ARM: dts: imx6qdl: Add Root Port node and PERST property

Since describing the PCIe PERST# property under Host Bridge node is now
deprecated, it is recommended to add it to the Root Port node, so
creating the Root Port node and add the reset-gpios property in Root
Port.

Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>

Author: SherrySun5

arch/arm/boot/dts/nxp/imx/imx6q-utilite-pro.dts

@@ -323,19 +323,10 @@
 	remote-endpoint = <&parallel_display_in>;
 };
 
-&pcie {
-	pcie@0,0 {
-		reg = <0x000000 0 0 0 0>;
-		device_type = "pci";
-		#address-cells = <3>;
-		#size-cells = <2>;
-		bus-range = <0x00 0xff>;
-		ranges;
-
-		/* non-removable i211 ethernet card */
-		eth1: ethernet@0,0 {
-			reg = <0x010000 0 0 0 0>;
-		};
+&pcie_port0 {
+	/* non-removable i211 ethernet card */
+	eth1: ethernet@0,0 {
+		reg = <0x010000 0 0 0 0>;
 	};
 };
 

arch/arm/boot/dts/nxp/imx/imx6qdl-sabresd.dtsi

@@ -754,11 +754,16 @@
 &pcie {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_pcie>;
+	/* This property is deprecated, use reset-gpios from the Root Port node. */
 	reset-gpio = <&gpio7 12 GPIO_ACTIVE_LOW>;
 	vpcie-supply = <&reg_pcie>;
 	status = "okay";
 };
 
+&pcie_port0 {
+	reset-gpios = <&gpio7 12 GPIO_ACTIVE_LOW>;
+};
+
 &pwm1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_pwm1>;

arch/arm/boot/dts/nxp/imx/imx6qdl.dtsi

@@ -289,6 +289,17 @@
 				 <&clks IMX6QDL_CLK_PCIE_REF_125M>;
 			clock-names = "pcie", "pcie_bus", "pcie_phy";
 			status = "disabled";
+
+			pcie_port0: pcie@0 {
+				compatible = "pciclass,0604";
+				device_type = "pci";
+				reg = <0x0 0x0 0x0 0x0 0x0>;
+				bus-range = <0x01 0xff>;
+
+				#address-cells = <3>;
+				#size-cells = <2>;
+				ranges;
+			};
 		};
 
 		aips1: bus@2000000 { /* AIPS1 */

arch/arm/boot/dts/nxp/imx/imx6qp-sabreauto.dts

@@ -45,10 +45,15 @@
 };
 
 &pcie {
+	/* This property is deprecated, use reset-gpios from the Root Port node. */
 	reset-gpio = <&max7310_c 5 GPIO_ACTIVE_LOW>;
 	status = "okay";
 };
 
+&pcie_port0 {
+	reset-gpios = <&max7310_c 5 GPIO_ACTIVE_LOW>;
+};
+
 &sata {
 	status = "okay";
 };