x86: crownbay: Add pci devices in the dts file

The Topcliff PCH has 4 UART devices integrated (Device 10, Funciton
1/2/3/4). Add the corresponding device nodes in the crownbay.dts per
Open Firmware PCI bus bindings.

Also a comment block is added for the 'stdout-path' property in the
chosen node, mentioning that by default the legacy superio serial
port (io addr 0x3f8) is still used on Crown Bay as the console port.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

arch/x86/dts/crownbay.dts

@@ -32,6 +32,14 @@
 	};
 
 	chosen {
+		/*
+		 * By default the legacy superio serial port is used as the
+		 * U-Boot serial console. If we want to use UART from Topcliff
+		 * PCH as the console, change this property to &pciuart#.
+		 *
+		 * For example, stdout-path = &pciuart0 will use the first
+		 * UART on Topcliff PCH.
+		 */
 		stdout-path = "/serial";
 	};
 
@@ -52,4 +60,77 @@
 		};
 	};
 
+	pci {
+		#address-cells = <3>;
+		#size-cells = <2>;
+		compatible = "intel,pci";
+		device_type = "pci";
+
+		pcie@17,0 {
+			#address-cells = <3>;
+			#size-cells = <2>;
+			compatible = "intel,pci";
+			device_type = "pci";
+
+			topcliff@0,0 {
+				#address-cells = <3>;
+				#size-cells = <2>;
+				compatible = "intel,pci";
+				device_type = "pci";
+
+				pciuart0: uart@a,1 {
+					compatible = "pci8086,8811.00",
+							"pci8086,8811",
+							"pciclass,070002",
+							"pciclass,0700",
+							"x86-uart";
+					reg = <0x00025100 0x0 0x0 0x0 0x0
+					       0x01025110 0x0 0x0 0x0 0x0>;
+					reg-shift = <0>;
+					clock-frequency = <1843200>;
+					current-speed = <115200>;
+				};
+
+				pciuart1: uart@a,2 {
+					compatible = "pci8086,8812.00",
+							"pci8086,8812",
+							"pciclass,070002",
+							"pciclass,0700",
+							"x86-uart";
+					reg = <0x00025200 0x0 0x0 0x0 0x0
+					       0x01025210 0x0 0x0 0x0 0x0>;
+					reg-shift = <0>;
+					clock-frequency = <1843200>;
+					current-speed = <115200>;
+				};
+
+				pciuart2: uart@a,3 {
+					compatible = "pci8086,8813.00",
+							"pci8086,8813",
+							"pciclass,070002",
+							"pciclass,0700",
+							"x86-uart";
+					reg = <0x00025300 0x0 0x0 0x0 0x0
+					       0x01025310 0x0 0x0 0x0 0x0>;
+					reg-shift = <0>;
+					clock-frequency = <1843200>;
+					current-speed = <115200>;
+				};
+
+				pciuart3: uart@a,4 {
+					compatible = "pci8086,8814.00",
+							"pci8086,8814",
+							"pciclass,070002",
+							"pciclass,0700",
+							"x86-uart";
+					reg = <0x00025400 0x0 0x0 0x0 0x0
+					       0x01025410 0x0 0x0 0x0 0x0>;
+					reg-shift = <0>;
+					clock-frequency = <1843200>;
+					current-speed = <115200>;
+				};
+			};
+		};
+	};
+
 };