 00 00 00 00 00];
+				};
+			};
+		};
+	};
+};
+
 /* off-board header */
 &sai3 {
 	pinctrl-names = "default";
@@ -198,6 +254,12 @@ MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA		0x400001c3
 		>;
 	};
 
+	pinctrl_pcie0: pcie0grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_RXD4_GPIO4_IO6	0x41
+		>;
+	};
+
 	pinctrl_pps: ppsgrp {
 		fsl,pins = <
 			MX8MM_IOMUXC_GPIO1_IO15_GPIO1_IO15	0x41

arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi

@@ -5,9 +5,11 @@
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/leds/common.h>
+#include <dt-bindings/phy/phy-imx8-pcie.h>
 
 / {
 	aliases {
+		ethernet1 = &eth1;
 		usb0 = &usbotg1;
 		usb1 = &usbotg2;
 	};
@@ -33,6 +35,12 @@ led-1 {
 		};
 	};
 
+	pcie0_refclk: pcie0-refclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
 	pps {
 		compatible = "pps-gpio";
 		pinctrl-names = "default";
@@ -126,6 +134,54 @@ &i2c3 {
 	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";
+
+	pcie@0,0 {
+		reg = <0x0000 0 0 0 0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		pcie@1,0 {
+			reg = <0x0000 0 0 0 0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			pcie@2,4 {
+				reg = <0x2000 0 0 0 0>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				eth1: pcie@6,0 {
+					reg = <0x0000 0 0 0 0>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					local-mac-address = [00 00 00 00 00 00];
+				};
+			};
+		};
+	};
+};
+
 /* off-board header */
 &sai3 {
 	pinctrl-names = "default";
@@ -241,6 +297,12 @@ MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA		0x400001c3
 		>;
 	};
 
+	pinctrl_pcie0: pcie0grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_RXD4_GPIO4_IO6	0x41
+		>;
+	};
+
 	pinctrl_pps: ppsgrp {
 		fsl,pins = <
 			MX8MM_IOMUXC_GPIO1_IO15_GPIO1_IO15	0x41

arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts

@@ -8,6 +8,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/linux-event-codes.h>
 #include <dt-bindings/leds/common.h>
+#include <dt-bindings/phy/phy-imx8-pcie.h>
 
 #include "imx8mm.dtsi"
 
@@ -179,6 +180,12 @@ led-b {
 		};
 	};
 
+	pcie0_refclk: pcie0-refclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
 	reg_3p3v: regulator-3p3v {
 		compatible = "regulator-fixed";
 		regulator-name = "3P3V";
@@ -644,6 +651,28 @@ &i2c4 {
 	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 = <&gpio5 2 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";
+};
+
 &pgc_gpu {
 	status = "disabled";
 };
@@ -820,6 +849,13 @@ MX8MM_IOMUXC_SAI1_TXD7_GPIO4_IO19	0x41 /* RST# */
 		>;
 	};
 
+	pinctrl_pcie0: pciegrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI3_TXFS_GPIO4_IO31	0x40000041 /* WDIS# */
+			MX8MM_IOMUXC_SAI3_MCLK_GPIO5_IO2	0x41
+		>;
+	};
+
 	pinctrl_pmic: pmicgrp {
 		fsl,pins = <
 			MX8MM_IOMUXC_SAI5_RXC_GPIO3_IO20	0x41

arch/arm64/boot/dts/freescale/imx8mm-venice-gw7902.dts

@@ -9,6 +9,7 @@
 #include <dt-bindings/input/linux-event-codes.h>
 #include <dt-bindings/leds/common.h>
 #include <dt-bindings/net/ti-dp83867.h>
+#include <dt-bindings/phy/phy-imx8-pcie.h>
 
 #include "imx8mm.dtsi"
 
@@ -17,6 +18,7 @@ / {
 	compatible = "gw,imx8mm-gw7902", "fsl,imx8mm";
 
 	aliases {
+		ethernet1 = &eth1;
 		usb0 = &usbotg1;
 		usb1 = &usbotg2;
 	};
@@ -128,6 +130,12 @@ led-4 {
 		};
 	};
 
+	pcie0_refclk: pcie0-refclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
 	pps {
 		compatible = "pps-gpio";
 		pinctrl-names = "default";
@@ -547,6 +555,42 @@ &i2c4 {
 	status = "okay";
 };
 
+&pcie_phy {
+	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>;
+	fsl,clkreq-unsupported;
+	clocks = <&clk IMX8MM_CLK_DUMMY>;
+	status = "okay";
+};
+
+&pcie0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pcie0>;
+	reset-gpio = <&gpio4 5 GPIO_ACTIVE_LOW>;
+	clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&clk IMX8MM_CLK_PCIE1_AUX>,
+		 <&clk IMX8MM_CLK_DUMMY>, <&pcie0_refclk>;
+	clock-names = "pcie", "pcie_aux", "pcie_phy", "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";
+
+	pcie@0,0 {
+		reg = <0x0000 0 0 0 0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		eth1: pcie@1,0 {
+			reg = <0x0000 0 0 0 0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			local-mac-address = [00 00 00 00 00 00];
+		};
+	};
+};
+
 /* off-board header */
 &sai3 {
 	pinctrl-names = "default";
@@ -737,6 +781,12 @@ MX8MM_IOMUXC_SAI5_MCLK_GPIO3_IO25	0x19
 		>;
 	};
 
+	pinctrl_pcie0: pciegrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_RXD3_GPIO4_IO5	0x41
+		>;
+	};
+
 	pinctrl_pmic: pmicgrp {
 		fsl,pins = <
 			MX8MM_IOMUXC_NAND_DATA02_GPIO3_IO8	0x41