Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC device tree conversions and enablement from Olof Johansson:
 "Continued device tree conversion and enablement across a number of
  platforms; Kirkwood, tegra, i.MX, Exynos, zynq and a couple of other
  smaller series as well.

  ux500 has seen continued conversion for platforms.  Several platforms
  have seen pinctrl-via-devicetree conversions for simpler
  multiplatform.  Tegra is adding data for new devices/drivers, and
  Exynos has a bunch of new bindings and devices added as well.

  So, pretty much the same progression in the right direction as the
  last few releases."

Fix up conflicts as per Olof.

* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (185 commits)
  ARM: ux500: Rename dbx500 cpufreq code to be more generic
  ARM: dts: add missing ux500 device trees
  ARM: ux500: Stop registering the PCM driver from platform code
  ARM: ux500: Move board specific GPIO info out to subordinate DTS files
  ARM: ux500: Disable the MMCI gpio-regulator by default
  ARM: Kirkwood: remove kirkwood_ehci_init() from new boards
  ARM: Kirkwood: Add support LED of OpenBlocks A6
  ARM: Kirkwood: Convert to EHCI via DT for OpenBlocks A6
  ARM: kirkwood: Add NAND partiton map for OpenBlocks A6
  ARM: kirkwood: Add support second I2C bus and RTC on OpenBlocks A6
  ARM: kirkwood: Add support DT of second I2C bus
  ARM: kirkwood: Convert mplcec4 board to pinctrl
  ARM: Kirkwood: Convert km_kirkwood to pinctrl
  ARM: Kirkwood: support 98DX412x kirkwoods with pinctrl
  ARM: Kirkwood: Convert IX2-200 to pinctrl.
  ARM: Kirkwood: Convert lsxl boards to pinctrl.
  ARM: Kirkwood: Convert ib62x0 to pinctrl.
  ARM: Kirkwood: Convert GoFlex Net to pinctrl.
  ARM: Kirkwood: Convert dreamplug to pinctrl.
  ARM: Kirkwood: Convert dockstar to pinctrl.
  ...

17 files changed, 467 insertions, 4 deletions

diff --git a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
index 6528e21..5216b41 100644
--- a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
+++ b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
@@ -4,14 +4,13 @@ Exynos processors include support for multiple power domains which are used
 to gate power to one or more peripherals on the processor.
 
 Required Properties:
-- compatiable: should be one of the following.
+- compatible: should be one of the following.
     * samsung,exynos4210-pd - for exynos4210 type power domain.
 - reg: physical base address of the controller and length of memory mapped
     region.
 
-Optional Properties:
-- samsung,exynos4210-pd-off: Specifies that the power domain is in turned-off
-    state during boot and remains to be turned-off until explicitly turned-on.
+Node of a device using power domains must have a samsung,power-domain property
+defined with a phandle to respective power domain.
 
 Example:
 
@@ -19,3 +18,11 @@ Example:
 		compatible = "samsung,exynos4210-pd";
 		reg = <0x10023C00 0x10>;
 	};
+
+Example of the node using power domain:
+
+	node {
+		/* ... */
+		samsung,power-domain = <&lcd0>;
+		/* ... */
+	};
diff --git a/Documentation/devicetree/bindings/arm/fsl.txt b/Documentation/devicetree/bindings/arm/fsl.txt
index ac9e751..f798187 100644
--- a/Documentation/devicetree/bindings/arm/fsl.txt
+++ b/Documentation/devicetree/bindings/arm/fsl.txt
@@ -41,6 +41,10 @@ i.MX6 Quad SABRE Smart Device Board
 Required root node properties:
     - compatible = "fsl,imx6q-sabresd", "fsl,imx6q";
 
+i.MX6 Quad SABRE Automotive Board
+Required root node properties:
+    - compatible = "fsl,imx6q-sabreauto", "fsl,imx6q";
+
 Generic i.MX boards
 -------------------
 
diff --git a/Documentation/devicetree/bindings/ata/exynos-sata-phy.txt b/Documentation/devicetree/bindings/ata/exynos-sata-phy.txt
new file mode 100644
index 0000000..37824fa
--- /dev/null
+++ b/Documentation/devicetree/bindings/ata/exynos-sata-phy.txt
@@ -0,0 +1,14 @@
+* Samsung SATA PHY Controller
+
+SATA PHY nodes are defined to describe on-chip SATA Physical layer controllers.
+Each SATA PHY controller should have its own node.
+
+Required properties:
+- compatible        : compatible list, contains "samsung,exynos5-sata-phy"
+- reg               : <registers mapping>
+
+Example:
+        sata@ffe07000 {
+                compatible = "samsung,exynos5-sata-phy";
+                reg = <0xffe07000 0x1000>;
+        };
diff --git a/Documentation/devicetree/bindings/ata/exynos-sata.txt b/Documentation/devicetree/bindings/ata/exynos-sata.txt
new file mode 100644
index 0000000..0849f10
--- /dev/null
+++ b/Documentation/devicetree/bindings/ata/exynos-sata.txt
@@ -0,0 +1,17 @@
+* Samsung AHCI SATA Controller
+
+SATA nodes are defined to describe on-chip Serial ATA controllers.
+Each SATA controller should have its own node.
+
+Required properties:
+- compatible        : compatible list, contains "samsung,exynos5-sata"
+- interrupts        : <interrupt mapping for SATA IRQ>
+- reg               : <registers mapping>
+- samsung,sata-freq : <frequency in MHz>
+
+Example:
+        sata@ffe08000 {
+                compatible = "samsung,exynos5-sata";
+                reg = <0xffe08000 0x1000>;
+                interrupts = <115>;
+        };
diff --git a/Documentation/devicetree/bindings/clock/imx25-clock.txt b/Documentation/devicetree/bindings/clock/imx25-clock.txt
new file mode 100644
index 0000000..c2a3525
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/imx25-clock.txt
@@ -0,0 +1,162 @@
+* Clock bindings for Freescale i.MX25
+
+Required properties:
+- compatible: Should be "fsl,imx25-ccm"
+- reg: Address and length of the register set
+- interrupts: Should contain CCM interrupt
+- #clock-cells: Should be <1>
+
+The clock consumer should specify the desired clock by having the clock
+ID in its "clocks" phandle cell.  The following is a full list of i.MX25
+clocks and IDs.
+
+	Clock			ID
+	---------------------------
+	dummy			0
+	osc			1
+	mpll			2
+	upll			3
+	mpll_cpu_3_4		4
+	cpu_sel			5
+	cpu			6
+	ahb			7
+	usb_div			8
+	ipg			9
+	per0_sel		10
+	per1_sel		11
+	per2_sel		12
+	per3_sel		13
+	per4_sel		14
+	per5_sel		15
+	per6_sel		16
+	per7_sel		17
+	per8_sel		18
+	per9_sel		19
+	per10_sel		20
+	per11_sel		21
+	per12_sel		22
+	per13_sel		23
+	per14_sel		24
+	per15_sel		25
+	per0			26
+	per1			27
+	per2			28
+	per3			29
+	per4			30
+	per5			31
+	per6			32
+	per7			33
+	per8			34
+	per9			35
+	per10			36
+	per11			37
+	per12			38
+	per13			39
+	per14			40
+	per15			41
+	csi_ipg_per		42
+	epit_ipg_per		43
+	esai_ipg_per		44
+	esdhc1_ipg_per		45
+	esdhc2_ipg_per		46
+	gpt_ipg_per		47
+	i2c_ipg_per		48
+	lcdc_ipg_per		49
+	nfc_ipg_per		50
+	owire_ipg_per		51
+	pwm_ipg_per		52
+	sim1_ipg_per		53
+	sim2_ipg_per		54
+	ssi1_ipg_per		55
+	ssi2_ipg_per		56
+	uart_ipg_per		57
+	ata_ahb			58
+	reserved		59
+	csi_ahb			60
+	emi_ahb			61
+	esai_ahb		62
+	esdhc1_ahb		63
+	esdhc2_ahb		64
+	fec_ahb			65
+	lcdc_ahb		66
+	rtic_ahb		67
+	sdma_ahb		68
+	slcdc_ahb		69
+	usbotg_ahb		70
+	reserved		71
+	reserved		72
+	reserved		73
+	reserved		74
+	can1_ipg		75
+	can2_ipg		76
+	csi_ipg			77
+	cspi1_ipg		78
+	cspi2_ipg		79
+	cspi3_ipg		80
+	dryice_ipg		81
+	ect_ipg			82
+	epit1_ipg		83
+	epit2_ipg		84
+	reserved		85
+	esdhc1_ipg		86
+	esdhc2_ipg		87
+	fec_ipg			88
+	reserved		89
+	reserved		90
+	reserved		91
+	gpt1_ipg		92
+	gpt2_ipg		93
+	gpt3_ipg		94
+	gpt4_ipg		95
+	reserved		96
+	reserved		97
+	reserved		98
+	iim_ipg			99
+	reserved		100
+	reserved		101
+	kpp_ipg			102
+	lcdc_ipg		103
+	reserved		104
+	pwm1_ipg		105
+	pwm2_ipg		106
+	pwm3_ipg		107
+	pwm4_ipg		108
+	rngb_ipg		109
+	reserved		110
+	scc_ipg			111
+	sdma_ipg		112
+	sim1_ipg		113
+	sim2_ipg		114
+	slcdc_ipg		115
+	spba_ipg		116
+	ssi1_ipg		117
+	ssi2_ipg		118
+	tsc_ipg			119
+	uart1_ipg		120
+	uart2_ipg		121
+	uart3_ipg		122
+	uart4_ipg		123
+	uart5_ipg		124
+	reserved		125
+	wdt_ipg			126
+
+Examples:
+
+clks: ccm@53f80000 {
+	compatible = "fsl,imx25-ccm";
+	reg = <0x53f80000 0x4000>;
+	interrupts = <31>;
+	clock-output-names = ...
+			"uart_ipg",
+			"uart_serial",
+			...;
+};
+
+uart1: serial@43f90000 {
+	compatible = "fsl,imx25-uart", "fsl,imx21-uart";
+	reg = <0x43f90000 0x4000>;
+	interrupts = <45>;
+	clocks = <&clks 79>, <&clks 50>;
+	clock-names = "ipg", "per";
+	status = "disabled";
+};
diff --git a/Documentation/devicetree/bindings/clock/zynq-7000.txt b/Documentation/devicetree/bindings/clock/zynq-7000.txt
new file mode 100644
index 0000000..23ae1db
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/zynq-7000.txt
@@ -0,0 +1,55 @@
+Device Tree Clock bindings for the Zynq 7000 EPP
+
+The Zynq EPP has several different clk providers, each with there own bindings.
+The purpose of this document is to document their usage.
+
+See clock_bindings.txt for more information on the generic clock bindings.
+See Chapter 25 of Zynq TRM for more information about Zynq clocks.
+
+== PLLs ==
+
+Used to describe the ARM_PLL, DDR_PLL, and IO_PLL.
+
+Required properties:
+- #clock-cells : shall be 0 (only one clock is output from this node)
+- compatible : "xlnx,zynq-pll"
+- reg : pair of u32 values, which are the address offsets within the SLCR
+        of the relevant PLL_CTRL register and PLL_CFG register respectively
+- clocks : phandle for parent clock.  should be the phandle for ps_clk
+
+Optional properties:
+- clock-output-names : name of the output clock
+
+Example:
+	armpll: armpll {
+		#clock-cells = <0>;
+		compatible = "xlnx,zynq-pll";
+		clocks = <&ps_clk>;
+		reg = <0x100 0x110>;
+		clock-output-names = "armpll";
+	};
+
+== Peripheral clocks ==
+
+Describes clock node for the SDIO, SMC, SPI, QSPI, and UART clocks.
+
+Required properties:
+- #clock-cells : shall be 1
+- compatible : "xlnx,zynq-periph-clock"
+- reg : a single u32 value, describing the offset within the SLCR where
+        the CLK_CTRL register is found for this peripheral
+- clocks : phandle for parent clocks.  should hold phandles for
+           the IO_PLL, ARM_PLL, and DDR_PLL in order
+- clock-output-names : names of the output clock(s).  For peripherals that have
+                       two output clocks (for example, the UART), two clocks
+                       should be listed.
+
+Example:
+	uart_clk: uart_clk {
+		#clock-cells = <1>;
+		compatible = "xlnx,zynq-periph-clock";
+		clocks = <&iopll &armpll &ddrpll>;
+		reg = <0x154>;
+		clock-output-names = "uart0_ref_clk",
+				     "uart1_ref_clk";
+	};
diff --git a/Documentation/devicetree/bindings/drm/exynos/hdmi.txt b/Documentation/devicetree/bindings/drm/exynos/hdmi.txt
new file mode 100644
index 0000000..589edee
--- /dev/null
+++ b/Documentation/devicetree/bindings/drm/exynos/hdmi.txt
@@ -0,0 +1,22 @@
+Device-Tree bindings for drm hdmi driver
+
+Required properties:
+- compatible: value should be "samsung,exynos5-hdmi".
+- reg: physical base address of the hdmi and length of memory mapped
+	region.
+- interrupts: interrupt number to the cpu.
+- hpd-gpio: following information about the hotplug gpio pin.
+	a) phandle of the gpio controller node.
+	b) pin number within the gpio controller.
+	c) pin function mode.
+	d) optional flags and pull up/down.
+	e) drive strength.
+
+Example:
+
+	hdmi {
+		compatible = "samsung,exynos5-hdmi";
+		reg = <0x14530000 0x100000>;
+		interrupts = <0 95 0>;
+		hpd-gpio = <&gpx3 7 0xf 1 3>;
+	};
diff --git a/Documentation/devicetree/bindings/drm/exynos/hdmiddc.txt b/Documentation/devicetree/bindings/drm/exynos/hdmiddc.txt
new file mode 100644
index 0000000..fa166d9
--- /dev/null
+++ b/Documentation/devicetree/bindings/drm/exynos/hdmiddc.txt
@@ -0,0 +1,12 @@
+Device-Tree bindings for hdmiddc driver
+
+Required properties:
+- compatible: value should be "samsung,exynos5-hdmiddc".
+- reg: I2C address of the hdmiddc device.
+
+Example:
+
+	hdmiddc {
+		compatible = "samsung,exynos5-hdmiddc";
+		reg = <0x50>;
+	};
diff --git a/Documentation/devicetree/bindings/drm/exynos/hdmiphy.txt b/Documentation/devicetree/bindings/drm/exynos/hdmiphy.txt
new file mode 100644
index 0000000..858f4f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/drm/exynos/hdmiphy.txt
@@ -0,0 +1,12 @@
+Device-Tree bindings for hdmiphy driver
+
+Required properties:
+- compatible: value should be "samsung,exynos5-hdmiphy".
+- reg: I2C address of the hdmiphy device.
+
+Example:
+
+	hdmiphy {
+		compatible = "samsung,exynos5-hdmiphy";
+		reg = <0x38>;
+	};
diff --git a/Documentation/devicetree/bindings/drm/exynos/mixer.txt b/Documentation/devicetree/bindings/drm/exynos/mixer.txt
new file mode 100644
index 0000000..9b2ea03
--- /dev/null
+++ b/Documentation/devicetree/bindings/drm/exynos/mixer.txt
@@ -0,0 +1,15 @@
+Device-Tree bindings for mixer driver
+
+Required properties:
+- compatible: value should be "samsung,exynos5-mixer".
+- reg: physical base address of the mixer and length of memory mapped
+	region.
+- interrupts: interrupt number to the cpu.
+
+Example:
+
+	mixer {
+		compatible = "samsung,exynos5-mixer";
+		reg = <0x14450000 0x10000>;
+		interrupts = <0 94 0>;
+	};
diff --git a/Documentation/devicetree/bindings/gpio/gpio-poweroff.txt b/Documentation/devicetree/bindings/gpio/gpio-poweroff.txt
new file mode 100644
index 0000000..558cdf3
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-poweroff.txt
@@ -0,0 +1,22 @@
+GPIO line that should be set high/low to power off a device
+
+Required properties:
+- compatible : should be "gpio-poweroff".
+- gpios : The GPIO to set high/low, see "gpios property" in
+  Documentation/devicetree/bindings/gpio/gpio.txt. If the pin should be
+  low to power down the board set it to "Active Low", otherwise set
+  gpio to "Active High".
+
+Optional properties:
+- input : Initially configure the GPIO line as an input. Only reconfigure
+  it to an output when the pm_power_off function is called. If this optional
+  property is not specified, the GPIO is initialized as an output in its
+  inactive state.
+
+
+Examples:
+
+gpio-poweroff {
+	compatible = "gpio-poweroff";
+	gpios = <&gpio 4 0>; /* GPIO 4 Active Low */
+};
diff --git a/Documentation/devicetree/bindings/input/touchscreen/bu21013.txt b/Documentation/devicetree/bindings/input/touchscreen/bu21013.txt
new file mode 100644
index 0000000..ca5a2c8
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/bu21013.txt
@@ -0,0 +1,28 @@
+* Rohm BU21013 Touch Screen
+
+Required properties:
+ - compatible              : "rohm,bu21013_tp"
+ - reg                     :  I2C device address
+
+Optional properties:
+ - touch-gpio              : GPIO pin registering a touch event
+ - <supply_name>-supply    : Phandle to a regulator supply
+ - rohm,touch-max-x        : Maximum outward permitted limit in the X axis
+ - rohm,touch-max-y        : Maximum outward permitted limit in the Y axis
+ - rohm,flip-x             : Flip touch coordinates on the X axis
+ - rohm,flip-y             : Flip touch coordinates on the Y axis
+
+Example:
+
+	i2c@80110000 {
+		bu21013_tp@0x5c {
+			compatible = "rohm,bu21013_tp";
+			reg = <0x5c>;
+			touch-gpio = <&gpio2 20 0x4>;
+			avdd-supply = <&ab8500_ldo_aux1_reg>;
+
+			rohm,touch-max-x = <384>;
+			rohm,touch-max-y = <704>;
+			rohm,flip-y;
+		};
+	};
diff --git a/Documentation/devicetree/bindings/media/s5p-mfc.txt b/Documentation/devicetree/bindings/media/s5p-mfc.txt
new file mode 100644
index 0000000..67ec3d4
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/s5p-mfc.txt
@@ -0,0 +1,23 @@
+* Samsung Multi Format Codec (MFC)
+
+Multi Format Codec (MFC) is the IP present in Samsung SoCs which
+supports high resolution decoding and encoding functionalities.
+The MFC device driver is a v4l2 driver which can encode/decode
+video raw/elementary streams and has support for all popular
+video codecs.
+
+Required properties:
+  - compatible : value should be either one among the following
+	(a) "samsung,mfc-v5" for MFC v5 present in Exynos4 SoCs
+	(b) "samsung,mfc-v6" for MFC v6 present in Exynos5 SoCs
+
+  - reg : Physical base address of the IP registers and length of memory
+	  mapped region.
+
+  - interrupts : MFC interrupt number to the CPU.
+
+  - samsung,mfc-r : Base address of the first memory bank used by MFC
+		    for DMA contiguous memory allocation and its size.
+
+  - samsung,mfc-l : Base address of the second memory bank used by MFC
+		    for DMA contiguous memory allocation and its size.
diff --git a/Documentation/devicetree/bindings/pinctrl/marvell,kirkwood-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/marvell,kirkwood-pinctrl.txt
index 361bccb..95daf63 100644
--- a/Documentation/devicetree/bindings/pinctrl/marvell,kirkwood-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/marvell,kirkwood-pinctrl.txt
@@ -7,8 +7,10 @@ Required properties:
 - compatible: "marvell,88f6180-pinctrl",
               "marvell,88f6190-pinctrl", "marvell,88f6192-pinctrl",
               "marvell,88f6281-pinctrl", "marvell,88f6282-pinctrl"
+              "marvell,98dx4122-pinctrl"
 
 This driver supports all kirkwood variants, i.e. 88f6180, 88f619x, and 88f628x.
+It also support the 88f6281-based variant in the 98dx412x Bobcat SoCs.
 
 Available mpp pins/groups and functions:
 Note: brackets (x) are not part of the mpp name for marvell,function and given
@@ -277,3 +279,40 @@ mpp46         46       gpio, ts(mp10), tdm(fs), lcd(hsync)
 mpp47         47       gpio, ts(mp11), tdm(drx), lcd(vsync)
 mpp48         48       gpio, ts(mp12), tdm(dtx), lcd(d16)
 mpp49         49       gpo, tdm(rx0ql), pex(clkreq), lcd(d17)
+
+* Marvell Bobcat 98dx4122
+
+name          pins     functions
+================================================================================
+mpp0          0        gpio, nand(io2), spi(cs)
+mpp1          1        gpo, nand(io3), spi(mosi)
+mpp2          2        gpo, nand(io4), spi(sck)
+mpp3          3        gpo, nand(io5), spi(miso)
+mpp4          4        gpio, nand(io6), uart0(rxd)
+mpp5          5        gpo, nand(io7), uart0(txd)
+mpp6          6        sysrst(out), spi(mosi)
+mpp7          7        gpo, pex(rsto), spi(cs)
+mpp8          8        gpio, twsi0(sda), uart0(rts), uart1(rts)
+mpp9          9        gpio, twsi(sck), uart0(cts), uart1(cts)
+mpp10         10       gpo, spi(sck), uart0(txd)
+mpp11         11       gpio, spi(miso), uart0(rxd)
+mpp13         13       gpio, uart1(txd)
+mpp14         14       gpio, uart1(rxd)
+mpp15         15       gpio, uart0(rts)
+mpp16         16       gpio, uart0(cts)
+mpp18         18       gpo, nand(io0)
+mpp19         19       gpo, nand(io1)
+mpp34         34       gpio
+mpp35         35       gpio
+mpp36         36       gpio
+mpp37         37       gpio
+mpp38         38       gpio
+mpp39         39       gpio
+mpp40         40       gpio
+mpp41         41       gpio
+mpp42         42       gpio
+mpp43         43       gpio
+mpp44         44       gpio
+mpp45         45       gpio
+mpp49         49       gpio
+
diff --git a/Documentation/devicetree/bindings/usb/ehci-orion.txt b/Documentation/devicetree/bindings/usb/ehci-orion.txt
new file mode 100644
index 0000000..6bc09ec
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ehci-orion.txt
@@ -0,0 +1,15 @@
+* EHCI controller, Orion Marvell variants
+
+Required properties:
+- compatible: must be "marvell,orion-ehci"
+- reg: physical base address of the controller and length of memory mapped
+  region.
+- interrupts: The EHCI interrupt
+
+Example:
+
+	ehci@50000 {
+		compatible = "marvell,orion-ehci";
+		reg = <0x50000 0x1000>;
+		interrupts = <19>;
+	};
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 770a019..902b1b1 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -55,4 +55,5 @@ ti	Texas Instruments
 via	VIA Technologies, Inc.
 wlf	Wolfson Microelectronics
 wm	Wondermedia Technologies, Inc.
+winbond Winbond Electronics corp.
 xlnx	Xilinx
diff --git a/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
new file mode 100644
index 0000000..2957ebb
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
@@ -0,0 +1,15 @@
+* Atmel Watchdog Timers
+
+** at91sam9-wdt
+
+Required properties:
+- compatible: must be "atmel,at91sam9260-wdt".
+- reg: physical base address of the controller and length of memory mapped
+  region.
+
+Example:
+
+	watchdog@fffffd40 {
+		compatible = "atmel,at91sam9260-wdt";
+		reg = <0xfffffd40 0x10>;
+	};