[POWERPC] 85xx: SBC8548 - Add flash support and HW Rev reporting

The following adds local bus, flash and MTD partition nodes for
sbc8548. As well, a compatible field for the soc node, so that
of_platform_bus_probe() will pick it up.

Something that is provided through this newly added epld node
is the Hardware Revision which is now being utilized.

Signed-off-by: Jeremy McNicoll <jeremy.mcnicoll@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/sbc8548.dts

@@ -52,6 +52,99 @@
 		reg = <0x00000000 0x10000000>;
 	};
 
+	localbus@e0000000 {
+		#address-cells = <2>;
+		#size-cells = <1>;
+		compatible = "simple-bus";
+		reg = <0xe0000000 0x5000>;
+		interrupt-parent = <&mpic>;
+
+		ranges = <0x0 0x0 0xff800000 0x00800000		/*8MB Flash*/
+			  0x3 0x0 0xf0000000 0x04000000		/*64MB SDRAM*/
+			  0x4 0x0 0xf4000000 0x04000000 	/*64MB SDRAM*/
+			  0x5 0x0 0xf8000000 0x00b10000		/* EPLD */
+			  0x6 0x0 0xfb800000 0x04000000>;	/*64MB Flash*/
+
+
+		flash@0,0 {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			compatible = "cfi-flash";
+			reg = <0x0 0x0 0x800000>;
+			bank-width = <1>;
+			device-width = <1>;
+			partition@0x0 {
+				label = "space";
+				reg = <0x00000000 0x00100000>;
+			};
+			partition@0x100000 {
+				label = "bootloader";
+				reg = <0x00100000 0x00700000>;
+				read-only;
+			};
+		};
+
+		epld@5,0 {
+			compatible = "wrs,epld-localbus";
+			#address-cells = <2>;
+			#size-cells = <1>;
+			reg = <0x5 0x0 0x00b10000>;
+			ranges = <
+				0x0 0x0 0x5 0x000000 0x1fff	/* LED */
+				0x1 0x0 0x5 0x100000 0x1fff	/* Switches */
+				0x3 0x0 0x5 0x300000 0x1fff	/* HW Rev. */
+				0xb 0x0	0x5 0xb00000 0x1fff	/* EEPROM */
+			>;
+
+			led@0,0 {
+				compatible = "led";
+				reg = <0x0 0x0 0x1fff>;
+			};
+
+			switches@1,0 {
+				compatible = "switches";
+				reg = <0x1 0x0 0x1fff>;
+			};
+
+			hw-rev@3,0 {
+				compatible = "hw-rev";
+				reg = <0x3 0x0 0x1fff>;
+			};
+
+			eeprom@b,0 {
+				compatible = "eeprom";
+				reg = <0xb 0 0x1fff>;
+			};
+
+		};
+
+		alt-flash@6,0 {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			reg = <0x6 0x0 0x04000000>;
+			compatible = "cfi-flash";
+			bank-width = <4>;
+			device-width = <1>;
+			partition@0x0 {
+				label = "bootloader";
+				reg = <0x00000000 0x00100000>;
+				read-only;
+			};
+			partition@0x00100000 {
+				label = "file-system";
+				reg = <0x00100000 0x01f00000>;
+			};
+			partition@0x02000000 {
+				label = "boot-config";
+				reg = <0x02000000 0x00100000>;
+			};
+			partition@0x02100000 {
+				label = "space";
+				reg = <0x02100000 0x01f00000>;
+			};
+                };
+        };
+
 	soc8548@e0000000 {
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -59,6 +152,7 @@
 		ranges = <0x00000000 0xe0000000 0x00100000>;
 		reg = <0xe0000000 0x00001000>;	// CCSRBAR
 		bus-frequency = <0>;
+		compatible = "simple-bus";
 
 		memory-controller@2000 {
 			compatible = "fsl,8548-memory-controller";