diff --git a/arch/arm/boot/dts/exynos4.dtsi b/arch/arm/boot/dts/exynos4.dtsi
new file mode 100644
index 000000000000..a26c3dd58269
--- /dev/null
+++ b/arch/arm/boot/dts/exynos4.dtsi
@@ -0,0 +1,248 @@
+/*
+ * Samsung's Exynos4 SoC series common device tree source
+ *
+ * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ * Copyright (c) 2010-2011 Linaro Ltd.
+ *		www.linaro.org
+ *
+ * Samsung's Exynos4 SoC series device nodes are listed in this file.  Particular
+ * SoCs from Exynos4 series can include this file and provide values for SoCs
+ * specfic bindings.
+ *
+ * Note: This file does not include device nodes for all the controllers in
+ * Exynos4 SoCs. As device tree coverage for Exynos4 increases, additional
+ * nodes can be added to this file.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+	interrupt-parent = <&gic>;
+
+	aliases {
+		spi0 = &spi_0;
+		spi1 = &spi_1;
+		spi2 = &spi_2;
+	};
+
+	gic:interrupt-controller@10490000 {
+		compatible = "arm,cortex-a9-gic";
+		#interrupt-cells = <3>;
+		interrupt-controller;
+		reg = <0x10490000 0x1000>, <0x10480000 0x100>;
+	};
+
+	combiner:interrupt-controller@10440000 {
+		compatible = "samsung,exynos4210-combiner";
+		#interrupt-cells = <2>;
+		interrupt-controller;
+		reg = <0x10440000 0x1000>;
+	};
+
+	watchdog@10060000 {
+		compatible = "samsung,s3c2410-wdt";
+		reg = <0x10060000 0x100>;
+		interrupts = <0 43 0>;
+		status = "disabled";
+	};
+
+	rtc@10070000 {
+		compatible = "samsung,s3c6410-rtc";
+		reg = <0x10070000 0x100>;
+		interrupts = <0 44 0>, <0 45 0>;
+		status = "disabled";
+	};
+
+	keypad@100A0000 {
+		compatible = "samsung,s5pv210-keypad";
+		reg = <0x100A0000 0x100>;
+		interrupts = <0 109 0>;
+		status = "disabled";
+	};
+
+	sdhci@12510000 {
+		compatible = "samsung,exynos4210-sdhci";
+		reg = <0x12510000 0x100>;
+		interrupts = <0 73 0>;
+		status = "disabled";
+	};
+
+	sdhci@12520000 {
+		compatible = "samsung,exynos4210-sdhci";
+		reg = <0x12520000 0x100>;
+		interrupts = <0 74 0>;
+		status = "disabled";
+	};
+
+	sdhci@12530000 {
+		compatible = "samsung,exynos4210-sdhci";
+		reg = <0x12530000 0x100>;
+		interrupts = <0 75 0>;
+		status = "disabled";
+	};
+
+	sdhci@12540000 {
+		compatible = "samsung,exynos4210-sdhci";
+		reg = <0x12540000 0x100>;
+		interrupts = <0 76 0>;
+		status = "disabled";
+	};
+
+	serial@13800000 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0x13800000 0x100>;
+		interrupts = <0 52 0>;
+		status = "disabled";
+	};
+
+	serial@13810000 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0x13810000 0x100>;
+		interrupts = <0 53 0>;
+		status = "disabled";
+	};
+
+	serial@13820000 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0x13820000 0x100>;
+		interrupts = <0 54 0>;
+		status = "disabled";
+	};
+
+	serial@13830000 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0x13830000 0x100>;
+		interrupts = <0 55 0>;
+		status = "disabled";
+	};
+
+	i2c@13860000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		reg = <0x13860000 0x100>;
+		interrupts = <0 58 0>;
+		status = "disabled";
+	};
+
+	i2c@13870000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		reg = <0x13870000 0x100>;
+		interrupts = <0 59 0>;
+		status = "disabled";
+	};
+
+	i2c@13880000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		reg = <0x13880000 0x100>;
+		interrupts = <0 60 0>;
+		status = "disabled";
+	};
+
+	i2c@13890000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		reg = <0x13890000 0x100>;
+		interrupts = <0 61 0>;
+		status = "disabled";
+	};
+
+	i2c@138A0000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		reg = <0x138A0000 0x100>;
+		interrupts = <0 62 0>;
+		status = "disabled";
+	};
+
+	i2c@138B0000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		reg = <0x138B0000 0x100>;
+		interrupts = <0 63 0>;
+		status = "disabled";
+	};
+
+	i2c@138C0000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		reg = <0x138C0000 0x100>;
+		interrupts = <0 64 0>;
+		status = "disabled";
+	};
+
+	i2c@138D0000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		reg = <0x138D0000 0x100>;
+		interrupts = <0 65 0>;
+		status = "disabled";
+	};
+
+	spi_0: spi@13920000 {
+		compatible = "samsung,exynos4210-spi";
+		reg = <0x13920000 0x100>;
+		interrupts = <0 66 0>;
+		tx-dma-channel = <&pdma0 7>; /* preliminary */
+		rx-dma-channel = <&pdma0 6>; /* preliminary */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};
+
+	spi_1: spi@13930000 {
+		compatible = "samsung,exynos4210-spi";
+		reg = <0x13930000 0x100>;
+		interrupts = <0 67 0>;
+		tx-dma-channel = <&pdma1 7>; /* preliminary */
+		rx-dma-channel = <&pdma1 6>; /* preliminary */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};
+
+	spi_2: spi@13940000 {
+		compatible = "samsung,exynos4210-spi";
+		reg = <0x13940000 0x100>;
+		interrupts = <0 68 0>;
+		tx-dma-channel = <&pdma0 9>; /* preliminary */
+		rx-dma-channel = <&pdma0 8>; /* preliminary */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};
+
+	amba {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "arm,amba-bus";
+		interrupt-parent = <&gic>;
+		ranges;
+
+		pdma0: pdma@12680000 {
+			compatible = "arm,pl330", "arm,primecell";
+			reg = <0x12680000 0x1000>;
+			interrupts = <0 35 0>;
+		};
+
+		pdma1: pdma@12690000 {
+			compatible = "arm,pl330", "arm,primecell";
+			reg = <0x12690000 0x1000>;
+			interrupts = <0 36 0>;
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/exynos4210-origen.dts b/arch/arm/boot/dts/exynos4210-origen.dts
index d69a7999a12b..3e68f52e8454 100644
--- a/arch/arm/boot/dts/exynos4210-origen.dts
+++ b/arch/arm/boot/dts/exynos4210-origen.dts
@@ -40,6 +40,7 @@ sdhci@12530000 {
 			<&gpk2 4 2 3 3>,
 			<&gpk2 5 2 3 3>,
 			<&gpk2 6 2 3 3>;
+		status = "okay";
 	};
 
 	sdhci@12510000 {
@@ -53,6 +54,7 @@ sdhci@12510000 {
 			<&gpk0 4 2 3 3>,
 			<&gpk0 5 2 3 3>,
 			<&gpk0 6 2 3 3>;
+		status = "okay";
 	};
 
 	gpio_keys {
@@ -64,30 +66,35 @@ up {
 			label = "Up";
 			gpios = <&gpx2 0 0 0x10000 2>;
 			linux,code = <103>;
+			gpio-key,wakeup;
 		};
 
 		down {
 			label = "Down";
 			gpios = <&gpx2 1 0 0x10000 2>;
 			linux,code = <108>;
+			gpio-key,wakeup;
 		};
 
 		back {
 			label = "Back";
 			gpios = <&gpx1 7 0 0x10000 2>;
 			linux,code = <158>;
+			gpio-key,wakeup;
 		};
 
 		home {
 			label = "Home";
 			gpios = <&gpx1 6 0 0x10000 2>;
 			linux,code = <102>;
+			gpio-key,wakeup;
 		};
 
 		menu {
 			label = "Menu";
 			gpios = <&gpx1 5 0 0x10000 2>;
 			linux,code = <139>;
+			gpio-key,wakeup;
 		};
 	};
 
@@ -98,60 +105,4 @@ status {
 			linux,default-trigger = "heartbeat";
 		};
 	};
-
-	keypad@100A0000 {
-		status = "disabled";
-	};
-
-	sdhci@12520000 {
-		status = "disabled";
-	};
-
-	sdhci@12540000 {
-		status = "disabled";
-	};
-
-	i2c@13860000 {
-		status = "disabled";
-	};
-
-	i2c@13870000 {
-		status = "disabled";
-	};
-
-	i2c@13880000 {
-		status = "disabled";
-	};
-
-	i2c@13890000 {
-		status = "disabled";
-	};
-
-	i2c@138A0000 {
-		status = "disabled";
-	};
-
-	i2c@138B0000 {
-		status = "disabled";
-	};
-
-	i2c@138C0000 {
-		status = "disabled";
-	};
-
-	i2c@138D0000 {
-		status = "disabled";
-	};
-
-	spi_0: spi@13920000 {
-		status = "disabled";
-	};
-
-	spi_1: spi@13930000 {
-		status = "disabled";
-	};
-
-	spi_2: spi@13940000 {
-		status = "disabled";
-	};
 };
diff --git a/arch/arm/boot/dts/exynos4210-smdkv310.dts b/arch/arm/boot/dts/exynos4210-smdkv310.dts
index 1beccc8f14ff..63610c3ba3af 100644
--- a/arch/arm/boot/dts/exynos4210-smdkv310.dts
+++ b/arch/arm/boot/dts/exynos4210-smdkv310.dts
@@ -26,7 +26,7 @@ memory {
 	};
 
 	chosen {
-		bootargs = "root=/dev/ram0 rw ramdisk=8192 initrd=0x41000000,8M console=ttySAC1,115200 init=/linuxrc";
+		bootargs = "root=/dev/ram0 rw ramdisk=8192 initrd=0x41000000,8M console=ttySAC2,115200 init=/linuxrc";
 	};
 
 	sdhci@12530000 {
@@ -40,6 +40,7 @@ sdhci@12530000 {
 			<&gpk2 4 2 3 3>,
 			<&gpk2 5 2 3 3>,
 			<&gpk2 6 2 3 3>;
+		status = "okay";
 	};
 
 	keypad@100A0000 {
@@ -47,6 +48,7 @@ keypad@100A0000 {
 		samsung,keypad-num-columns = <8>;
 		linux,keypad-no-autorepeat;
 		linux,keypad-wakeup;
+		status = "okay";
 
 		row-gpios = <&gpx2 0 3 3 0>,
 			    <&gpx2 1 3 3 0>;
@@ -128,6 +130,7 @@ i2c@13860000 {
 		samsung,i2c-max-bus-freq = <20000>;
 		gpios = <&gpd1 0 2 3 0>,
 			<&gpd1 1 2 3 0>;
+		status = "okay";
 
 		eeprom@50 {
 			compatible = "samsung,24ad0xd1";
@@ -140,58 +143,11 @@ eeprom@52 {
 		};
 	};
 
-	sdhci@12510000 {
-		status = "disabled";
-	};
-
-	sdhci@12520000 {
-		status = "disabled";
-	};
-
-	sdhci@12540000 {
-		status = "disabled";
-	};
-
-	i2c@13870000 {
-		status = "disabled";
-	};
-
-	i2c@13880000 {
-		status = "disabled";
-	};
-
-	i2c@13890000 {
-		status = "disabled";
-	};
-
-	i2c@138A0000 {
-		status = "disabled";
-	};
-
-	i2c@138B0000 {
-		status = "disabled";
-	};
-
-	i2c@138C0000 {
-		status = "disabled";
-	};
-
-	i2c@138D0000 {
-		status = "disabled";
-	};
-
-	spi_0: spi@13920000 {
-		status = "disabled";
-	};
-
-	spi_1: spi@13930000 {
-		status = "disabled";
-	};
-
 	spi_2: spi@13940000 {
 		gpios = <&gpc1 1 5 3 0>,
 			<&gpc1 3 5 3 0>,
 			<&gpc1 4 5 3 0>;
+		status = "okay";
 
 		w25x80@0 {
 			#address-cells = <1>;
diff --git a/arch/arm/boot/dts/exynos4210-trats.dts b/arch/arm/boot/dts/exynos4210-trats.dts
new file mode 100644
index 000000000000..73567b843e72
--- /dev/null
+++ b/arch/arm/boot/dts/exynos4210-trats.dts
@@ -0,0 +1,237 @@
+/*
+ * Samsung's Exynos4210 based Trats board device tree source
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ *
+ * Device tree source file for Samsung's Trats board which is based on
+ * Samsung's Exynos4210 SoC.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+/dts-v1/;
+/include/ "exynos4210.dtsi"
+
+/ {
+	model = "Samsung Trats based on Exynos4210";
+	compatible = "samsung,trats", "samsung,exynos4210";
+
+	memory {
+		reg =  <0x40000000 0x20000000
+			0x60000000 0x20000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttySAC2,115200N8 root=/dev/mmcblk0p5 rootwait earlyprintk panic=5";
+	};
+
+	vemmc_reg: voltage-regulator@0 {
+	        compatible = "regulator-fixed";
+		regulator-name = "VMEM_VDD_2.8V";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+		gpio = <&gpk0 2 1 0 0>;
+		enable-active-high;
+	};
+
+	sdhci_emmc: sdhci@12510000 {
+		bus-width = <8>;
+		non-removable;
+		broken-voltage;
+		gpios = <&gpk0 0 2 0 3>,
+			<&gpk0 1 2 0 3>,
+			<&gpk0 3 2 2 3>,
+			<&gpk0 4 2 2 3>,
+			<&gpk0 5 2 2 3>,
+			<&gpk0 6 2 2 3>,
+			<&gpk1 3 3 3 3>,
+			<&gpk1 4 3 3 3>,
+			<&gpk1 5 3 3 3>,
+			<&gpk1 6 3 3 3>;
+		vmmc-supply = <&vemmc_reg>;
+		status = "okay";
+	};
+
+	serial@13800000 {
+		status = "okay";
+	};
+
+	serial@13810000 {
+		status = "okay";
+	};
+
+	serial@13820000 {
+		status = "okay";
+	};
+
+	serial@13830000 {
+		status = "okay";
+	};
+
+	i2c@138B0000 {
+		samsung,i2c-sda-delay = <100>;
+		samsung,i2c-slave-addr = <0x10>;
+		samsung,i2c-max-bus-freq = <100000>;
+		gpios = <&gpb 6 3 3 0>,
+			<&gpb 7 3 3 0>;
+		status = "okay";
+
+		max8997_pmic@66 {
+			compatible = "maxim,max8997-pmic";
+
+			reg = <0x66>;
+
+			max8997,pmic-buck1-uses-gpio-dvs;
+			max8997,pmic-buck2-uses-gpio-dvs;
+			max8997,pmic-buck5-uses-gpio-dvs;
+
+			max8997,pmic-ignore-gpiodvs-side-effect;
+			max8997,pmic-buck125-default-dvs-idx = <0>;
+
+			max8997,pmic-buck125-dvs-gpios = <&gpx0 5 1 0 0>,
+						         <&gpx0 6 1 0 0>,
+							 <&gpl0 0 1 0 0>;
+
+			max8997,pmic-buck1-dvs-voltage = <1350000>, <1300000>,
+							 <1250000>, <1200000>,
+							 <1150000>, <1100000>,
+							 <1000000>, <950000>;
+
+			max8997,pmic-buck2-dvs-voltage = <1100000>, <1000000>,
+							 <950000>,  <900000>,
+							 <1100000>, <1000000>,
+							 <950000>,  <900000>;
+
+			max8997,pmic-buck5-dvs-voltage = <1200000>, <1200000>,
+							 <1200000>, <1200000>,
+							 <1200000>, <1200000>,
+							 <1200000>, <1200000>;
+
+			regulators {
+				valive_reg: LDO2 {
+				     regulator-name = "VALIVE_1.1V_C210";
+				     regulator-min-microvolt = <1100000>;
+				     regulator-max-microvolt = <1100000>;
+				     regulator-always-on;
+				};
+
+				vusb_reg: LDO3 {
+				     regulator-name = "VUSB_1.1V_C210";
+				     regulator-min-microvolt = <1100000>;
+				     regulator-max-microvolt = <1100000>;
+				};
+
+				vmipi_reg: LDO4 {
+				     regulator-name = "VMIPI_1.8V";
+				     regulator-min-microvolt = <1800000>;
+				     regulator-max-microvolt = <1800000>;
+				};
+
+				vpda_reg: LDO6 {
+				     regulator-name = "VCC_1.8V_PDA";
+				     regulator-min-microvolt = <1800000>;
+				     regulator-max-microvolt = <1800000>;
+				     regulator-always-on;
+				};
+
+				vcam_reg: LDO7 {
+				     regulator-name = "CAM_ISP_1.8V";
+				     regulator-min-microvolt = <1800000>;
+				     regulator-max-microvolt = <1800000>;
+				};
+
+				vusbdac_reg: LDO8 {
+				     regulator-name = "VUSB/VDAC_3.3V_C210";
+				     regulator-min-microvolt = <3300000>;
+				     regulator-max-microvolt = <3300000>;
+				};
+
+				vccpda_reg: LDO9 {
+				     regulator-name = "VCC_2.8V_PDA";
+				     regulator-min-microvolt = <2800000>;
+				     regulator-max-microvolt = <2800000>;
+				     regulator-always-on;
+				};
+
+				vpll_reg: LDO10 {
+				     regulator-name = "VPLL_1.1V_C210";
+				     regulator-min-microvolt = <1100000>;
+				     regulator-max-microvolt = <1100000>;
+				     regulator-always-on;
+				};
+
+				vcclcd_reg: LDO13 {
+				     regulator-name = "VCC_3.3V_LCD";
+				     regulator-min-microvolt = <3300000>;
+				     regulator-max-microvolt = <3300000>;
+				};
+
+				vlcd_reg: LDO15 {
+				     regulator-name = "VLCD_2.2V";
+				     regulator-min-microvolt = <2200000>;
+				     regulator-max-microvolt = <2200000>;
+				};
+
+				camsensor_reg: LDO16 {
+				     regulator-name = "CAM_SENSOR_IO_1.8V";
+				     regulator-min-microvolt = <1800000>;
+				     regulator-max-microvolt = <1800000>;
+				};
+
+				vddq_reg: LDO21 {
+				     regulator-name = "VDDQ_M1M2_1.2V";
+				     regulator-min-microvolt = <1200000>;
+				     regulator-max-microvolt = <1200000>;
+				     regulator-always-on;
+				};
+
+				varm_breg: BUCK1 {
+				     regulator-name = "VARM_1.2V_C210";
+				     regulator-min-microvolt = <900000>;
+				     regulator-max-microvolt = <1350000>;
+				     regulator-always-on;
+				};
+
+				vint_breg: BUCK2 {
+				     regulator-name = "VINT_1.1V_C210";
+				     regulator-min-microvolt = <900000>;
+				     regulator-max-microvolt = <1100000>;
+				     regulator-always-on;
+				};
+
+				camisp_breg: BUCK4 {
+				     regulator-name = "CAM_ISP_CORE_1.2V";
+				     regulator-min-microvolt = <1200000>;
+				     regulator-max-microvolt = <1200000>;
+				};
+
+				vmem_breg: BUCK5 {
+				     regulator-name = "VMEM_1.2V_C210";
+				     regulator-min-microvolt = <1200000>;
+				     regulator-max-microvolt = <1200000>;
+				     regulator-always-on;
+				};
+
+				vccsub_breg: BUCK7 {
+				     regulator-name = "VCC_SUB_2.0V";
+				     regulator-min-microvolt = <2000000>;
+				     regulator-max-microvolt = <2000000>;
+				     regulator-always-on;
+				};
+
+				safe1_sreg: ESAFEOUT1 {
+				     regulator-name = "SAFEOUT1";
+				     regulator-always-on;
+				};
+
+				safe2_sreg: ESAFEOUT2 {
+				     regulator-name = "SAFEOUT2";
+				     regulator-boot-on;
+				};
+			};
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/exynos4210.dtsi b/arch/arm/boot/dts/exynos4210.dtsi
index a4bd0c9a206e..214c557eda7f 100644
--- a/arch/arm/boot/dts/exynos4210.dtsi
+++ b/arch/arm/boot/dts/exynos4210.dtsi
@@ -19,35 +19,23 @@
  * published by the Free Software Foundation.
 */
 
-/include/ "skeleton.dtsi"
+/include/ "exynos4.dtsi"
 /include/ "exynos4210-pinctrl.dtsi"
 
 / {
 	compatible = "samsung,exynos4210";
-	interrupt-parent = <&gic>;
 
 	aliases {
-		spi0 = &spi_0;
-		spi1 = &spi_1;
-		spi2 = &spi_2;
 		pinctrl0 = &pinctrl_0;
 		pinctrl1 = &pinctrl_1;
 		pinctrl2 = &pinctrl_2;
 	};
 
 	gic:interrupt-controller@10490000 {
-		compatible = "arm,cortex-a9-gic";
-		#interrupt-cells = <3>;
-		interrupt-controller;
 		cpu-offset = <0x8000>;
-		reg = <0x10490000 0x1000>, <0x10480000 0x100>;
 	};
 
 	combiner:interrupt-controller@10440000 {
-		compatible = "samsung,exynos4210-combiner";
-		#interrupt-cells = <2>;
-		interrupt-controller;
-		reg = <0x10440000 0x1000>;
 		interrupts = <0 0 0>, <0 1 0>, <0 2 0>, <0 3 0>,
 			     <0 4 0>, <0 5 0>, <0 6 0>, <0 7 0>,
 			     <0 8 0>, <0 9 0>, <0 10 0>, <0 11 0>,
@@ -75,10 +63,10 @@ wakup_eint: wakeup-interrupt-controller {
 			interrupt-controller;
 			#interrupt-cells = <2>;
 			interrupts = <0 16 0>, <0 17 0>, <0 18 0>, <0 19 0>,
-					<0 20 0>, <0 21 0>, <0 22 0>, <0 23 0>,
-					<0 24 0>, <0 25 0>, <0 26 0>, <0 27 0>,
-					<0 28 0>, <0 29 0>, <0 30 0>, <0 31 0>,
-					<0 32 0>;
+				     <0 20 0>, <0 21 0>, <0 22 0>, <0 23 0>,
+				     <0 24 0>, <0 25 0>, <0 26 0>, <0 27 0>,
+				     <0 28 0>, <0 29 0>, <0 30 0>, <0 31 0>,
+				     <0 32 0>;
 		};
 	};
 
@@ -87,170 +75,6 @@ pinctrl_2: pinctrl@03860000 {
 		reg = <0x03860000 0x1000>;
 	};
 
-	watchdog@10060000 {
-		compatible = "samsung,s3c2410-wdt";
-		reg = <0x10060000 0x100>;
-		interrupts = <0 43 0>;
-	};
-
-	rtc@10070000 {
-		compatible = "samsung,s3c6410-rtc";
-		reg = <0x10070000 0x100>;
-		interrupts = <0 44 0>, <0 45 0>;
-	};
-
-	keypad@100A0000 {
-		compatible = "samsung,s5pv210-keypad";
-		reg = <0x100A0000 0x100>;
-		interrupts = <0 109 0>;
-	};
-
-	sdhci@12510000 {
-		compatible = "samsung,exynos4210-sdhci";
-		reg = <0x12510000 0x100>;
-		interrupts = <0 73 0>;
-	};
-
-	sdhci@12520000 {
-		compatible = "samsung,exynos4210-sdhci";
-		reg = <0x12520000 0x100>;
-		interrupts = <0 74 0>;
-	};
-
-	sdhci@12530000 {
-		compatible = "samsung,exynos4210-sdhci";
-		reg = <0x12530000 0x100>;
-		interrupts = <0 75 0>;
-	};
-
-	sdhci@12540000 {
-		compatible = "samsung,exynos4210-sdhci";
-		reg = <0x12540000 0x100>;
-		interrupts = <0 76 0>;
-	};
-
-	serial@13800000 {
-		compatible = "samsung,exynos4210-uart";
-		reg = <0x13800000 0x100>;
-		interrupts = <0 52 0>;
-	};
-
-	serial@13810000 {
-		compatible = "samsung,exynos4210-uart";
-		reg = <0x13810000 0x100>;
-		interrupts = <0 53 0>;
-	};
-
-	serial@13820000 {
-		compatible = "samsung,exynos4210-uart";
-		reg = <0x13820000 0x100>;
-		interrupts = <0 54 0>;
-	};
-
-	serial@13830000 {
-		compatible = "samsung,exynos4210-uart";
-		reg = <0x13830000 0x100>;
-		interrupts = <0 55 0>;
-	};
-
-	i2c@13860000 {
-		compatible = "samsung,s3c2440-i2c";
-		reg = <0x13860000 0x100>;
-		interrupts = <0 58 0>;
-	};
-
-	i2c@13870000 {
-		compatible = "samsung,s3c2440-i2c";
-		reg = <0x13870000 0x100>;
-		interrupts = <0 59 0>;
-	};
-
-	i2c@13880000 {
-		compatible = "samsung,s3c2440-i2c";
-		reg = <0x13880000 0x100>;
-		interrupts = <0 60 0>;
-	};
-
-	i2c@13890000 {
-		compatible = "samsung,s3c2440-i2c";
-		reg = <0x13890000 0x100>;
-		interrupts = <0 61 0>;
-	};
-
-	i2c@138A0000 {
-		compatible = "samsung,s3c2440-i2c";
-		reg = <0x138A0000 0x100>;
-		interrupts = <0 62 0>;
-	};
-
-	i2c@138B0000 {
-		compatible = "samsung,s3c2440-i2c";
-		reg = <0x138B0000 0x100>;
-		interrupts = <0 63 0>;
-	};
-
-	i2c@138C0000 {
-		compatible = "samsung,s3c2440-i2c";
-		reg = <0x138C0000 0x100>;
-		interrupts = <0 64 0>;
-	};
-
-	i2c@138D0000 {
-		compatible = "samsung,s3c2440-i2c";
-		reg = <0x138D0000 0x100>;
-		interrupts = <0 65 0>;
-	};
-
-	spi_0: spi@13920000 {
-		compatible = "samsung,exynos4210-spi";
-		reg = <0x13920000 0x100>;
-		interrupts = <0 66 0>;
-		tx-dma-channel = <&pdma0 7>; /* preliminary */
-		rx-dma-channel = <&pdma0 6>; /* preliminary */
-		#address-cells = <1>;
-		#size-cells = <0>;
-	};
-
-	spi_1: spi@13930000 {
-		compatible = "samsung,exynos4210-spi";
-		reg = <0x13930000 0x100>;
-		interrupts = <0 67 0>;
-		tx-dma-channel = <&pdma1 7>; /* preliminary */
-		rx-dma-channel = <&pdma1 6>; /* preliminary */
-		#address-cells = <1>;
-		#size-cells = <0>;
-	};
-
-	spi_2: spi@13940000 {
-		compatible = "samsung,exynos4210-spi";
-		reg = <0x13940000 0x100>;
-		interrupts = <0 68 0>;
-		tx-dma-channel = <&pdma0 9>; /* preliminary */
-		rx-dma-channel = <&pdma0 8>; /* preliminary */
-		#address-cells = <1>;
-		#size-cells = <0>;
-	};
-
-	amba {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		compatible = "arm,amba-bus";
-		interrupt-parent = <&gic>;
-		ranges;
-
-		pdma0: pdma@12680000 {
-			compatible = "arm,pl330", "arm,primecell";
-			reg = <0x12680000 0x1000>;
-			interrupts = <0 35 0>;
-		};
-
-		pdma1: pdma@12690000 {
-			compatible = "arm,pl330", "arm,primecell";
-			reg = <0x12690000 0x1000>;
-			interrupts = <0 36 0>;
-		};
-	};
-
 	gpio-controllers {
 		#address-cells = <1>;
 		#size-cells = <1>;
diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts
index 8a5e348793c7..62e1039fb30e 100644
--- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
+++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
@@ -21,7 +21,7 @@ memory {
 	};
 
 	chosen {
-		bootargs = "root=/dev/ram0 rw ramdisk=8192 console=ttySAC1,115200";
+		bootargs = "root=/dev/ram0 rw ramdisk=8192 initrd=0x41000000,8M console=ttySAC2,115200 init=/linuxrc";
 	};
 
 	i2c@12C60000 {
diff --git a/arch/arm/mach-exynos/Makefile.boot b/arch/arm/mach-exynos/Makefile.boot
index 31bd181b0514..a79d999725cb 100644
--- a/arch/arm/mach-exynos/Makefile.boot
+++ b/arch/arm/mach-exynos/Makefile.boot
@@ -1,5 +1,5 @@
    zreladdr-y	+= 0x40008000
 params_phys-y	:= 0x40000100
 
-dtb-$(CONFIG_MACH_EXYNOS4_DT) += exynos4210-origen.dtb exynos4210-smdkv310.dtb
+dtb-$(CONFIG_MACH_EXYNOS4_DT) += exynos4210-origen.dtb exynos4210-smdkv310.dtb exynos4210-trats.dtb
 dtb-$(CONFIG_MACH_EXYNOS5_DT) += exynos5250-smdk5250.dtb
diff --git a/arch/arm/mach-exynos/mach-exynos4-dt.c b/arch/arm/mach-exynos/mach-exynos4-dt.c
index b2b5d5faa748..e58d786faf78 100644
--- a/arch/arm/mach-exynos/mach-exynos4-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos4-dt.c
@@ -1,5 +1,5 @@
 /*
- * Samsung's Exynos4210 flattened device tree enabled machine
+ * Samsung's EXYNOS4 flattened device tree enabled machine
  *
  * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
  *		http://www.samsung.com
@@ -36,7 +36,7 @@
  * at some point, the drivers should be capable of parsing all the platform
  * data from the device tree.
  */
-static const struct of_dev_auxdata exynos4210_auxdata_lookup[] __initconst = {
+static const struct of_dev_auxdata exynos4_auxdata_lookup[] __initconst = {
 	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART0,
 				"exynos4210-uart.0", NULL),
 	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART1,
@@ -55,6 +55,20 @@ static const struct of_dev_auxdata exynos4210_auxdata_lookup[] __initconst = {
 				"exynos4-sdhci.3", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(0),
 				"s3c2440-i2c.0", NULL),
+	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(1),
+				"s3c2440-i2c.1", NULL),
+	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(2),
+				"s3c2440-i2c.2", NULL),
+	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(3),
+				"s3c2440-i2c.3", NULL),
+	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(4),
+				"s3c2440-i2c.4", NULL),
+	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(5),
+				"s3c2440-i2c.5", NULL),
+	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(6),
+				"s3c2440-i2c.6", NULL),
+	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(7),
+				"s3c2440-i2c.7", NULL),
 	OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI0,
 				"exynos4210-spi.0", NULL),
 	OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI1,
@@ -66,19 +80,19 @@ static const struct of_dev_auxdata exynos4210_auxdata_lookup[] __initconst = {
 	{},
 };
 
-static void __init exynos4210_dt_map_io(void)
+static void __init exynos4_dt_map_io(void)
 {
 	exynos_init_io(NULL, 0);
 	s3c24xx_init_clocks(24000000);
 }
 
-static void __init exynos4210_dt_machine_init(void)
+static void __init exynos4_dt_machine_init(void)
 {
 	of_platform_populate(NULL, of_default_bus_match_table,
-				exynos4210_auxdata_lookup, NULL);
+				exynos4_auxdata_lookup, NULL);
 }
 
-static char const *exynos4210_dt_compat[] __initdata = {
+static char const *exynos4_dt_compat[] __initdata = {
 	"samsung,exynos4210",
 	NULL
 };
@@ -86,11 +100,11 @@ static char const *exynos4210_dt_compat[] __initdata = {
 DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
 	/* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
 	.init_irq	= exynos4_init_irq,
-	.map_io		= exynos4210_dt_map_io,
+	.map_io		= exynos4_dt_map_io,
 	.handle_irq	= gic_handle_irq,
-	.init_machine	= exynos4210_dt_machine_init,
+	.init_machine	= exynos4_dt_machine_init,
 	.init_late	= exynos_init_late,
 	.timer		= &exynos4_timer,
-	.dt_compat	= exynos4210_dt_compat,
+	.dt_compat	= exynos4_dt_compat,
 	.restart        = exynos4_restart,
 MACHINE_END