Merge branch 'tracking-samslt-dt' into merge-linux-linaro

18 files changed, 1099 insertions, 91 deletions

diff --git a/Documentation/devicetree/bindings/arm/samsung/wakeup-eint.txt b/Documentation/devicetree/bindings/arm/samsung/wakeup-eint.txt
new file mode 100644
index 000000000000..52aa0493914a
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/samsung/wakeup-eint.txt
@@ -0,0 +1,152 @@
+* Samsung GPIO Wakeup Interrupt Controller
+
+This document is split into following sections.
+
+[1] Samsung Exynos4 GPIO Wakeup Interrupt Source Controller
+[2] Samsung Exynos5 GPIO Wakeup Interrupt Source Controller
+
+
+[1] Samsung Exynos4 GPIO Wakeup Interrupt Source Controller
+
+Samsung Exynos4 processor supports 32 external wakeup interrupt sources. First
+16 of these interrupts are directly connected to GIC and the rest 16 of the
+interrupts are grouped together to deliver a single interrupt to GIC.
+
+Required properties:
+
+    - compatible: should be "samsung,exynos4210-wakeup-eint".
+
+    - reg: physical base address of the controller and length of memory
+      mapped region.
+
+    - interrupt-controller: Identifies the node as an interrupt controller.
+
+    - interrupt-cells: Specifies the number of cells required to specify the
+      interrupt source number. The value of should be <2>. The first cell
+      represents the wakeup interrupt source number and the second cell
+      should be zero (currently unused).
+
+    - interrupts: List of interrupts generated by the gpio wakeup interrupt
+      controller which are connected to a parent interrupt controller. The
+      format of the interrupt specifier depends on the interrupt parent
+      controller.
+
+Optional properties:
+
+    - interrupt-parent: phandle of the parent interrupt controller, required
+      if not inheriting the interrupt parent from the parent node.
+
+Example:
+
+	The following example is from the Exynos4210 dtsi file.
+
+	wakeup_eint: interrupt-controller-wakeup-eint {
+		compatible = "samsung,exynos4210-wakeup-eint";
+		reg = <0x11000000 0x1000>;
+		#interrupt-cells = <2>;
+		interrupt-controller;
+		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>;
+	};
+
+
+[2] Samsung Exynos5 GPIO Wakeup Interrupt Source Controller
+
+Samsung Exynos5 processor supports 32 external wakeup interrupt sources. First
+16 of these interrupts are directly connected to GIC and the rest 16 of the
+interrupts are grouped together to deliver a single interrupt to interrupt
+combiner controller.
+
+Since the wakeup interrupts has two interrupt parents, a interrupt nexus
+child node is used that includes a interrupt-map used to translate wakeup
+interrupt specifiers into gic and combiner domain interrupts.
+
+Required properties:
+
+    - compatible: should be "samsung,exynos5210-wakeup-eint".
+
+    - reg: physical base address of the controller and length of memory
+      mapped region.
+
+    - interrupt-controller: Identifies the node as an interrupt controller.
+
+    - interrupt-cells: Specifies the number of cells required to specify the
+      interrupt source number. The value of should be <2>. The first cell
+      represents the wakeup interrupt source number and the second cell
+      should be zero (currently unused).
+
+    - interrupts: List of interrupts generated by the gpio wakeup interrupt
+      controller. Since both gic and combiner controllers are interrupt
+      parents, a interrupt nexus child node is used to translate the interrupt
+      specifiers into respective gic and combiner interrupt domains (see below).
+      The interrupt specifier should be two cells - the first cell should be the
+      interrupt number originating from the wakeup controller and the second
+      cell should be zero (unused).
+
+    - interrupt-parent: The phandle of the interrupt nexus child node.
+
+    - interrupt-nexus child node: This node is used to translate the interrupt
+      specifiers of the wakeup interrupt controller node to the respecitive
+      gic or combiner interrupt domain. The interrupt nexus node should include
+      the following properties.
+
+      - interrupt-cells: Specifies the number of cells required to specify the
+        interrupt source number. The value of should be <2>. The first cell
+        represents the wakeup interrupt source number and the second cell
+        should be zero (currently unused).
+
+      - #address-cells: value of this property should be zero.
+
+      - #size-cells: value of this property should be zero.
+
+      - interrupt-map: The interrpt-map specifies how interrupt specifiers are
+        translated. There should be a interrupt-map entry for each interrupt
+        generated by the wakeup interrupt controller. The format of each entry
+        in the interrupt map should be
+
+              <#intr 0 parent-phandle parent-interrupt-specifier>
+
+	 where #intr is one of the entries in the 'interrupts' property of the
+        parent node.
+
+
+Example:
+
+	wakeup_eint: interrupt-controller@11400000 {
+		compatible = "samsung,exynos5210-wakeup-eint";
+		reg = <0x11400000 0x1000>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		interrupt-parent = <&eint_nexus>;
+		interrupts = <0x0 0>, <0x1 0>, <0x2 0>, <0x3 0>,
+			     <0x4 0>, <0x5 0>, <0x6 0>, <0x7 0>,
+			     <0x8 0>, <0x9 0>, <0xa 0>, <0xb 0>,
+			     <0xc 0>, <0xd 0>, <0xe 0>, <0xf 0>,
+			     <0x10 0>;
+
+                wakeup_map: interrupt-map {
+                        #interrupt-cells = <2>;
+                        #address-cells = <0>;
+                        #size-cells = <0>;
+                        interrupt-map = <0x0 0 &combiner 23 0>,
+                                        <0x1 0 &combiner 24 0>,
+                                        <0x2 0 &combiner 25 0>,
+                                        <0x3 0 &combiner 25 1>,
+                                        <0x4 0 &combiner 26 0>,
+                                        <0x5 0 &combiner 26 1>,
+                                        <0x6 0 &combiner 27 0>,
+                                        <0x7 0 &combiner 27 1>,
+                                        <0x8 0 &combiner 28 0>,
+                                        <0x9 0 &combiner 28 1>,
+                                        <0xa 0 &combiner 29 0>,
+                                        <0xb 0 &combiner 29 1>,
+                                        <0xc 0 &combiner 30 0>,
+                                        <0xd 0 &combiner 30 1>,
+                                        <0xe 0 &combiner 31 0>,
+                                        <0xf 0 &combiner 31 1>,
+                                        <0x10 0 &gic 0 32 0>;
+                };
+        };
diff --git a/Documentation/devicetree/bindings/mmc/samsung-sdhci.txt b/Documentation/devicetree/bindings/mmc/samsung-sdhci.txt
new file mode 100644
index 000000000000..8cbdd2941d4e
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/samsung-sdhci.txt
@@ -0,0 +1,70 @@
+* Samsung's SDHCI Controller device tree bindings
+
+Samsung's SDHCI controller is used as a connectivity interface with external
+MMC, SD and eMMC storage mediums.
+
+Required SoC Specific Properties:
+- compatible: should be one of the following
+  - "samsung,s3c6410-sdhci": For controllers compatible with s3c6410 sdhci
+    controller.
+  - "samsung,exynos4210-sdhci": For controller compatible with Exynos4 sdhci
+    controller.
+
+- reg: physical base address of the controller and length of memory mapped
+  region.
+
+- interrupts: The interrupt number to the cpu. The interrupt specifier format
+  depends on the interrupt controller.
+
+
+Required Board Specific Properties:
+- gpios: Should specify the gpios used for clock, command and data lines. The
+  gpio specifier format depends on the gpio controller. Note: There is no
+  particular order in which the gpio's have to be listed.
+
+
+Optional Board Specific Properties:
+- samsung,sdhci-bus-width: Number of data lines connected to the controller.
+  Note: This excludes the clock,command and card detect lines. If this property
+  is not specified, default value is 1.
+
+- samsung,cd-gpio-invert: If 'samsung,sdhci-cd-gpio' card detect method is
+  selected, this property can be optionally specified to invert the value of
+  external card detect gpio line.
+
+- One of the following properties for card detect type.
+  - samsung,sdhci-cd-internal: Card detect line from the card slot  is
+    connected to the card detect pad of the sdhci controller. A gpio is
+    used for this connection (with possible pin function settings).
+  - samsung,sdhci-cd-gpio: A gpio line (with possible pin function settings)
+    is used a card detect line. This gpio line is not connected to card detect
+    pad of the sdhci controller.
+  - samsung,sdhci-cd-none: There is no card detect line. Polling is used to
+    detect the presence of the card. (DEFAULT, if no card detect property
+    is specified).
+  - samsung,sdhci-cd-permanent: There is no card detect line. The card is
+    permanently connected to the sdhci controller.
+
+- gpio-cd: The gpio to be used as card detect line for
+  'samsung,sdhci-cd-internal' or 'samsung,sdhci-cd-gpio' card detection method.
+  The gpio specifier format depends on the gpio controller.
+
+Example:
+	sdhci@12530000 {
+		compatible = "samsung,exynos4210-sdhci";
+		reg = <0x12530000 0x100>;
+		interrupts = <139>;
+		samsung,sdhci-bus-width = <4>;
+		samsung,sdhci-cd-internal;
+		gpio-cd = <&gpk2 2 2 3 3>;
+		gpios = <&gpk2 0 2 0 3>,  /* clock line */
+			<&gpk2 1 2 0 3>,  /* command line */
+			<&gpk2 3 2 3 3>,  /* data line 0 */
+			<&gpk2 4 2 3 3>,  /* data line 1 */
+			<&gpk2 5 2 3 3>,  /* data line 2 */
+			<&gpk2 6 2 3 3>;  /* data line 3 */
+	};
+
+	Note: This example shows both SoC specific and board specific properties
+	in a single device node. The properties can be actually be seperated
+	into SoC specific node and board specific node.
diff --git a/Documentation/devicetree/bindings/regulator/max8997-pmic.txt b/Documentation/devicetree/bindings/regulator/max8997-pmic.txt
new file mode 100644
index 000000000000..90a730bb0e95
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/max8997-pmic.txt
@@ -0,0 +1,133 @@
+* Maxim MAX8997 Voltage and Current Regulator
+
+The Maxim MAX8997 is a multi-function device which includes volatage and
+current regulators, rtc, charger controller and other sub-blocks. It is
+interfaced to the host controller using a i2c interface. Each sub-block is
+addressed by the host system using different i2c slave address. This document
+describes the bindings for 'pmic' sub-block of max8997.
+
+Required properties:
+- compatible: Should be "maxim,max8997-pmic".
+- reg: Specifies the i2c slave address of the pmic block. It should be 0x66.
+
+- max8997,pmic-buck1-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
+  units for buck1 when changing voltage using gpio dvs. Refer to [1] below
+  for additional information.
+
+- max8997,pmic-buck2-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
+  units for buck2 when changing voltage using gpio dvs. Refer to [1] below
+  for additional information.
+
+- max8997,pmic-buck5-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
+  units for buck5 when changing voltage using gpio dvs. Refer to [1] below
+  for additional information.
+
+[1] If none of the 'max8997,pmic-buck[1/2/5]-uses-gpio-dvs' optional
+    property is specified, the 'max8997,pmic-buck[1/2/5]-dvs-voltage'
+    property should specify atleast one voltage level (which would be a
+    safe operating voltage).
+
+    If either of the 'max8997,pmic-buck[1/2/5]-uses-gpio-dvs' optional
+    property is specified, then all the eigth voltage values for the
+    'max8997,pmic-buck[1/2/5]-dvs-voltage' should be specified.
+
+Optional properties:
+- interrupt-parent: Specifies the phandle of the interrupt controller to which
+  the interrupts from max8997 are delivered to.
+- interrupts: Interrupt specifiers for two interrupt sources.
+  - First interrupt specifier is for 'irq1' interrupt.
+  - Second interrupt specifier is for 'alert' interrupt.
+- max8997,pmic-buck1-uses-gpio-dvs: 'buck1' can be controlled by gpio dvs.
+- max8997,pmic-buck2-uses-gpio-dvs: 'buck2' can be controlled by gpio dvs.
+- max8997,pmic-buck5-uses-gpio-dvs: 'buck5' can be controlled by gpio dvs.
+
+Additional properties required if either of the optional properties are used:
+- max8997,pmic-ignore-gpiodvs-side-effect: When GPIO-DVS mode is used for
+  multiple bucks, changing the voltage value of one of the bucks may affect
+  that of another buck, which is the side effect of the change (set_voltage).
+  Use this property to ignore such side effects and change the voltage.
+
+- max8997,pmic-buck125-default-dvs-idx: Default voltage setting selected from
+  the possible 8 options selectable by the dvs gpios. The value of this
+  property should be between 0 and 7. If not specified or if out of range, the
+  default value of this property is set to 0.
+
+- max8997,pmic-buck125-dvs-gpios: GPIO specifiers for three host gpio's used
+  for dvs. The format of the gpio specifier depends in the gpio controller.
+
+
+Regulators: The regulators of max8997 that have to be instantiated should be
+included in a sub-node named 'regulators'. Regulator nodes included in this
+sub-node should be of the format as below. Note: The 'n' in LDOn and BUCKn
+represents the LDO or BUCK number as per the datasheet of max8997.
+
+    For LDO's:
+		LDOn {
+			standard regulator bindings here
+		};
+
+    For BUCK's:
+		BUCKn {
+			standard regulator bindings here
+		};
+
+The bindings inside the regulator nodes use the standard regulator bindings
+which are documented elsewhere.
+
+Example:
+
+	max8997_pmic@66 {
+		compatible = "maxim,max8997-pmic";
+		interrupt-parent = <&wakeup_eint>;
+		reg = <0x66>;
+		interrupts = <4 0>, <3 0>;
+
+		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 0 1 0 0>, /* SET1 */
+						 <&gpx0 1 1 0 0>, /* SET2 */
+						 <&gpx0 2 1 0 0>; /* SET3 */
+
+		max8997,pmic-buck1-dvs-voltage = <1350000>, <1300000>,
+						 <1250000>, <1200000>,
+						 <1150000>, <1100000>,
+						 <1000000>, <950000>;
+
+		max8997,pmic-buck2-dvs-voltage = <1100000>, <1100000>,
+				    		 <1100000>, <1100000>,
+						 <1000000>, <1000000>,
+						 <1000000>, <1000000>;
+
+		max8997,pmic-buck5-dvs-voltage = <1200000>, <1200000>,
+						 <1200000>, <1200000>,
+						 <1200000>, <1200000>,
+						 <1200000>, <1200000>;
+
+		regulators {
+			ldo1_reg: LDO1 {
+				regulator-name = "VDD_ABB_3.3V";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+			};
+
+			ldo2_reg: LDO2 {
+				regulator-name = "VDD_ALIVE_1.1V";
+				regulator-min-microvolt = <1100000>;
+				regulator-max-microvolt = <1100000>;
+				regulator-always-on;
+			};
+
+			buck1_reg: BUCK1 {
+				regulator-name = "VDD_ARM_1.2V";
+				regulator-min-microvolt = <950000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-always-on;
+				regulator-boot-on;
+			};
+		};
+	};
diff --git a/arch/arm/boot/dts/exynos4210-origen.dts b/arch/arm/boot/dts/exynos4210-origen.dts
index b8c476384eef..75a9df50ab4d 100644
--- a/arch/arm/boot/dts/exynos4210-origen.dts
+++ b/arch/arm/boot/dts/exynos4210-origen.dts
@@ -55,6 +55,66 @@
 			<&gpk0 6 2 3 3>;
 	};
 
+	lcd_fimd0: lcd_panel0 {
+		compatible = "lcd-powercontrol";
+		vcc-lcd-supply = <&buck7_reg>;
+		lcd-reset-gpio = <&gpe3 4 1 0 0>;
+		lcd-htiming = <64 16 48 1024>;
+		lcd-vtiming = <64 16 3 600>;
+	};
+
+	fimd@11C00000 {
+		samsung,fimd-display = <&lcd_fimd0>;
+		samsung,fimd-vidout-rgb;
+		samsung,fimd-inv-hsync;
+		samsung,fimd-inv-vsync;
+		samsung,fimd-inv-vclk;
+		samsung,fimd-frame-rate = <60>;
+
+		gpios = <&gpf0 0 2 0 0>,
+			<&gpf0 1 2 0 0>,
+			<&gpf0 2 2 0 0>,
+			<&gpf0 3 2 0 0>,
+			<&gpf0 4 2 0 0>,
+			<&gpf0 5 2 0 0>,
+			<&gpf0 6 2 0 0>,
+			<&gpf0 7 2 0 0>,
+			<&gpf1 0 2 0 0>,
+			<&gpf1 1 2 0 0>,
+			<&gpf1 2 2 0 0>,
+			<&gpf1 3 2 0 0>,
+			<&gpf1 4 2 0 0>,
+			<&gpf1 5 2 0 0>,
+			<&gpf1 6 2 0 0>,
+			<&gpf1 7 2 0 0>,
+			<&gpf2 0 2 0 0>,
+			<&gpf2 1 2 0 0>,
+			<&gpf2 2 2 0 0>,
+			<&gpf2 3 2 0 0>,
+			<&gpf2 4 2 0 0>,
+			<&gpf2 5 2 0 0>,
+			<&gpf2 6 2 0 0>,
+			<&gpf2 7 2 0 0>,
+			<&gpf3 0 2 0 0>,
+			<&gpf3 1 2 0 0>,
+			<&gpf3 2 2 0 0>,
+			<&gpf3 3 2 0 0>;
+
+		window0 {
+			samsung,fimd-win-id = <0>;
+			samsung,fimd-win-bpp = <32 24>;
+			samsung,fimd-win-res = <1024 600>;
+			samsung,fimd-win-vres = <1024 600>;
+		};
+
+		window1 {
+			samsung,fimd-win-id = <1>;
+			samsung,fimd-win-bpp = <32 24>;
+			samsung,fimd-win-res = <1024 600>;
+			samsung,fimd-win-vres = <1024 600>;
+		};
+	};
+
 	gpio_keys {
 		compatible = "gpio-keys";
 		#address-cells = <1>;
@@ -104,7 +164,89 @@
 	};
 
 	i2c@13860000 {
-		status = "disabled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		samsung,i2c-sda-delay = <100>;
+		samsung,i2c-max-bus-freq = <20000>;
+		gpios = <&gpd1 0 2 3 0>,
+			<&gpd1 1 2 3 0>;
+
+		max8997_pmic@66 {
+			compatible = "maxim,max8997-pmic";
+			interrupt-parent = <&wakeup_eint>;
+			reg = <0x66>;
+			interrupts = <4 0>, <3 0>;
+
+			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 0 1 0 0>, /* SET1 */
+							 <&gpx0 1 1 0 0>, /* SET2 */
+							 <&gpx0 2 1 0 0>; /* SET3 */
+			max8997,pmic-buck1-dvs-voltage = <1350000>, <1300000>,
+							 <1250000>, <1200000>,
+							 <1150000>, <1100000>,
+							 <1000000>, <950000>;
+			max8997,pmic-buck2-dvs-voltage = <1100000>, <1100000>,
+							 <1100000>, <1100000>,
+							 <1000000>, <1000000>,
+							 <1000000>, <1000000>;
+			max8997,pmic-buck5-dvs-voltage = <1200000>, <1200000>,
+							 <1200000>, <1200000>,
+							 <1200000>, <1200000>,
+							 <1200000>, <1200000>;
+
+			regulators {
+				ldo1_reg: LDO1 {
+					regulator-name = "VDD_ABB_3.3V";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+				};
+
+				ldo2_reg: LDO2 {
+					regulator-name = "VDD_ALIVE_1.1V";
+					regulator-min-microvolt = <1100000>;
+					regulator-max-microvolt = <1100000>;
+					regulator-always-on;
+				};
+
+				ldo3_reg: LDO3 {
+					regulator-name = "VMIPI_1.1V";
+					regulator-min-microvolt = <1100000>;
+					regulator-max-microvolt = <1100000>;
+				};
+
+				ldo4_reg: LDO4 {
+					regulator-name = "VDD_RTC_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt	= <1800000>;
+					regulator-always-on;
+				};
+
+				ldo6_reg: LDO6 {
+					regulator-name = "VMIPI_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt	= <1800000>;
+					regulator-always-on;
+				};
+
+				ldo7_reg: LDO7 {
+					regulator-name = "VDD_AUD_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt	= <1800000>;
+					regulator-always-on;
+				};
+
+				buck7_reg: BUCK7 {
+					regulator-name = "vcc-lcd";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-boot-on;
+				};
+			};
+		};
 	};
 
 	i2c@13870000 {
@@ -134,4 +276,40 @@
 	i2c@138D0000 {
 		status = "disabled";
 	};
+
+	pd_cam: pd-cam {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10023C00 0x10>;
+	};
+
+	pd_tv: pd-tv {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10023C20 0x10>;
+	};
+
+	pd_mfc: pd-mfc {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10023C40 0x10>;
+	};
+
+	pd_g3d: pd-g3d {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10023C60 0x10>;
+	};
+
+	pd_lcd0: pd-lcd0 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10023C80 0x10>;
+	};
+
+	pd_lcd1: pd-lcd1 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10023CA0 0x10>;
+	};
+
+	pd_gps: pd-gps {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10023CE0 0x10>;
+		samsung,exynos4210-pd_off;
+	};
 };
diff --git a/arch/arm/boot/dts/exynos4210.dtsi b/arch/arm/boot/dts/exynos4210.dtsi
index a1dd2ee83753..c33de8ae88f3 100644
--- a/arch/arm/boot/dts/exynos4210.dtsi
+++ b/arch/arm/boot/dts/exynos4210.dtsi
@@ -33,6 +33,42 @@
 		reg = <0x10490000 0x1000>, <0x10480000 0x100>;
 	};
 
+	combiner:interrupt-controller@10440000 {
+		compatible = "samsung,exynos4210-combiner";
+		#interrupt-cells = <2>;
+		interrupt-controller;
+		samsung,combiner-nr = <16>;
+		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>,
+			     <0 12 0>, <0 13 0>, <0 14 0>, <0 15 0>;
+	};
+
+	wakeup_eint: interrupt-controller-wakeup-eint {
+		compatible = "samsung,exynos4210-wakeup-eint";
+		reg = <0x11000000 0x1000>;
+		#interrupt-cells = <2>;
+		interrupt-controller;
+		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>;
+	};
+
+	power-domain-lcd0 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10023C00 0x10>;
+	};
+
+	fimd@11C00000 {
+		compatible = "samsung,exynos4210-fimd";
+		interrupt-parent = <&combiner>;
+		reg = <0x11C00000 0x8000>;
+		interrupts = <11 1>, <11 0>, <11 2>;
+	};
+
 	watchdog@10060000 {
 		compatible = "samsung,s3c2410-wdt";
 		reg = <0x10060000 0x100>;
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index cb4b8602d0df..f7cabdb9168c 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -409,6 +409,8 @@ config MACH_EXYNOS4_DT
 	select USE_OF
 	select ARM_AMBA
 	select HAVE_SAMSUNG_KEYPAD if INPUT_KEYBOARD
+	select SAMSUNG_DEV_BACKLIGHT
+	select SAMSUNG_DEV_PWM
 	help
 	  Machine support for Samsung Exynos4 machine with device tree enabled.
 	  Select this if a fdt blob is available for the Exynos4 SoC based board.
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 39a95f311736..29a2f9901b0d 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -64,6 +64,8 @@ static void exynos4_init_clocks(int xtal);
 static void exynos5_init_clocks(int xtal);
 static void exynos_init_uarts(struct s3c2410_uartcfg *cfg, int no);
 static int exynos_init(void);
+static int exynos_init_irq_eint(struct device_node *np,
+				struct device_node *parent);
 
 static struct cpu_table cpu_ids[] __initdata = {
 	{
@@ -602,6 +604,8 @@ static const struct of_device_id exynos4_dt_irq_match[] = {
 	{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
 	{ .compatible = "samsung,exynos4210-combiner",
 			.data = combiner_of_init, },
+	{ .compatible = "samsung,exynos4210-wakeup-eint",
+			.data = exynos_init_irq_eint, },
 	{},
 };
 #endif
@@ -619,8 +623,10 @@ void __init exynos4_init_irq(void)
 		of_irq_init(exynos4_dt_irq_match);
 #endif
 
-	if (!of_have_populated_dt())
+	if (!of_have_populated_dt()) {
 		combiner_init(S5P_VA_COMBINER_BASE, NULL);
+		exynos_init_irq_eint(NULL, NULL);
+	}
 
 	/*
 	 * The parameters of s5p_init_irq() are for VIC init.
@@ -632,10 +638,31 @@ void __init exynos4_init_irq(void)
 
 void __init exynos5_init_irq(void)
 {
+	int irq;
+	struct device_node *np;
+
 #ifdef CONFIG_OF
 	of_irq_init(exynos4_dt_irq_match);
 #endif
 	/*
+	 * The Exynos5 wakeup interrupt controller has two-interrupt parents,
+	 * gic and combiner. Hence, a interrupt nexus node is used to translate
+	 * interrupt specifers for the interrupts which wakeup interrupt
+	 * controller deliver to the gic and combiner.
+	 *
+	 * When using a interrupt nexus node (which is child node of the wakeup
+	 * controller node), the interrupt parent of the wakeup controller node
+	 * is set as the nexus node and the nexus node does not have a
+	 * 'interrupt-controller' property. Hence, the of_irq_init function
+	 * will not be able to invoke the intializer function for wakeup
+	 * interrupt controller. So call the initiazer explicitly here.
+	 */
+	np = of_find_compatible_node(NULL, NULL,
+					"samsung,exynos5210-wakeup-eint");
+	if (np)
+		exynos_init_irq_eint(np, NULL);
+
+	/*
 	 * The parameters of s5p_init_irq() are for VIC init.
 	 * Theses parameters should be NULL and 0 because EXYNOS4
 	 * uses GIC instead of VIC.
@@ -766,6 +793,9 @@ static DEFINE_SPINLOCK(eint_lock);
 
 static unsigned int eint0_15_data[16];
 
+#define EXYNOS_EINT_NR 32
+static struct irq_domain *irq_domain;
+
 static inline int exynos4_irq_to_gpio(unsigned int irq)
 {
 	if (irq < IRQ_EINT(0))
@@ -856,9 +886,9 @@ static inline void exynos_irq_eint_mask(struct irq_data *data)
 	u32 mask;
 
 	spin_lock(&eint_lock);
-	mask = __raw_readl(EINT_MASK(exynos_eint_base, data->irq));
-	mask |= EINT_OFFSET_BIT(data->irq);
-	__raw_writel(mask, EINT_MASK(exynos_eint_base, data->irq));
+	mask = __raw_readl(EINT_MASK(exynos_eint_base, data->hwirq));
+	mask |= EINT_OFFSET_BIT(data->hwirq);
+	__raw_writel(mask, EINT_MASK(exynos_eint_base, data->hwirq));
 	spin_unlock(&eint_lock);
 }
 
@@ -867,16 +897,16 @@ static void exynos_irq_eint_unmask(struct irq_data *data)
 	u32 mask;
 
 	spin_lock(&eint_lock);
-	mask = __raw_readl(EINT_MASK(exynos_eint_base, data->irq));
-	mask &= ~(EINT_OFFSET_BIT(data->irq));
-	__raw_writel(mask, EINT_MASK(exynos_eint_base, data->irq));
+	mask = __raw_readl(EINT_MASK(exynos_eint_base, data->hwirq));
+	mask &= ~(EINT_OFFSET_BIT(data->hwirq));
+	__raw_writel(mask, EINT_MASK(exynos_eint_base, data->hwirq));
 	spin_unlock(&eint_lock);
 }
 
 static inline void exynos_irq_eint_ack(struct irq_data *data)
 {
-	__raw_writel(EINT_OFFSET_BIT(data->irq),
-		     EINT_PEND(exynos_eint_base, data->irq));
+	__raw_writel(EINT_OFFSET_BIT(data->hwirq),
+		     EINT_PEND(exynos_eint_base, data->hwirq));
 }
 
 static void exynos_irq_eint_maskack(struct irq_data *data)
@@ -887,7 +917,7 @@ static void exynos_irq_eint_maskack(struct irq_data *data)
 
 static int exynos_irq_eint_set_type(struct irq_data *data, unsigned int type)
 {
-	int offs = EINT_OFFSET(data->irq);
+	int offs = data->hwirq;
 	int shift;
 	u32 ctrl, mask;
 	u32 newvalue = 0;
@@ -922,10 +952,10 @@ static int exynos_irq_eint_set_type(struct irq_data *data, unsigned int type)
 	mask = 0x7 << shift;
 
 	spin_lock(&eint_lock);
-	ctrl = __raw_readl(EINT_CON(exynos_eint_base, data->irq));
+	ctrl = __raw_readl(EINT_CON(exynos_eint_base, data->hwirq));
 	ctrl &= ~mask;
 	ctrl |= newvalue << shift;
-	__raw_writel(ctrl, EINT_CON(exynos_eint_base, data->irq));
+	__raw_writel(ctrl, EINT_CON(exynos_eint_base, data->hwirq));
 	spin_unlock(&eint_lock);
 
 	if (soc_is_exynos5250())
@@ -969,7 +999,7 @@ static inline void exynos_irq_demux_eint(unsigned int start)
 
 	while (status) {
 		irq = fls(status) - 1;
-		generic_handle_irq(irq + start);
+		generic_handle_irq(irq_find_mapping(irq_domain, irq + start));
 		status &= ~(1 << irq);
 	}
 }
@@ -978,8 +1008,8 @@ static void exynos_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
 {
 	struct irq_chip *chip = irq_get_chip(irq);
 	chained_irq_enter(chip, desc);
-	exynos_irq_demux_eint(IRQ_EINT(16));
-	exynos_irq_demux_eint(IRQ_EINT(24));
+	exynos_irq_demux_eint(16);
+	exynos_irq_demux_eint(24);
 	chained_irq_exit(chip, desc);
 }
 
@@ -987,6 +1017,7 @@ static void exynos_irq_eint0_15(unsigned int irq, struct irq_desc *desc)
 {
 	u32 *irq_data = irq_get_handler_data(irq);
 	struct irq_chip *chip = irq_get_chip(irq);
+	int eint_irq;
 
 	chained_irq_enter(chip, desc);
 	chip->irq_mask(&desc->irq_data);
@@ -994,50 +1025,68 @@ static void exynos_irq_eint0_15(unsigned int irq, struct irq_desc *desc)
 	if (chip->irq_ack)
 		chip->irq_ack(&desc->irq_data);
 
-	generic_handle_irq(*irq_data);
+	eint_irq = irq_find_mapping(irq_domain, *irq_data);
+	generic_handle_irq(eint_irq);
 
 	chip->irq_unmask(&desc->irq_data);
 	chained_irq_exit(chip, desc);
 }
 
-static int __init exynos_init_irq_eint(void)
+static int exynos_eint_irq_domain_map(struct irq_domain *d, unsigned int irq,
+					irq_hw_number_t hw)
 {
-	int irq;
+	irq_set_chip_and_handler(irq, &exynos_irq_eint, handle_level_irq);
+	set_irq_flags(irq, IRQF_VALID);
+	return 0;
+}
 
-	if (soc_is_exynos5250())
-		exynos_eint_base = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);
-	else
-		exynos_eint_base = ioremap(EXYNOS4_PA_GPIO2, SZ_4K);
+static struct irq_domain_ops exynos_eint_irq_domain_ops = {
+	.map = exynos_eint_irq_domain_map,
+};
+
+static int __init exynos_init_irq_eint(struct device_node *np,
+					struct device_node *parent)
+{
+	int irq, *src_int, irq_base, irq_eint;
+	unsigned int paddr;
 
-	if (exynos_eint_base == NULL) {
+	if (!np) {
+		paddr = soc_is_exynos5250() ? EXYNOS5_PA_GPIO1 :
+						EXYNOS4_PA_GPIO2;
+		exynos_eint_base = ioremap(paddr, SZ_4K);
+	} else {
+		exynos_eint_base = of_iomap(np, 0);
+	}
+	if (!exynos_eint_base) {
 		pr_err("unable to ioremap for EINT base address\n");
-		return -ENOMEM;
+		return -ENXIO;
 	}
 
-	for (irq = 0 ; irq <= 31 ; irq++) {
-		irq_set_chip_and_handler(IRQ_EINT(irq), &exynos_irq_eint,
-					 handle_level_irq);
-		set_irq_flags(IRQ_EINT(irq), IRQF_VALID);
+	irq_base = irq_alloc_descs(IRQ_EINT(0), 1, EXYNOS_EINT_NR, 0);
+	if (IS_ERR_VALUE(irq_base)) {
+		irq_base = IRQ_EINT(0);
+		pr_warning("%s: irq desc alloc failed. Continuing with %d as "
+				"linux irq base\n", __func__, irq_base);
 	}
 
-	irq_set_chained_handler(EXYNOS_IRQ_EINT16_31, exynos_irq_demux_eint16_31);
-
-	for (irq = 0 ; irq <= 15 ; irq++) {
-		eint0_15_data[irq] = IRQ_EINT(irq);
-
-		if (soc_is_exynos5250()) {
-			irq_set_handler_data(exynos5_eint0_15_src_int[irq],
-					     &eint0_15_data[irq]);
-			irq_set_chained_handler(exynos5_eint0_15_src_int[irq],
-						exynos_irq_eint0_15);
-		} else {
-			irq_set_handler_data(exynos4_eint0_15_src_int[irq],
-					     &eint0_15_data[irq]);
-			irq_set_chained_handler(exynos4_eint0_15_src_int[irq],
-						exynos_irq_eint0_15);
-		}
+	irq_domain = irq_domain_add_legacy(np, EXYNOS_EINT_NR, irq_base, 0,
+					 &exynos_eint_irq_domain_ops, NULL);
+	if (WARN_ON(!irq_domain)) {
+		pr_warning("%s: irq domain init failed\n", __func__);
+		return 0;
+	}
+
+	irq_eint = np ? irq_of_parse_and_map(np, 16) : EXYNOS_IRQ_EINT16_31;
+	irq_set_chained_handler(irq_eint, exynos_irq_demux_eint16_31);
+
+	for (irq = 0 ; irq <= 15; irq++) {
+		eint0_15_data[irq] = irq;
+		src_int = soc_is_exynos5250() ? exynos5_eint0_15_src_int :
+						exynos4_eint0_15_src_int;
+		irq_eint = np ? irq_of_parse_and_map(np, irq) : src_int[irq];
+		irq_set_handler_data(irq_eint, &eint0_15_data[irq]);
+		irq_set_chained_handler(irq_eint, exynos_irq_eint0_15);
 	}
 
 	return 0;
 }
-arch_initcall(exynos_init_irq_eint);
diff --git a/arch/arm/mach-exynos/include/mach-exynos/regs-gpio.h b/arch/arm/mach-exynos/include/mach-exynos/regs-gpio.h
index 077ebfd55f6f..31178953df19 100644
--- a/arch/arm/mach-exynos/include/mach-exynos/regs-gpio.h
+++ b/arch/arm/mach-exynos/include/mach-exynos/regs-gpio.h
@@ -16,13 +16,13 @@
 #include <mach-exynos/map.h>
 #include <mach-exynos/irqs.h>
 
-#define EINT_REG_NR(x)			(EINT_OFFSET(x) >> 3)
+#define EINT_REG_NR(x)			((x) >> 3)
 #define EINT_CON(b, x)			(b + 0xE00 + (EINT_REG_NR(x) * 4))
 #define EINT_FLTCON(b, x)		(b + 0xE80 + (EINT_REG_NR(x) * 4))
 #define EINT_MASK(b, x)			(b + 0xF00 + (EINT_REG_NR(x) * 4))
 #define EINT_PEND(b, x)			(b + 0xF40 + (EINT_REG_NR(x) * 4))
 
-#define EINT_OFFSET_BIT(x)		(1 << (EINT_OFFSET(x) & 0x7))
+#define EINT_OFFSET_BIT(x)		(1 << ((x) & 0x7))
 
 /* compatibility for plat-s5p/irq-pm.c */
 #define EXYNOS4_EINT40CON		(S5P_VA_GPIO2 + 0xE00)
diff --git a/arch/arm/mach-exynos/mach-exynos4-dt.c b/arch/arm/mach-exynos/mach-exynos4-dt.c
index 03efe1be3cad..c0ace48f70ad 100644
--- a/arch/arm/mach-exynos/mach-exynos4-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos4-dt.c
@@ -14,6 +14,16 @@
 #include <linux/of_platform.h>
 #include <linux/serial_core.h>
 
+#include <linux/pwm_backlight.h>
+#include <plat/backlight.h>
+#include <plat/gpio-cfg.h>
+#include <linux/gpio.h>
+#include <plat/regs-fb-v4.h>
+#include <linux/fb.h>
+#include <plat/fb.h>
+#include <linux/lcd.h>
+#include <plat/devs.h>
+
 #include <asm/mach/arch.h>
 #include <asm/hardware/gic.h>
 #include <mach-exynos/map.h>
@@ -23,6 +33,17 @@
 
 #include "common.h"
 
+/* LCD Backlight data */
+static struct samsung_bl_gpio_info origen_bl_gpio_info = {
+	.no	= EXYNOS4_GPD0(0),
+	.func	= S3C_GPIO_SFN(2),
+};
+
+static struct platform_pwm_backlight_data origen_bl_data = {
+	.pwm_id		= 0,
+	.pwm_period_ns	= 1000,
+};
+
 /*
  * The following lookup table is used to override device names when devices
  * are registered from device tree. This is temporarily added to enable
@@ -57,6 +78,8 @@ static const struct of_dev_auxdata exynos4210_auxdata_lookup[] __initconst = {
 				"s3c2440-i2c.0", NULL),
 	OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA0, "dma-pl330.0", NULL),
 	OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA1, "dma-pl330.1", NULL),
+	OF_DEV_AUXDATA("samsung,exynos4210-fimd", EXYNOS4_PA_FIMD0,
+			"exynos4-fb.0", NULL),
 	{},
 };
 
@@ -66,10 +89,21 @@ static void __init exynos4210_dt_map_io(void)
 	s3c24xx_init_clocks(24000000);
 }
 
+static void __init exynos4_setup_fimd(void)
+{
+	unsigned int reg;
+
+	reg = __raw_readl(S3C_VA_SYS + 0x0210);
+	reg |= (1 << 1);
+	__raw_writel(reg, S3C_VA_SYS + 0x0210);
+}
+
 static void __init exynos4210_dt_machine_init(void)
 {
 	of_platform_populate(NULL, of_default_bus_match_table,
 				exynos4210_auxdata_lookup, NULL);
+	samsung_bl_set(&origen_bl_gpio_info, &origen_bl_data);
+	exynos4_setup_fimd();
 }
 
 static char const *exynos4210_dt_compat[] __initdata = {
diff --git a/arch/arm/mach-exynos/mach-nuri.c b/arch/arm/mach-exynos/mach-nuri.c
index 9bef191bfc5e..74e16f51b5a0 100644
--- a/arch/arm/mach-exynos/mach-nuri.c
+++ b/arch/arm/mach-exynos/mach-nuri.c
@@ -1067,12 +1067,8 @@ static struct platform_device nuri_max8903_device = {
 static void __init nuri_power_init(void)
 {
 	int gpio;
-	int irq_base = IRQ_GPIO_END + 1;
 	int ta_en = 0;
 
-	nuri_max8997_pdata.irq_base = irq_base;
-	irq_base += MAX8997_IRQ_NR;
-
 	gpio = EXYNOS4_GPX0(7);
 	gpio_request(gpio, "AP_PMIC_IRQ");
 	s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(0xf));
diff --git a/arch/arm/mach-exynos/mach-origen.c b/arch/arm/mach-exynos/mach-origen.c
index 06e2b7782e86..55fbf2a4f435 100644
--- a/arch/arm/mach-exynos/mach-origen.c
+++ b/arch/arm/mach-exynos/mach-origen.c
@@ -425,7 +425,6 @@ static struct max8997_platform_data __initdata origen_max8997_pdata = {
 	.buck1_gpiodvs	= false,
 	.buck2_gpiodvs	= false,
 	.buck5_gpiodvs	= false,
-	.irq_base	= IRQ_GPIO_END + 1,
 
 	.ignore_gpiodvs_side_effect = true,
 	.buck125_default_idx = 0x0,
diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c
index f08197f7cde0..c90ff16896b6 100644
--- a/arch/arm/mach-exynos/pm_domains.c
+++ b/arch/arm/mach-exynos/pm_domains.c
@@ -200,6 +200,7 @@ arch_initcall(exynos4_pm_init_power_domain);
 
 int __init exynos_pm_late_initcall(void)
 {
-	pm_genpd_poweroff_unused();
+	if (!of_have_populated_dt())
+		pm_genpd_poweroff_unused();
 	return 0;
 }
diff --git a/drivers/mfd/max8997-irq.c b/drivers/mfd/max8997-irq.c
index 09274cf7c33b..00390a117ae6 100644
--- a/drivers/mfd/max8997-irq.c
+++ b/drivers/mfd/max8997-irq.c
@@ -142,7 +142,8 @@ static void max8997_irq_sync_unlock(struct irq_data *data)
 static const inline struct max8997_irq_data *
 irq_to_max8997_irq(struct max8997_dev *max8997, int irq)
 {
-	return &max8997_irqs[irq - max8997->irq_base];
+	struct irq_data *data = irq_get_irq_data(irq);
+	return &max8997_irqs[data->hwirq];
 }
 
 static void max8997_irq_mask(struct irq_data *data)
@@ -182,7 +183,7 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
 	u8 irq_reg[MAX8997_IRQ_GROUP_NR] = {};
 	u8 irq_src;
 	int ret;
-	int i;
+	int i, cur_irq;
 
 	ret = max8997_read_reg(max8997->i2c, MAX8997_REG_INTSRC, &irq_src);
 	if (ret < 0) {
@@ -269,8 +270,11 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
 
 	/* Report */
 	for (i = 0; i < MAX8997_IRQ_NR; i++) {
-		if (irq_reg[max8997_irqs[i].group] & max8997_irqs[i].mask)
-			handle_nested_irq(max8997->irq_base + i);
+		if (irq_reg[max8997_irqs[i].group] & max8997_irqs[i].mask) {
+			cur_irq = irq_find_mapping(max8997->irq_domain, i);
+			if (cur_irq)
+				handle_nested_irq(cur_irq);
+		}
 	}
 
 	return IRQ_HANDLED;
@@ -278,26 +282,40 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
 
 int max8997_irq_resume(struct max8997_dev *max8997)
 {
-	if (max8997->irq && max8997->irq_base)
-		max8997_irq_thread(max8997->irq_base, max8997);
+	if (max8997->irq && max8997->irq_domain)
+		max8997_irq_thread(0, max8997);
+	return 0;
+}
+
+static int max8997_irq_domain_map(struct irq_domain *d, unsigned int irq,
+					irq_hw_number_t hw)
+{
+	struct max8997_dev *max8997 = d->host_data;
+
+	irq_set_chip_data(irq, max8997);
+	irq_set_chip_and_handler(irq, &max8997_irq_chip, handle_edge_irq);
+	irq_set_nested_thread(irq, 1);
+#ifdef CONFIG_ARM
+	set_irq_flags(irq, IRQF_VALID);
+#else
+	irq_set_noprobe(irq);
+#endif
 	return 0;
 }
 
+static struct irq_domain_ops max8997_irq_domain_ops = {
+	.map = max8997_irq_domain_map,
+};
+
 int max8997_irq_init(struct max8997_dev *max8997)
 {
+	struct irq_domain *domain;
 	int i;
-	int cur_irq;
 	int ret;
 	u8 val;
 
 	if (!max8997->irq) {
 		dev_warn(max8997->dev, "No interrupt specified.\n");
-		max8997->irq_base = 0;
-		return 0;
-	}
-
-	if (!max8997->irq_base) {
-		dev_err(max8997->dev, "No interrupt base specified.\n");
 		return 0;
 	}
 
@@ -327,18 +345,11 @@ int max8997_irq_init(struct max8997_dev *max8997)
 					true : false;
 	}
 
-	/* Register with genirq */
-	for (i = 0; i < MAX8997_IRQ_NR; i++) {
-		cur_irq = i + max8997->irq_base;
-		irq_set_chip_data(cur_irq, max8997);
-		irq_set_chip_and_handler(cur_irq, &max8997_irq_chip,
-				handle_edge_irq);
-		irq_set_nested_thread(cur_irq, 1);
-#ifdef CONFIG_ARM
-		set_irq_flags(cur_irq, IRQF_VALID);
-#else
-		irq_set_noprobe(cur_irq);
-#endif
+	domain = irq_domain_add_linear(NULL, MAX8997_IRQ_NR,
+					&max8997_irq_domain_ops, &max8997);
+	if (!domain) {
+		dev_err(max8997->dev, "could not create irq domain\n");
+		return -ENODEV;
 	}
 
 	ret = request_threaded_irq(max8997->irq, NULL, max8997_irq_thread,
diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
index cb83a7ab53e7..1c38e98d4d2e 100644
--- a/drivers/mfd/max8997.c
+++ b/drivers/mfd/max8997.c
@@ -21,8 +21,10 @@
  * This driver is based on max8998.c
  */
 
+#include <linux/err.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
+#include <linux/of_irq.h>
 #include <linux/interrupt.h>
 #include <linux/pm_runtime.h>
 #include <linux/module.h>
@@ -47,6 +49,13 @@ static struct mfd_cell max8997_devs[] = {
 	{ .name = "max8997-led", .id = 2 },
 };
 
+#ifdef CONFIG_OF
+static struct of_device_id __devinitdata max8997_pmic_dt_match[] = {
+	{ .compatible = "maxim,max8997-pmic", .data = TYPE_MAX8997 },
+	{},
+};
+#endif
+
 int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
 {
 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
@@ -123,6 +132,58 @@ int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
 }
 EXPORT_SYMBOL_GPL(max8997_update_reg);
 
+#ifdef CONFIG_OF
+/*
+ * Only the common platform data elements for max8997 are parsed here from the
+ * device tree. Other sub-modules of max8997 such as pmic, rtc and others have
+ * to parse their own platform data elements from device tree.
+ *
+ * The max8997 platform data structure is instantiated here and the drivers for
+ * the sub-modules need not instantiate another instance while parsing their
+ * platform data.
+ */
+static struct max8997_platform_data *max8997_i2c_parse_dt_pdata(
+					struct device *dev)
+{
+	struct max8997_platform_data *pd;
+
+	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
+	if (!pd) {
+		dev_err(dev, "could not allocate memory for pdata\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	pd->ono = irq_of_parse_and_map(dev->of_node, 1);
+
+	/*
+	 * ToDo: the 'wakeup' member in the platform data is more of a linux
+	 * specfic information. Hence, there is no binding for that yet and
+	 * not parsed here.
+	 */
+
+	return pd;
+}
+#else
+static int max8997_i2c_parse_dt_pdata(struct device *dev,
+					struct max8997_platform_data **pdata)
+{
+	return 0;
+}
+#endif
+
+static inline int max8997_i2c_get_driver_data(struct i2c_client *i2c,
+						const struct i2c_device_id *id)
+{
+#ifdef CONFIG_OF
+	if (i2c->dev.of_node) {
+		const struct of_device_id *match;
+		match = of_match_node(max8997_pmic_dt_match, i2c->dev.of_node);
+		return (int)match->data;
+	}
+#endif
+	return (int)id->driver_data;
+}
+
 static int max8997_i2c_probe(struct i2c_client *i2c,
 			    const struct i2c_device_id *id)
 {
@@ -137,13 +198,21 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
 	i2c_set_clientdata(i2c, max8997);
 	max8997->dev = &i2c->dev;
 	max8997->i2c = i2c;
-	max8997->type = id->driver_data;
+	max8997->type = max8997_i2c_get_driver_data(i2c, id);
 	max8997->irq = i2c->irq;
 
+	if (max8997->dev->of_node) {
+		pdata = max8997_i2c_parse_dt_pdata(max8997->dev);
+		if (IS_ERR(pdata)) {
+			ret = PTR_ERR(pdata);
+			goto err;
+		}
+	}
+
 	if (!pdata)
 		goto err;
 
-	max8997->irq_base = pdata->irq_base;
+	max8997->pdata = pdata;
 	max8997->ono = pdata->ono;
 
 	mutex_init(&max8997->iolock);
@@ -435,6 +504,7 @@ static struct i2c_driver max8997_i2c_driver = {
 		   .name = "max8997",
 		   .owner = THIS_MODULE,
 		   .pm = &max8997_pm,
+		   .of_match_table = of_match_ptr(max8997_pmic_dt_match),
 	},
 	.probe = max8997_i2c_probe,
 	.remove = max8997_i2c_remove,
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index ef44fae5f3ee..cf3e8ec8a3f0 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -33,6 +33,8 @@
 #include "sdhci.h"
 
 #define MAX_BUS_CLK	(4)
+/* Number of gpio's used is max data bus width + command and clock lines */
+#define NUM_GPIOS(x)	(x + 2)
 
 /**
  * struct sdhci_s3c - S3C SDHCI instance
@@ -41,6 +43,7 @@
  * @ioarea: The resource created when we claimed the IO area.
  * @pdata: The platform data for this controller.
  * @cur_clk: The index of the current bus clock.
+ * @gpios: List of gpio numbers parsed from device tree.
  * @clk_io: The clock for the internal bus interface.
  * @clk_bus: The clocks that are available for the SD/MMC bus clock.
  */
@@ -52,6 +55,7 @@ struct sdhci_s3c {
 	unsigned int		cur_clk;
 	int			ext_cd_irq;
 	int			ext_cd_gpio;
+	int			*gpios;
 
 	struct clk		*clk_io;
 	struct clk		*clk_bus[MAX_BUS_CLK];
@@ -419,9 +423,110 @@ static void sdhci_s3c_setup_card_detect_gpio(struct sdhci_s3c *sc)
 	}
 }
 
+#ifdef CONFIG_OF
+static int __devinit sdhci_s3c_parse_dt(struct device *dev,
+		struct sdhci_host *host, struct s3c_sdhci_platdata *pdata)
+{
+	struct device_node *node = dev->of_node;
+	struct sdhci_s3c *ourhost = to_s3c(host);
+	u32 max_width;
+	int gpio, cnt, ret;
+
+	/* if the bus-width property is not specified, assume width as 1 */
+	if (of_property_read_u32(node, "samsung,sdhci-bus-width",
+				&max_width))
+		max_width = 1;
+	pdata->max_width = max_width;
+
+	ourhost->gpios = devm_kzalloc(dev, NUM_GPIOS(pdata->max_width) *
+				sizeof(int), GFP_KERNEL);
+	if (!ourhost->gpios)
+		return -ENOMEM;
+
+	/* get the card detection method */
+	if (of_get_property(node, "samsung,sdhci-cd-internal", NULL))
+		pdata->cd_type = S3C_SDHCI_CD_INTERNAL;
+	else if (of_get_property(node, "samsung,sdhci-cd-gpio", NULL))
+		pdata->cd_type = S3C_SDHCI_CD_GPIO;
+	else if (of_get_property(node, "samsung,sdhci-cd-none", NULL))
+		pdata->cd_type = S3C_SDHCI_CD_NONE;
+	else if (of_get_property(node, "samsung,sdhci-cd-permanent", NULL))
+		pdata->cd_type = S3C_SDHCI_CD_PERMANENT;
+	else
+		pdata->cd_type = S3C_SDHCI_CD_NONE;
+
+	/* get the gpio used for card detection */
+	if (pdata->cd_type == S3C_SDHCI_CD_GPIO ||
+			pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
+		gpio = of_get_named_gpio(node, "gpio-cd", 0);
+		if (!gpio_is_valid(gpio)) {
+			dev_err(dev, "invalid card detect gpio specified\n");
+			return -EINVAL;
+		}
+	}
+
+	if (pdata->cd_type == S3C_SDHCI_CD_GPIO) {
+		pdata->ext_cd_gpio = gpio;
+		ourhost->ext_cd_gpio = -1; /* invalid gpio number */
+		if (of_get_property(node, "samsung,cd-gpio-invert", NULL))
+			pdata->ext_cd_gpio_invert = 1;
+	} else if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
+		ret = gpio_request(gpio, "sdhci-cd");
+		if (ret) {
+			dev_err(dev, "card detect gpio request failed\n");
+			return -EINVAL;
+		}
+		ourhost->ext_cd_gpio = gpio;
+	}
+
+	/* get the gpios for command, clock and data lines */
+	for (cnt = 0; cnt < NUM_GPIOS(pdata->max_width); cnt++) {
+		gpio = of_get_gpio(node, cnt);
+		if (!gpio_is_valid(gpio)) {
+			dev_err(dev, "invalid gpio[%d]\n", cnt);
+			goto err_free_dt_cd_gpio;
+		}
+		ourhost->gpios[cnt] = gpio;
+	}
+
+	for (cnt = 0; cnt < NUM_GPIOS(pdata->max_width); cnt++) {
+		ret = gpio_request(ourhost->gpios[cnt], "sdhci-gpio");
+		if (ret) {
+			dev_err(dev, "gpio[%d] request failed\n", cnt);
+			goto err_free_dt_gpios;
+		}
+	}
+
+	return 0;
+
+ err_free_dt_gpios:
+	while (--cnt >= 0)
+		gpio_free(ourhost->gpios[cnt]);
+ err_free_dt_cd_gpio:
+	if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL)
+		gpio_free(ourhost->ext_cd_gpio);
+	return -EINVAL;
+}
+#else
+static int __devinit sdhci_s3c_parse_dt(struct device *dev,
+		struct sdhci_host *host, struct s3c_sdhci_platdata *pdata)
+{
+	return -EINVAL;
+}
+#endif
+
+static const struct of_device_id sdhci_s3c_dt_match[];
+
 static inline struct sdhci_s3c_drv_data *sdhci_s3c_get_driver_data(
 			struct platform_device *pdev)
 {
+#ifdef CONFIG_OF
+	if (pdev->dev.of_node) {
+		const struct of_device_id *match;
+		match = of_match_node(sdhci_s3c_dt_match, pdev->dev.of_node);
+		return (struct sdhci_s3c_drv_data *)match->data;
+	}
+#endif
 	return (struct sdhci_s3c_drv_data *)
 			platform_get_device_id(pdev)->driver_data;
 }
@@ -436,7 +541,7 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 	struct resource *res;
 	int ret, irq, ptr, clks;
 
-	if (!pdev->dev.platform_data) {
+	if (!pdev->dev.platform_data && !pdev->dev.of_node) {
 		dev_err(dev, "no device data specified\n");
 		return -ENOENT;
 	}
@@ -452,21 +557,28 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 		dev_err(dev, "sdhci_alloc_host() failed\n");
 		return PTR_ERR(host);
 	}
+	sc = sdhci_priv(host);
 
 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata) {
 		ret = -ENOMEM;
-		goto err_io_clk;
+		goto err_pdata;
+	}
+
+	if (pdev->dev.of_node) {
+		ret = sdhci_s3c_parse_dt(&pdev->dev, host, pdata);
+		if (ret)
+			goto err_pdata;
+	} else {
+		memcpy(pdata, pdev->dev.platform_data, sizeof(*pdata));
+		sc->ext_cd_gpio = -1; /* invalid gpio number */
 	}
-	memcpy(pdata, pdev->dev.platform_data, sizeof(*pdata));
 
 	drv_data = sdhci_s3c_get_driver_data(pdev);
-	sc = sdhci_priv(host);
 
 	sc->host = host;
 	sc->pdev = pdev;
 	sc->pdata = pdata;
-	sc->ext_cd_gpio = -1; /* invalid gpio number */
 
 	platform_set_drvdata(pdev, host);
 
@@ -631,6 +743,12 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 	clk_put(sc->clk_io);
 
  err_io_clk:
+	for (ptr = 0; ptr < NUM_GPIOS(sc->pdata->max_width); ptr++)
+		gpio_free(sc->gpios[ptr]);
+	if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL)
+		gpio_free(sc->ext_cd_gpio);
+
+ err_pdata:
 	sdhci_free_host(host);
 
 	return ret;
@@ -638,9 +756,9 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 
 static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
 {
-	struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data;
 	struct sdhci_host *host =  platform_get_drvdata(pdev);
 	struct sdhci_s3c *sc = sdhci_priv(host);
+	struct s3c_sdhci_platdata *pdata = sc->pdata;
 	int ptr;
 
 	if (pdata->cd_type == S3C_SDHCI_CD_EXTERNAL && pdata->ext_cd_cleanup)
@@ -665,6 +783,15 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
 	clk_disable(sc->clk_io);
 	clk_put(sc->clk_io);
 
+	iounmap(host->ioaddr);
+	release_resource(sc->ioarea);
+	kfree(sc->ioarea);
+
+	if (pdev->dev.of_node) {
+		for (ptr = 0; ptr < NUM_GPIOS(sc->pdata->max_width); ptr++)
+			gpio_free(sc->gpios[ptr]);
+	}
+
 	sdhci_free_host(host);
 	platform_set_drvdata(pdev, NULL);
 
@@ -737,6 +864,16 @@ static struct platform_device_id sdhci_s3c_driver_ids[] = {
 };
 MODULE_DEVICE_TABLE(platform, sdhci_s3c_driver_ids);
 
+#ifdef CONFIG_OF
+static const struct of_device_id sdhci_s3c_dt_match[] = {
+	{ .compatible = "samsung,s3c6410-sdhci", },
+	{ .compatible = "samsung,exynos4210-sdhci",
+		.data = &exynos4_sdhci_drv_data },
+	{},
+};
+MODULE_DEVICE_TABLE(of, sdhci_s3c_dt_match);
+#endif
+
 static struct platform_driver sdhci_s3c_driver = {
 	.probe		= sdhci_s3c_probe,
 	.remove		= __devexit_p(sdhci_s3c_remove),
@@ -744,6 +881,7 @@ static struct platform_driver sdhci_s3c_driver = {
 	.driver		= {
 		.owner	= THIS_MODULE,
 		.name	= "s3c-sdhci",
+		.of_match_table = of_match_ptr(sdhci_s3c_dt_match),
 		.pm	= SDHCI_S3C_PMOPS,
 	},
 };
diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c
index 704cd49ef375..9f6ee821da15 100644
--- a/drivers/regulator/max8997.c
+++ b/drivers/regulator/max8997.c
@@ -24,6 +24,7 @@
 #include <linux/bug.h>
 #include <linux/err.h>
 #include <linux/gpio.h>
+#include <linux/of_gpio.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -31,6 +32,7 @@
 #include <linux/regulator/machine.h>
 #include <linux/mfd/max8997.h>
 #include <linux/mfd/max8997-private.h>
+#include <linux/regulator/of_regulator.h>
 
 struct max8997_data {
 	struct device *dev;
@@ -933,10 +935,138 @@ static struct regulator_desc regulators[] = {
 				  max8997_charger_fixedstate_ops),
 };
 
+#ifdef CONFIG_OF
+static int max8997_pmic_dt_parse_dvs_gpio(struct max8997_dev *iodev,
+			struct max8997_platform_data *pdata,
+			struct device_node *pmic_np)
+{
+	int i, gpio;
+
+	for (i = 0; i < 3; i++) {
+		gpio = of_get_named_gpio(pmic_np,
+					"max8997,pmic-buck125-dvs-gpios", i);
+		if (!gpio_is_valid(gpio)) {
+			dev_err(iodev->dev, "invalid gpio[%d]: %d\n", i, gpio);
+			return -EINVAL;
+		}
+		pdata->buck125_gpios[i] = gpio;
+	}
+	return 0;
+}
+
+static int max8997_pmic_dt_parse_pdata(struct max8997_dev *iodev,
+					struct max8997_platform_data *pdata)
+{
+	struct device_node *pmic_np, *regulators_np, *reg_np;
+	struct max8997_regulator_data *rdata;
+	unsigned int i, dvs_voltage_nr = 1, ret;
+
+	pmic_np = iodev->dev->of_node;
+	if (!pmic_np) {
+		dev_err(iodev->dev, "could not find pmic sub-node\n");
+		return -ENODEV;
+	}
+
+	regulators_np = of_find_node_by_name(pmic_np, "regulators");
+	if (!regulators_np) {
+		dev_err(iodev->dev, "could not find regulators sub-node\n");
+		return -EINVAL;
+	}
+
+	/* count the number of regulators to be supported in pmic */
+	pdata->num_regulators = 0;
+	for_each_child_of_node(regulators_np, reg_np)
+		pdata->num_regulators++;
+
+	rdata = devm_kzalloc(iodev->dev, sizeof(*rdata) *
+				pdata->num_regulators, GFP_KERNEL);
+	if (!rdata) {
+		dev_err(iodev->dev, "could not allocate memory for "
+						"regulator data\n");
+		return -ENOMEM;
+	}
+
+	pdata->regulators = rdata;
+	for_each_child_of_node(regulators_np, reg_np) {
+		for (i = 0; i < ARRAY_SIZE(regulators); i++)
+			if (!of_node_cmp(reg_np->name, regulators[i].name))
+				break;
+		rdata->id = i;
+		rdata->initdata = of_get_regulator_init_data(
+						iodev->dev, reg_np);
+		rdata->reg_node = reg_np;
+		rdata++;
+	}
+
+	if (of_get_property(pmic_np, "max8997,pmic-buck1-uses-gpio-dvs", NULL))
+		pdata->buck1_gpiodvs = true;
+
+	if (of_get_property(pmic_np, "max8997,pmic-buck2-uses-gpio-dvs", NULL))
+		pdata->buck2_gpiodvs = true;
+
+	if (of_get_property(pmic_np, "max8997,pmic-buck5-uses-gpio-dvs", NULL))
+		pdata->buck5_gpiodvs = true;
+
+	if (pdata->buck1_gpiodvs || pdata->buck2_gpiodvs ||
+						pdata->buck5_gpiodvs) {
+		ret = max8997_pmic_dt_parse_dvs_gpio(iodev, pdata, pmic_np);
+		if (ret)
+			return -EINVAL;
+
+		if (of_property_read_u32(pmic_np,
+				"max8997,pmic-buck125-default-dvs-idx",
+				&pdata->buck125_default_idx)) {
+			pdata->buck125_default_idx = 0;
+		} else {
+			if (pdata->buck125_default_idx >= 8) {
+				pdata->buck125_default_idx = 0;
+				dev_info(iodev->dev, "invalid value for "
+				"default dvs index, using 0 instead\n");
+			}
+		}
+
+		if (of_get_property(pmic_np,
+			"max8997,pmic-ignore-gpiodvs-side-effect", NULL))
+			pdata->ignore_gpiodvs_side_effect = true;
+
+		dvs_voltage_nr = 8;
+	}
+
+	if (of_property_read_u32_array(pmic_np,
+				"max8997,pmic-buck1-dvs-voltage",
+				pdata->buck1_voltage, dvs_voltage_nr)) {
+		dev_err(iodev->dev, "buck1 voltages not specified\n");
+		return -EINVAL;
+	}
+
+	if (of_property_read_u32_array(pmic_np,
+				"max8997,pmic-buck2-dvs-voltage",
+				pdata->buck2_voltage, dvs_voltage_nr)) {
+		dev_err(iodev->dev, "buck2 voltages not specified\n");
+		return -EINVAL;
+	}
+
+	if (of_property_read_u32_array(pmic_np,
+				"max8997,pmic-buck5-dvs-voltage",
+				pdata->buck5_voltage, dvs_voltage_nr)) {
+		dev_err(iodev->dev, "buck5 voltages not specified\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+#else
+static int max8997_pmic_dt_parse_pdata(struct max8997_dev *iodev,
+					struct max8997_platform_data *pdata)
+{
+	return 0;
+}
+#endif /* CONFIG_OF */
+
 static __devinit int max8997_pmic_probe(struct platform_device *pdev)
 {
 	struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent);
-	struct max8997_platform_data *pdata = dev_get_platdata(iodev->dev);
+	struct max8997_platform_data *pdata = iodev->pdata;
 	struct regulator_config config = { };
 	struct regulator_dev **rdev;
 	struct max8997_data *max8997;
@@ -944,11 +1074,17 @@ static __devinit int max8997_pmic_probe(struct platform_device *pdev)
 	int i, ret, size;
 	u8 max_buck1 = 0, max_buck2 = 0, max_buck5 = 0;
 
-	if (!pdata) {
+	if (IS_ERR_OR_NULL(pdata)) {
 		dev_err(pdev->dev.parent, "No platform init data supplied.\n");
 		return -ENODEV;
 	}
 
+	if (iodev->dev->of_node) {
+		ret = max8997_pmic_dt_parse_pdata(iodev, pdata);
+		if (ret)
+			return ret;
+	}
+
 	max8997 = devm_kzalloc(&pdev->dev, sizeof(struct max8997_data),
 			       GFP_KERNEL);
 	if (!max8997)
diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h
index 3f4deb62d6b0..6ae21bf47d64 100644
--- a/include/linux/mfd/max8997-private.h
+++ b/include/linux/mfd/max8997-private.h
@@ -23,6 +23,8 @@
 #define __LINUX_MFD_MAX8997_PRIV_H
 
 #include <linux/i2c.h>
+#include <linux/export.h>
+#include <linux/irqdomain.h>
 
 #define MAX8997_REG_INVALID	(0xff)
 
@@ -314,6 +316,7 @@ enum max8997_irq {
 #define MAX8997_NUM_GPIO	12
 struct max8997_dev {
 	struct device *dev;
+	struct max8997_platform_data *pdata;
 	struct i2c_client *i2c; /* 0xcc / PMIC, Battery Control, and FLASH */
 	struct i2c_client *rtc; /* slave addr 0x0c */
 	struct i2c_client *haptic; /* slave addr 0x90 */
@@ -325,7 +328,7 @@ struct max8997_dev {
 
 	int irq;
 	int ono;
-	int irq_base;
+	struct irq_domain *irq_domain;
 	struct mutex irqlock;
 	int irq_masks_cur[MAX8997_IRQ_GROUP_NR];
 	int irq_masks_cache[MAX8997_IRQ_GROUP_NR];
diff --git a/include/linux/mfd/max8997.h b/include/linux/mfd/max8997.h
index b40c08cd30bc..1d4a4fe6ac33 100644
--- a/include/linux/mfd/max8997.h
+++ b/include/linux/mfd/max8997.h
@@ -75,6 +75,7 @@ enum max8998_regulators {
 struct max8997_regulator_data {
 	int id;
 	struct regulator_init_data *initdata;
+	struct device_node *reg_node;
 };
 
 enum max8997_muic_usb_type {
@@ -181,7 +182,6 @@ struct max8997_led_platform_data {
 
 struct max8997_platform_data {
 	/* IRQ */
-	int irq_base;
 	int ono;
 	int wakeup;