Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

36 files changed, 1205 insertions, 0 deletions

diff --git a/kernel/Documentation/devicetree/bindings/serial/8250.txt b/kernel/Documentation/devicetree/bindings/serial/8250.txt
new file mode 100644
index 000000000..91d5ab0e6
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/8250.txt
@@ -0,0 +1,66 @@
+* UART (Universal Asynchronous Receiver/Transmitter)
+
+Required properties:
+- compatible : one of:
+	- "ns8250"
+	- "ns16450"
+	- "ns16550a"
+	- "ns16550"
+	- "ns16750"
+	- "ns16850"
+	- For Tegra20, must contain "nvidia,tegra20-uart"
+	- For other Tegra, must contain '"nvidia,<chip>-uart",
+	  "nvidia,tegra20-uart"' where <chip> is tegra30, tegra114, tegra124,
+	  tegra132, or tegra210.
+	- "nxp,lpc3220-uart"
+	- "ralink,rt2880-uart"
+	- "ibm,qpace-nwp-serial"
+	- "altr,16550-FIFO32"
+	- "altr,16550-FIFO64"
+	- "altr,16550-FIFO128"
+	- "fsl,16550-FIFO64"
+	- "fsl,ns16550"
+	- "serial" if the port type is unknown.
+- reg : offset and length of the register set for the device.
+- interrupts : should contain uart interrupt.
+- clock-frequency : the input clock frequency for the UART
+	 or
+  clocks phandle to refer to the clk used as per Documentation/devicetree
+  /bindings/clock/clock-bindings.txt
+
+Optional properties:
+- current-speed : the current active speed of the UART.
+- reg-offset : offset to apply to the mapbase from the start of the registers.
+- reg-shift : quantity to shift the register offsets by.
+- reg-io-width : the size (in bytes) of the IO accesses that should be
+  performed on the device.  There are some systems that require 32-bit
+  accesses to the UART (e.g. TI davinci).
+- used-by-rtas : set to indicate that the port is in use by the OpenFirmware
+  RTAS and should not be registered.
+- no-loopback-test: set to indicate that the port does not implements loopback
+  test mode
+- fifo-size: the fifo size of the UART.
+- auto-flow-control: one way to enable automatic flow control support. The
+  driver is allowed to detect support for the capability even without this
+  property.
+
+Note:
+* fsl,ns16550:
+  ------------
+  Freescale DUART is very similar to the PC16552D (and to a
+  pair of NS16550A), albeit with some nonstandard behavior such as
+  erratum A-004737 (relating to incorrect BRK handling).
+
+  Represents a single port that is compatible with the DUART found
+  on many Freescale chips (examples include mpc8349, mpc8548,
+  mpc8641d, p4080 and ls2085a).
+
+Example:
+
+	uart@80230000 {
+		compatible = "ns8250";
+		reg = <0x80230000 0x100>;
+		clock-frequency = <3686400>;
+		interrupts = <10>;
+		reg-shift = <2>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/altera_jtaguart.txt b/kernel/Documentation/devicetree/bindings/serial/altera_jtaguart.txt
new file mode 100644
index 000000000..55a901051
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/altera_jtaguart.txt
@@ -0,0 +1,5 @@
+Altera JTAG UART
+
+Required properties:
+- compatible : should be "ALTR,juart-1.0" <DEPRECATED>
+- compatible : should be "altr,juart-1.0"
diff --git a/kernel/Documentation/devicetree/bindings/serial/altera_uart.txt b/kernel/Documentation/devicetree/bindings/serial/altera_uart.txt
new file mode 100644
index 000000000..81bf7ffb1
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/altera_uart.txt
@@ -0,0 +1,8 @@
+Altera UART
+
+Required properties:
+- compatible : should be "ALTR,uart-1.0" <DEPRECATED>
+- compatible : should be "altr,uart-1.0"
+
+Optional properties:
+- clock-frequency : frequency of the clock input to the UART
diff --git a/kernel/Documentation/devicetree/bindings/serial/arc-uart.txt b/kernel/Documentation/devicetree/bindings/serial/arc-uart.txt
new file mode 100644
index 000000000..5cae2eb68
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/arc-uart.txt
@@ -0,0 +1,26 @@
+* Synopsys ARC UART : Non standard UART used in some of the ARC FPGA boards
+
+Required properties:
+- compatible		: "snps,arc-uart"
+- reg			: offset and length of the register set for the device.
+- interrupts		: device interrupt
+- clock-frequency	: the input clock frequency for the UART
+- current-speed		: baud rate for UART
+
+e.g.
+
+arcuart0: serial@c0fc1000 {
+	compatible = "snps,arc-uart";
+	reg = <0xc0fc1000 0x100>;
+	interrupts = <5>;
+	clock-frequency = <80000000>;
+	current-speed = <115200>;
+	status = "okay";
+};
+
+Note: Each port should have an alias correctly numbered in "aliases" node.
+
+e.g.
+aliases {
+	serial0 = &arcuart0;
+};
diff --git a/kernel/Documentation/devicetree/bindings/serial/atmel-usart.txt b/kernel/Documentation/devicetree/bindings/serial/atmel-usart.txt
new file mode 100644
index 000000000..90787aa2e
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/atmel-usart.txt
@@ -0,0 +1,60 @@
+* Atmel Universal Synchronous Asynchronous Receiver/Transmitter (USART)
+
+Required properties:
+- compatible: Should be "atmel,<chip>-usart" or "atmel,<chip>-dbgu"
+  The compatible <chip> indicated will be the first SoC to support an
+  additional mode or an USART new feature.
+  For the dbgu UART, use "atmel,<chip>-dbgu", "atmel,<chip>-usart"
+- reg: Should contain registers location and length
+- interrupts: Should contain interrupt
+- clock-names: tuple listing input clock names.
+	Required elements: "usart"
+- clocks: phandles to input clocks.
+
+Optional properties:
+- atmel,use-dma-rx: use of PDC or DMA for receiving data
+- atmel,use-dma-tx: use of PDC or DMA for transmitting data
+- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD line respectively.
+  It will use specified PIO instead of the peripheral function pin for the USART feature.
+  If unsure, don't specify this property.
+- add dma bindings for dma transfer:
+	- dmas: DMA specifier, consisting of a phandle to DMA controller node,
+		memory peripheral interface and USART DMA channel ID, FIFO configuration.
+		Refer to dma.txt and atmel-dma.txt for details.
+	- dma-names: "rx" for RX channel, "tx" for TX channel.
+
+<chip> compatible description:
+- at91rm9200:  legacy USART support
+- at91sam9260: generic USART implementation for SAM9 SoCs
+
+Example:
+- use PDC:
+	usart0: serial@fff8c000 {
+		compatible = "atmel,at91sam9260-usart";
+		reg = <0xfff8c000 0x4000>;
+		interrupts = <7>;
+		clocks = <&usart0_clk>;
+		clock-names = "usart";
+		atmel,use-dma-rx;
+		atmel,use-dma-tx;
+		rts-gpios = <&pioD 15 GPIO_ACTIVE_LOW>;
+		cts-gpios = <&pioD 16 GPIO_ACTIVE_LOW>;
+		dtr-gpios = <&pioD 17 GPIO_ACTIVE_LOW>;
+		dsr-gpios = <&pioD 18 GPIO_ACTIVE_LOW>;
+		dcd-gpios = <&pioD 20 GPIO_ACTIVE_LOW>;
+		rng-gpios = <&pioD 19 GPIO_ACTIVE_LOW>;
+	};
+
+- use DMA:
+	usart0: serial@f001c000 {
+		compatible = "atmel,at91sam9260-usart";
+		reg = <0xf001c000 0x100>;
+		interrupts = <12 4 5>;
+		clocks = <&usart0_clk>;
+		clock-names = "usart";
+		atmel,use-dma-rx;
+		atmel,use-dma-tx;
+		dmas = <&dma0 2 0x3>,
+		       <&dma0 2 0x204>;
+		dma-names = "tx", "rx";
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/axis,etraxfs-uart.txt b/kernel/Documentation/devicetree/bindings/serial/axis,etraxfs-uart.txt
new file mode 100644
index 000000000..ebcbb62c0
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/axis,etraxfs-uart.txt
@@ -0,0 +1,19 @@
+ETRAX FS UART
+
+Required properties:
+- compatible : "axis,etraxfs-uart"
+- reg: offset and length of the register set for the device.
+- interrupts: device interrupt
+
+Optional properties:
+- {dtr,dsr,ri,cd}-gpios: specify a GPIO for DTR/DSR/RI/CD
+  line respectively.
+
+Example:
+
+serial@b00260000 {
+	compatible = "axis,etraxfs-uart";
+	reg = <0xb0026000 0x1000>;
+	interrupts = <68>;
+	status = "disabled";
+};
diff --git a/kernel/Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.txt b/kernel/Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.txt
new file mode 100644
index 000000000..5c52e5eef
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.txt
@@ -0,0 +1,30 @@
+* BCM63xx UART
+
+Required properties:
+
+- compatible: "brcm,bcm6345-uart"
+
+- reg: The base address of the UART register bank.
+
+- interrupts: A single interrupt specifier.
+
+- clocks: Clock driving the hardware; used to figure out the baud rate
+  divisor.
+
+Example:
+
+	uart0: serial@14e00520 {
+		compatible = "brcm,bcm6345-uart";
+		reg = <0x14e00520 0x18>;
+		interrupt-parent = <&periph_intc>;
+		interrupts = <2>;
+		clocks = <&periph_clk>;
+	};
+
+	clocks {
+		periph_clk: periph_clk@0 {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <54000000>;
+		};
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/cavium-uart.txt b/kernel/Documentation/devicetree/bindings/serial/cavium-uart.txt
new file mode 100644
index 000000000..87a6c375c
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/cavium-uart.txt
@@ -0,0 +1,19 @@
+* Universal Asynchronous Receiver/Transmitter (UART)
+
+- compatible: "cavium,octeon-3860-uart"
+
+  Compatibility with all cn3XXX, cn5XXX and cn6XXX SOCs.
+
+- reg: The base address of the UART register bank.
+
+- interrupts: A single interrupt specifier.
+
+- current-speed: Optional, the current bit rate in bits per second.
+
+Example:
+	uart1: serial@1180000000c00 {
+		compatible = "cavium,octeon-3860-uart","ns16550";
+		reg = <0x11800 0x00000c00 0x0 0x400>;
+		current-speed = <115200>;
+		interrupts = <0 35>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/cdns,uart.txt b/kernel/Documentation/devicetree/bindings/serial/cdns,uart.txt
new file mode 100644
index 000000000..a3eb154c3
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/cdns,uart.txt
@@ -0,0 +1,20 @@
+Binding for Cadence UART Controller
+
+Required properties:
+- compatible : should be "cdns,uart-r1p8", or "xlnx,xuartps"
+- reg: Should contain UART controller registers location and length.
+- interrupts: Should contain UART controller interrupts.
+- clocks: Must contain phandles to the UART clocks
+  See ../clocks/clock-bindings.txt for details.
+- clock-names: Tuple to identify input clocks, must contain "uart_clk" and "pclk"
+  See ../clocks/clock-bindings.txt for details.
+
+
+Example:
+	uart@e0000000 {
+		compatible = "cdns,uart-r1p8";
+		clocks = <&clkc 23>, <&clkc 40>;
+		clock-names = "uart_clk", "pclk";
+		reg = <0xE0000000 0x1000>;
+		interrupts = <0 27 4>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/cirrus,clps711x-uart.txt b/kernel/Documentation/devicetree/bindings/serial/cirrus,clps711x-uart.txt
new file mode 100644
index 000000000..caaeb2583
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/cirrus,clps711x-uart.txt
@@ -0,0 +1,31 @@
+* Cirrus Logic CLPS711X Universal Asynchronous Receiver/Transmitter (UART)
+
+Required properties:
+- compatible: Should be "cirrus,clps711x-uart".
+- reg: Address and length of the register set for the device.
+- interrupts: Should contain UART TX and RX interrupt.
+- clocks: Should contain UART core clock number.
+- syscon: Phandle to SYSCON node, which contain UART control bits.
+
+Optional properties:
+- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD
+  line respectively.
+
+Note: Each UART port should have an alias correctly numbered
+in "aliases" node.
+
+Example:
+	aliases {
+		serial0 = &uart1;
+	};
+
+	uart1: uart@80000480 {
+		compatible = "cirrus,clps711x-uart";
+		reg = <0x80000480 0x80>;
+		interrupts = <12 13>;
+		clocks = <&clks 11>;
+		syscon = <&syscon1>;
+		cts-gpios = <&sysgpio 0 GPIO_ACTIVE_LOW>;
+		dsr-gpios = <&sysgpio 1 GPIO_ACTIVE_LOW>;
+		dcd-gpios = <&sysgpio 2 GPIO_ACTIVE_LOW>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/digicolor-usart.txt b/kernel/Documentation/devicetree/bindings/serial/digicolor-usart.txt
new file mode 100644
index 000000000..2d3ede668
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/digicolor-usart.txt
@@ -0,0 +1,27 @@
+Binding for Conexant Digicolor USART
+
+Note: this binding is only applicable for using the USART peripheral as
+UART. USART also support synchronous serial protocols like SPI and I2S. Use
+the binding that matches the wiring of your system.
+
+Required properties:
+- compatible : should be "cnxt,cx92755-usart".
+- reg: Should contain USART controller registers location and length.
+- interrupts: Should contain a single USART controller interrupt.
+- clocks: Must contain phandles to the USART clock
+  See ../clocks/clock-bindings.txt for details.
+
+Note: Each UART port should have an alias correctly numbered
+in "aliases" node.
+
+Example:
+	aliases {
+		serial0 = &uart0;
+	};
+
+	uart0: uart@f0000740 {
+		compatible = "cnxt,cx92755-usart";
+		reg = <0xf0000740 0x20>;
+		clocks = <&main_clk>;
+		interrupts = <44>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/efm32-uart.txt b/kernel/Documentation/devicetree/bindings/serial/efm32-uart.txt
new file mode 100644
index 000000000..8adbab268
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/efm32-uart.txt
@@ -0,0 +1,20 @@
+* Energymicro efm32 UART
+
+Required properties:
+- compatible : Should be "energymicro,efm32-uart"
+- reg : Address and length of the register set
+- interrupts : Should contain uart interrupt
+
+Optional properties:
+- energymicro,location : Decides the location of the USART I/O pins.
+  Allowed range : [0 .. 5]
+  Default: 0
+
+Example:
+
+uart@0x4000c400 {
+	compatible = "energymicro,efm32-uart";
+	reg = <0x4000c400 0x400>;
+	interrupts = <15>;
+	energymicro,location = <0>;
+};
diff --git a/kernel/Documentation/devicetree/bindings/serial/fsl-imx-uart.txt b/kernel/Documentation/devicetree/bindings/serial/fsl-imx-uart.txt
new file mode 100644
index 000000000..35ae1fb35
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/fsl-imx-uart.txt
@@ -0,0 +1,29 @@
+* Freescale i.MX Universal Asynchronous Receiver/Transmitter (UART)
+
+Required properties:
+- compatible : Should be "fsl,<soc>-uart"
+- reg : Address and length of the register set for the device
+- interrupts : Should contain uart interrupt
+
+Optional properties:
+- fsl,uart-has-rtscts : Indicate the uart has rts and cts
+- fsl,irda-mode : Indicate the uart supports irda mode
+- fsl,dte-mode : Indicate the uart works in DTE mode. The uart works
+                  is DCE mode by default.
+
+Note: Each uart controller should have an alias correctly numbered
+in "aliases" node.
+
+Example:
+
+aliases {
+	serial0 = &uart1;
+};
+
+uart1: serial@73fbc000 {
+	compatible = "fsl,imx51-uart", "fsl,imx21-uart";
+	reg = <0x73fbc000 0x4000>;
+	interrupts = <31>;
+	fsl,uart-has-rtscts;
+	fsl,dte-mode;
+};
diff --git a/kernel/Documentation/devicetree/bindings/serial/fsl-lpuart.txt b/kernel/Documentation/devicetree/bindings/serial/fsl-lpuart.txt
new file mode 100644
index 000000000..c95005efb
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/fsl-lpuart.txt
@@ -0,0 +1,31 @@
+* Freescale low power universal asynchronous receiver/transmitter (lpuart)
+
+Required properties:
+- compatible :
+  - "fsl,vf610-lpuart" for lpuart compatible with the one integrated
+    on Vybrid vf610 SoC with 8-bit register organization
+  - "fsl,ls1021a-lpuart" for lpuart compatible with the one integrated
+    on LS1021A SoC with 32-bit big-endian register organization
+- reg : Address and length of the register set for the device
+- interrupts : Should contain uart interrupt
+- clocks : phandle + clock specifier pairs, one for each entry in clock-names
+- clock-names : should contain: "ipg" - the uart clock
+
+Optional properties:
+- dmas: A list of two dma specifiers, one for each entry in dma-names.
+- dma-names: should contain "tx" and "rx".
+
+Note: Optional properties for DMA support. Write them both or both not.
+
+Example:
+
+uart0: serial@40027000 {
+		compatible = "fsl,vf610-lpuart";
+		reg = <0x40027000 0x1000>;
+		interrupts = <0 61 0x00>;
+		clocks = <&clks VF610_CLK_UART0>;
+		clock-names = "ipg";
+		dmas = <&edma0 0 2>,
+			<&edma0 0 3>;
+		dma-names = "rx","tx";
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/fsl-mxs-auart.txt b/kernel/Documentation/devicetree/bindings/serial/fsl-mxs-auart.txt
new file mode 100644
index 000000000..7c408c87e
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/fsl-mxs-auart.txt
@@ -0,0 +1,45 @@
+* Freescale MXS Application UART (AUART)
+
+Required properties:
+- compatible : Should be "fsl,<soc>-auart". The supported SoCs include
+  imx23 and imx28.
+- reg : Address and length of the register set for the device
+- interrupts : Should contain the auart interrupt numbers
+- dmas: DMA specifier, consisting of a phandle to DMA controller node
+  and AUART DMA channel ID.
+  Refer to dma.txt and fsl-mxs-dma.txt for details.
+- dma-names: "rx" for RX channel, "tx" for TX channel.
+
+Optional properties:
+- fsl,uart-has-rtscts : Indicate the UART has RTS and CTS lines
+  for hardware flow control,
+	it also means you enable the DMA support for this UART.
+- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD
+  line respectively. It will use specified PIO instead of the peripheral
+  function pin for the USART feature.
+  If unsure, don't specify this property.
+
+Example:
+auart0: serial@8006a000 {
+	compatible = "fsl,imx28-auart", "fsl,imx23-auart";
+	reg = <0x8006a000 0x2000>;
+	interrupts = <112>;
+	dmas = <&dma_apbx 8>, <&dma_apbx 9>;
+	dma-names = "rx", "tx";
+	cts-gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;
+	dsr-gpios = <&gpio1 16 GPIO_ACTIVE_LOW>;
+	dcd-gpios = <&gpio1 17 GPIO_ACTIVE_LOW>;
+};
+
+Note: Each auart port should have an alias correctly numbered in "aliases"
+node.
+
+Example:
+
+aliases {
+	serial0 = &auart0;
+	serial1 = &auart1;
+	serial2 = &auart2;
+	serial3 = &auart3;
+	serial4 = &auart4;
+};
diff --git a/kernel/Documentation/devicetree/bindings/serial/lantiq_asc.txt b/kernel/Documentation/devicetree/bindings/serial/lantiq_asc.txt
new file mode 100644
index 000000000..5b78591aa
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/lantiq_asc.txt
@@ -0,0 +1,16 @@
+Lantiq SoC ASC serial controller
+
+Required properties:
+- compatible : Should be "lantiq,asc"
+- reg : Address and length of the register set for the device
+- interrupts: the 3 (tx rx err) interrupt numbers. The interrupt specifier
+  depends on the interrupt-parent interrupt controller.
+
+Example:
+
+asc1: serial@E100C00 {
+	compatible = "lantiq,asc";
+	reg = <0xE100C00 0x400>;
+	interrupt-parent = <&icu0>;
+	interrupts = <112 113 114>;
+};
diff --git a/kernel/Documentation/devicetree/bindings/serial/maxim,max310x.txt b/kernel/Documentation/devicetree/bindings/serial/maxim,max310x.txt
new file mode 100644
index 000000000..83a919c24
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/maxim,max310x.txt
@@ -0,0 +1,36 @@
+* Maxim MAX310X advanced Universal Asynchronous Receiver-Transmitter (UART)
+
+Required properties:
+- compatible: Should be one of the following:
+  - "maxim,max3107" for Maxim MAX3107,
+  - "maxim,max3108" for Maxim MAX3108,
+  - "maxim,max3109" for Maxim MAX3109,
+  - "maxim,max14830" for Maxim MAX14830.
+- reg: SPI chip select number.
+- interrupt-parent: The phandle for the interrupt controller that
+  services interrupts for this IC.
+- interrupts: Specifies the interrupt source of the parent interrupt
+  controller. The format of the interrupt specifier depends on the
+  parent interrupt controller.
+- clocks: phandle to the IC source clock.
+- clock-names: Should be "xtal" if clock is an external crystal or
+  "osc" if an external clock source is used.
+
+Optional properties:
+- gpio-controller: Marks the device node as a GPIO controller.
+- #gpio-cells: Should be two. The first cell is the GPIO number and
+  the second cell is used to specify the GPIO polarity:
+    0 = active high,
+    1 = active low.
+
+Example:
+	max14830: max14830@0 {
+		compatible = "maxim,max14830";
+		reg = <0>;
+		clocks = <&clk20m>;
+		clock-names = "osc";
+		interrupt-parent = <&gpio3>;
+		interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/mrvl,pxa-ssp.txt b/kernel/Documentation/devicetree/bindings/serial/mrvl,pxa-ssp.txt
new file mode 100644
index 000000000..669b8140d
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/mrvl,pxa-ssp.txt
@@ -0,0 +1,65 @@
+Device tree bindings for Marvell PXA SSP ports
+
+Required properties:
+
+	- compatible:	Must be one of
+				mrvl,pxa25x-ssp
+				mvrl,pxa25x-nssp
+				mrvl,pxa27x-ssp
+				mrvl,pxa3xx-ssp
+				mvrl,pxa168-ssp
+				mrvl,pxa910-ssp
+				mrvl,ce4100-ssp
+				mrvl,lpss-ssp
+
+	- reg:		The memory base
+	- dmas:		Two dma phandles, one for rx, one for tx
+	- dma-names:	Must be "rx", "tx"
+
+
+Example for PXA3xx:
+
+	ssp0: ssp@41000000 {
+		compatible = "mrvl,pxa3xx-ssp";
+		reg = <0x41000000 0x40>;
+		ssp-id = <1>;
+		interrupts = <24>;
+		clock-names = "pxa27x-ssp.0";
+		dmas = <&dma 13
+			&dma 14>;
+		dma-names = "rx", "tx";
+	};
+
+	ssp1: ssp@41700000 {
+		compatible = "mrvl,pxa3xx-ssp";
+		reg = <0x41700000 0x40>;
+		ssp-id = <2>;
+		interrupts = <16>;
+		clock-names = "pxa27x-ssp.1";
+		dmas = <&dma 15
+			&dma 16>;
+		dma-names = "rx", "tx";
+	};
+
+	ssp2: ssp@41900000 {
+		compatibl3 = "mrvl,pxa3xx-ssp";
+		reg = <0x41900000 0x40>;
+		ssp-id = <3>;
+		interrupts = <0>;
+		clock-names = "pxa27x-ssp.2";
+		dmas = <&dma 66
+			&dma 67>;
+		dma-names = "rx", "tx";
+	};
+
+	ssp3: ssp@41a00000 {
+		compatible = "mrvl,pxa3xx-ssp";
+		reg = <0x41a00000 0x40>;
+		ssp-id = <4>;
+		interrupts = <13>;
+		clock-names = "pxa27x-ssp.3";
+		dmas = <&dma 2
+			&dma 3>;
+		dma-names = "rx", "tx";
+	};
+
diff --git a/kernel/Documentation/devicetree/bindings/serial/mrvl-serial.txt b/kernel/Documentation/devicetree/bindings/serial/mrvl-serial.txt
new file mode 100644
index 000000000..d744340de
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/mrvl-serial.txt
@@ -0,0 +1,4 @@
+PXA UART controller
+
+Required properties:
+- compatible : should be "mrvl,mmp-uart" or "mrvl,pxa-uart".
diff --git a/kernel/Documentation/devicetree/bindings/serial/mtk-uart.txt b/kernel/Documentation/devicetree/bindings/serial/mtk-uart.txt
new file mode 100644
index 000000000..44152261e
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/mtk-uart.txt
@@ -0,0 +1,26 @@
+* Mediatek Universal Asynchronous Receiver/Transmitter (UART)
+
+Required properties:
+- compatible should contain:
+  * "mediatek,mt8135-uart" for MT8135 compatible UARTS
+  * "mediatek,mt8127-uart" for MT8127 compatible UARTS
+  * "mediatek,mt8173-uart" for MT8173 compatible UARTS
+  * "mediatek,mt6589-uart" for MT6589 compatible UARTS
+  * "mediatek,mt6582-uart" for MT6582 compatible UARTS
+  * "mediatek,mt6577-uart" for all compatible UARTS (MT8173, MT6589, MT6582, 
+	MT6577)
+
+- reg: The base address of the UART register bank.
+
+- interrupts: A single interrupt specifier.
+
+- clocks: Clock driving the hardware.
+
+Example:
+
+	uart0: serial@11006000 {
+		compatible = "mediatek,mt6589-uart", "mediatek,mt6577-uart";
+		reg = <0x11006000 0x400>;
+		interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&uart_clk>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/nvidia,tegra20-hsuart.txt b/kernel/Documentation/devicetree/bindings/serial/nvidia,tegra20-hsuart.txt
new file mode 100644
index 000000000..845850caf
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/nvidia,tegra20-hsuart.txt
@@ -0,0 +1,37 @@
+NVIDIA Tegra20/Tegra30 high speed (DMA based) UART controller driver.
+
+Required properties:
+- compatible : should be "nvidia,tegra30-hsuart", "nvidia,tegra20-hsuart".
+- reg: Should contain UART controller registers location and length.
+- interrupts: Should contain UART controller interrupts.
+- clocks: Must contain one entry, for the module clock.
+  See ../clocks/clock-bindings.txt for details.
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+  - serial
+- dmas : Must contain an entry for each entry in clock-names.
+  See ../dma/dma.txt for details.
+- dma-names : Must include the following entries:
+  - rx
+  - tx
+
+Optional properties:
+- nvidia,enable-modem-interrupt: Enable modem interrupts. Should be enable
+		only if all 8 lines of UART controller are pinmuxed.
+
+Example:
+
+serial@70006000 {
+	compatible = "nvidia,tegra30-hsuart", "nvidia,tegra20-hsuart";
+	reg = <0x70006000 0x40>;
+	reg-shift = <2>;
+	interrupts = <0 36 0x04>;
+	nvidia,enable-modem-interrupt;
+	clocks = <&tegra_car 6>;
+	resets = <&tegra_car 6>;
+	reset-names = "serial";
+	dmas = <&apbdma 8>, <&apbdma 8>;
+	dma-names = "rx", "tx";
+	status = "disabled";
+};
diff --git a/kernel/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt b/kernel/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt
new file mode 100644
index 000000000..246c79566
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt
@@ -0,0 +1,33 @@
+* NXP SC16IS7xx advanced Universal Asynchronous Receiver-Transmitter (UART)
+
+Required properties:
+- compatible: Should be one of the following:
+  - "nxp,sc16is740" for NXP SC16IS740,
+  - "nxp,sc16is741" for NXP SC16IS741,
+  - "nxp,sc16is750" for NXP SC16IS750,
+  - "nxp,sc16is752" for NXP SC16IS752,
+  - "nxp,sc16is760" for NXP SC16IS760,
+  - "nxp,sc16is762" for NXP SC16IS762.
+- reg: I2C address of the SC16IS7xx device.
+- interrupt-parent: The phandle for the interrupt controller that
+  services interrupts for this IC.
+- interrupts: Should contain the UART interrupt
+- clocks: Reference to the IC source clock.
+
+Optional properties:
+- gpio-controller: Marks the device node as a GPIO controller.
+- #gpio-cells: Should be two. The first cell is the GPIO number and
+  the second cell is used to specify the GPIO polarity:
+    0 = active high,
+    1 = active low.
+
+Example:
+        sc16is750: sc16is750@51 {
+                compatible = "nxp,sc16is750";
+                reg = <0x51>;
+                clocks = <&clk20m>;
+                interrupt-parent = <&gpio3>;
+                interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
+                gpio-controller;
+                #gpio-cells = <2>;
+        };
diff --git a/kernel/Documentation/devicetree/bindings/serial/nxp-lpc32xx-hsuart.txt b/kernel/Documentation/devicetree/bindings/serial/nxp-lpc32xx-hsuart.txt
new file mode 100644
index 000000000..0d439dfc1
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/nxp-lpc32xx-hsuart.txt
@@ -0,0 +1,14 @@
+* NXP LPC32xx SoC High Speed UART
+
+Required properties:
+- compatible: Should be "nxp,lpc3220-hsuart"
+- reg: Should contain registers location and length
+- interrupts: Should contain interrupt
+
+Example:
+
+	uart1: serial@40014000 {
+		compatible = "nxp,lpc3220-hsuart";
+		reg = <0x40014000 0x1000>;
+		interrupts = <26 0>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/omap_serial.txt b/kernel/Documentation/devicetree/bindings/serial/omap_serial.txt
new file mode 100644
index 000000000..54c2a155c
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/omap_serial.txt
@@ -0,0 +1,30 @@
+OMAP UART controller
+
+Required properties:
+- compatible : should be "ti,omap2-uart" for OMAP2 controllers
+- compatible : should be "ti,omap3-uart" for OMAP3 controllers
+- compatible : should be "ti,omap4-uart" for OMAP4 controllers
+- reg : address and length of the register space
+- interrupts or interrupts-extended : Should contain the uart interrupt
+                                      specifier or both the interrupt
+                                      controller phandle and interrupt
+                                      specifier.
+- ti,hwmods : Must be "uart<n>", n being the instance number (1-based)
+
+Optional properties:
+- clock-frequency : frequency of the clock input to the UART
+- dmas : DMA specifier, consisting of a phandle to the DMA controller
+         node and a DMA channel number.
+- dma-names : "rx" for receive channel, "tx" for transmit channel.
+
+Example:
+
+                uart4: serial@49042000 {
+                        compatible = "ti,omap3-uart";
+                        reg = <0x49042000 0x400>;
+                        interrupts = <80>;
+                        dmas = <&sdma 81 &sdma 82>;
+                        dma-names = "tx", "rx";
+                        ti,hwmods = "uart4";
+                        clock-frequency = <48000000>;
+                };
diff --git a/kernel/Documentation/devicetree/bindings/serial/pl011.txt b/kernel/Documentation/devicetree/bindings/serial/pl011.txt
new file mode 100644
index 000000000..ba3ecb8cb
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/pl011.txt
@@ -0,0 +1,51 @@
+* ARM AMBA Primecell PL011 serial UART
+
+Required properties:
+- compatible: must be "arm,primecell", "arm,pl011"
+- reg: exactly one register range with length 0x1000
+- interrupts: exactly one interrupt specifier
+
+Optional properties:
+- pinctrl:
+	   When present, must have one state named "default",
+	   and may contain a second name named "sleep". The former
+	   state sets up pins for ordinary operation whereas
+	   the latter state will put the associated pins to sleep
+	   when the UART is unused
+- clocks:
+	   When present, the first clock listed must correspond to
+	   the clock named UARTCLK on the IP block, i.e. the clock
+	   to the external serial line, whereas the second clock
+	   must correspond to the PCLK clocking the internal logic
+	   of the block. Just listing one clock (the first one) is
+	   deprecated.
+- clocks-names:
+	   When present, the first clock listed must be named
+	   "uartclk" and the second clock listed must be named
+	   "apb_pclk"
+- dmas:	
+	   When present, may have one or two dma channels.
+	   The first one must be named "rx", the second one
+	   must be named "tx".
+- auto-poll:
+	   Enables polling when using RX DMA.
+- poll-rate-ms:
+	   Rate at which poll occurs when auto-poll is set,
+	   default 100ms.
+- poll-timeout-ms:
+	   Poll timeout when auto-poll is set, default
+	   3000ms.
+
+See also bindings/arm/primecell.txt
+
+Example:
+
+uart@80120000 {
+	compatible = "arm,pl011", "arm,primecell";
+	reg = <0x80120000 0x1000>;
+	interrupts = <0 11 IRQ_TYPE_LEVEL_HIGH>;
+	dmas = <&dma 13 0 0x2>, <&dma 13 0 0x0>;
+	dma-names = "rx", "tx";
+	clocks = <&foo_clk>, <&bar_clk>;
+	clock-names = "uartclk", "apb_pclk";
+};
diff --git a/kernel/Documentation/devicetree/bindings/serial/qca,ar9330-uart.txt b/kernel/Documentation/devicetree/bindings/serial/qca,ar9330-uart.txt
new file mode 100644
index 000000000..c5e032c85
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/qca,ar9330-uart.txt
@@ -0,0 +1,34 @@
+* Qualcomm Atheros AR9330 High-Speed UART
+
+Required properties:
+
+- compatible: Must be "qca,ar9330-uart"
+
+- reg: Specifies the physical base address of the controller and
+  the length of the memory mapped region.
+
+- interrupt-parent: The phandle for the interrupt controller that
+  services interrupts for this device.
+
+- interrupts: Specifies the interrupt source of the parent interrupt
+  controller. The format of the interrupt specifier depends on the
+  parent interrupt controller.
+
+Additional requirements:
+
+  Each UART port must have an alias correctly numbered in "aliases"
+  node.
+
+Example:
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	uart0: uart@18020000 {
+		compatible = "qca,ar9330-uart";
+		reg = <0x18020000 0x14>;
+
+		interrupt-parent = <&intc>;
+		interrupts = <3>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/qcom,msm-uart.txt b/kernel/Documentation/devicetree/bindings/serial/qcom,msm-uart.txt
new file mode 100644
index 000000000..ce8c90161
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/qcom,msm-uart.txt
@@ -0,0 +1,25 @@
+* MSM Serial UART
+
+The MSM serial UART hardware is designed for low-speed use cases where a
+dma-engine isn't needed. From a software perspective it's mostly compatible
+with the MSM serial UARTDM except that it only supports reading and writing one
+character at a time.
+
+Required properties:
+- compatible: Should contain "qcom,msm-uart"
+- reg: Should contain UART register location and length.
+- interrupts: Should contain UART interrupt.
+- clocks: Should contain the core clock.
+- clock-names: Should be "core".
+
+Example:
+
+A uart device at 0xa9c00000 with interrupt 11.
+
+serial@a9c00000 {
+	compatible = "qcom,msm-uart";
+	reg = <0xa9c00000 0x1000>;
+	interrupts = <11>;
+	clocks = <&uart_cxc>;
+	clock-names = "core";
+};
diff --git a/kernel/Documentation/devicetree/bindings/serial/qcom,msm-uartdm.txt b/kernel/Documentation/devicetree/bindings/serial/qcom,msm-uartdm.txt
new file mode 100644
index 000000000..a2114c217
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/qcom,msm-uartdm.txt
@@ -0,0 +1,78 @@
+* MSM Serial UARTDM
+
+The MSM serial UARTDM hardware is designed for high-speed use cases where the
+transmit and/or receive channels can be offloaded to a dma-engine. From a
+software perspective it's mostly compatible with the MSM serial UART except
+that it supports reading and writing multiple characters at a time.
+
+Required properties:
+- compatible: Should contain at least "qcom,msm-uartdm".
+              A more specific property should be specified as follows depending
+	      on the version:
+		"qcom,msm-uartdm-v1.1"
+		"qcom,msm-uartdm-v1.2"
+		"qcom,msm-uartdm-v1.3"
+		"qcom,msm-uartdm-v1.4"
+- reg: Should contain UART register locations and lengths. The first
+       register shall specify the main control registers. An optional second
+       register location shall specify the GSBI control region.
+       "qcom,msm-uartdm-v1.3" is the only compatible value that might
+       need the GSBI control region.
+- interrupts: Should contain UART interrupt.
+- clocks: Should contain the core clock and the AHB clock.
+- clock-names: Should be "core" for the core clock and "iface" for the
+	       AHB clock.
+
+Optional properties:
+- dmas: Should contain dma specifiers for transmit and receive channels
+- dma-names: Should contain "tx" for transmit and "rx" for receive channels
+
+Note: Aliases may be defined to ensure the correct ordering of the UARTs.
+The alias serialN will result in the UART being assigned port N.  If any
+serialN alias exists, then an alias must exist for each enabled UART.  The
+serialN aliases should be in a .dts file instead of in a .dtsi file.
+
+Examples:
+
+- A uartdm v1.4 device with dma capabilities.
+
+	serial@f991e000 {
+		compatible = "qcom,msm-uartdm-v1.4", "qcom,msm-uartdm";
+		reg = <0xf991e000 0x1000>;
+		interrupts = <0 108 0x0>;
+		clocks = <&blsp1_uart2_apps_cxc>, <&blsp1_ahb_cxc>;
+		clock-names = "core", "iface";
+		dmas = <&dma0 0>, <&dma0 1>;
+		dma-names = "tx", "rx";
+	};
+
+- A uartdm v1.3 device without dma capabilities and part of a GSBI complex.
+
+	serial@19c40000 {
+		compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
+		reg = <0x19c40000 0x1000>,
+		<0x19c00000 0x1000>;
+		interrupts = <0 195 0x0>;
+		clocks = <&gsbi5_uart_cxc>, <&gsbi5_ahb_cxc>;
+		clock-names = "core", "iface";
+	};
+
+- serialN alias.
+
+	aliases {
+		serial0 = &uarta;
+		serial1 = &uartc;
+		serial2 = &uartb;
+	};
+
+	uarta: serial@12490000 {
+		status = "ok";
+	};
+
+	uartb: serial@16340000 {
+		status = "ok";
+	};
+
+	uartc: serial@1a240000 {
+		status = "ok";
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt b/kernel/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
new file mode 100644
index 000000000..ae73bb0e9
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
@@ -0,0 +1,59 @@
+* Renesas SH-Mobile Serial Communication Interface
+
+Required properties:
+
+  - compatible: Must contain one of the following:
+
+    - "renesas,scif-r7s72100" for R7S72100 (RZ/A1H) SCIF compatible UART.
+    - "renesas,scifa-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFA compatible UART.
+    - "renesas,scifb-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFB compatible UART.
+    - "renesas,scifa-r8a7740" for R8A7740 (R-Mobile A1) SCIFA compatible UART.
+    - "renesas,scifb-r8a7740" for R8A7740 (R-Mobile A1) SCIFB compatible UART.
+    - "renesas,scif-r8a7778" for R8A7778 (R-Car M1) SCIF compatible UART.
+    - "renesas,scif-r8a7779" for R8A7779 (R-Car H1) SCIF compatible UART.
+    - "renesas,scif-r8a7790" for R8A7790 (R-Car H2) SCIF compatible UART.
+    - "renesas,scifa-r8a7790" for R8A7790 (R-Car H2) SCIFA compatible UART.
+    - "renesas,scifb-r8a7790" for R8A7790 (R-Car H2) SCIFB compatible UART.
+    - "renesas,hscif-r8a7790" for R8A7790 (R-Car H2) HSCIF compatible UART.
+    - "renesas,scif-r8a7791" for R8A7791 (R-Car M2) SCIF compatible UART.
+    - "renesas,scifa-r8a7791" for R8A7791 (R-Car M2) SCIFA compatible UART.
+    - "renesas,scifb-r8a7791" for R8A7791 (R-Car M2) SCIFB compatible UART.
+    - "renesas,hscif-r8a7791" for R8A7791 (R-Car M2) HSCIF compatible UART.
+    - "renesas,scif-r8a7794" for R8A7794 (R-Car E2) SCIF compatible UART.
+    - "renesas,scifa-r8a7794" for R8A7794 (R-Car E2) SCIFA compatible UART.
+    - "renesas,scifb-r8a7794" for R8A7794 (R-Car E2) SCIFB compatible UART.
+    - "renesas,hscif-r8a7794" for R8A7794 (R-Car E2) HSCIF compatible UART.
+    - "renesas,scifa-sh73a0" for SH73A0 (SH-Mobile AG5) SCIFA compatible UART.
+    - "renesas,scifb-sh73a0" for SH73A0 (SH-Mobile AG5) SCIFB compatible UART.
+    - "renesas,scif" for generic SCIF compatible UART.
+    - "renesas,scifa" for generic SCIFA compatible UART.
+    - "renesas,scifb" for generic SCIFB compatible UART.
+    - "renesas,hscif" for generic HSCIF compatible UART.
+
+    When compatible with the generic version, nodes must list the
+    SoC-specific version corresponding to the platform first followed by the
+    generic version.
+
+  - reg: Base address and length of the I/O registers used by the UART.
+  - interrupts: Must contain an interrupt-specifier for the SCIx interrupt.
+
+  - clocks: Must contain a phandle and clock-specifier pair for each entry
+    in clock-names.
+  - clock-names: Must contain "sci_ick" for the SCIx UART interface clock.
+
+Note: Each enabled SCIx UART should have an alias correctly numbered in the
+"aliases" node.
+
+Example:
+	aliases {
+		serial0 = &scifa0;
+	};
+
+	scifa0: serial@e6c40000 {
+		compatible = "renesas,scifa-r8a7790", "renesas,scifa";
+		reg = <0 0xe6c40000 0 64>;
+		interrupt-parent = <&gic>;
+		interrupts = <0 144 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&mstp2_clks R8A7790_CLK_SCIFA0>;
+		clock-names = "sci_ick";
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/rs485.txt b/kernel/Documentation/devicetree/bindings/serial/rs485.txt
new file mode 100644
index 000000000..32b1fa1f2
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/rs485.txt
@@ -0,0 +1,31 @@
+* RS485 serial communications
+
+The RTS signal is capable of automatically controlling line direction for
+the built-in half-duplex mode.
+The properties described hereafter shall be given to a half-duplex capable
+UART node.
+
+Required properties:
+- rs485-rts-delay: prop-encoded-array <a b> where:
+  * a is the delay between rts signal and beginning of data sent in milliseconds.
+      it corresponds to the delay before sending data.
+  * b is the delay between end of data sent and rts signal in milliseconds
+      it corresponds to the delay after sending data and actual release of the line.
+
+Optional properties:
+- linux,rs485-enabled-at-boot-time: empty property telling to enable the rs485
+  feature at boot time. It can be disabled later with proper ioctl.
+- rs485-rx-during-tx: empty property that enables the receiving of data even
+  whilst sending data.
+
+RS485 example for Atmel USART:
+	usart0: serial@fff8c000 {
+		compatible = "atmel,at91sam9260-usart";
+		reg = <0xfff8c000 0x4000>;
+		interrupts = <7>;
+		atmel,use-dma-rx;
+		atmel,use-dma-tx;
+		linux,rs485-enabled-at-boot-time;
+		rs485-rts-delay = <0 200>;		// in milliseconds
+	};
+
diff --git a/kernel/Documentation/devicetree/bindings/serial/samsung_uart.txt b/kernel/Documentation/devicetree/bindings/serial/samsung_uart.txt
new file mode 100644
index 000000000..e85f37ec3
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/samsung_uart.txt
@@ -0,0 +1,58 @@
+* Samsung's UART Controller
+
+The Samsung's UART controller is used for interfacing SoC with serial
+communicaion devices.
+
+Required properties:
+- compatible: should be one of following:
+  - "samsung,exynos4210-uart" -  Exynos4210 SoC,
+  - "samsung,s3c2410-uart" - compatible with ports present on S3C2410 SoC,
+  - "samsung,s3c2412-uart" - compatible with ports present on S3C2412 SoC,
+  - "samsung,s3c2440-uart" - compatible with ports present on S3C2440 SoC,
+  - "samsung,s3c6400-uart" - compatible with ports present on S3C6400 SoC,
+  - "samsung,s5pv210-uart" - compatible with ports present on S5PV210 SoC.
+
+- reg: base physical address of the controller and length of memory mapped
+  region.
+
+- interrupts: a single interrupt signal to SoC interrupt controller,
+  according to interrupt bindings documentation [1].
+
+- clock-names: input names of clocks used by the controller:
+  - "uart" - controller bus clock,
+  - "clk_uart_baudN" - Nth baud base clock input (N = 0, 1, ...),
+    according to SoC User's Manual (only N = 0 is allowedfor SoCs without
+    internal baud clock mux).
+- clocks: phandles and specifiers for all clocks specified in "clock-names"
+  property, in the same order, according to clock bindings documentation [2].
+
+[1] Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
+[2] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Optional properties:
+- samsung,uart-fifosize: The fifo size supported by the UART channel
+
+Note: Each Samsung UART should have an alias correctly numbered in the
+"aliases" node, according to serialN format, where N is the port number
+(non-negative decimal integer) as specified by User's Manual of respective
+SoC.
+
+Example:
+	aliases {
+		serial0 = &uart0;
+		serial1 = &uart1;
+		serial2 = &uart2;
+	};
+
+Example:
+	uart1: serial@7f005400 {
+		compatible = "samsung,s3c6400-uart";
+		reg = <0x7f005400 0x100>;
+		interrupt-parent = <&vic1>;
+		interrupts = <6>;
+		clock-names = "uart", "clk_uart_baud2",
+				"clk_uart_baud3";
+		clocks = <&clocks PCLK_UART1>, <&clocks PCLK_UART1>,
+				<&clocks SCLK_UART>;
+		samsung,uart-fifosize = <16>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/sirf-uart.txt b/kernel/Documentation/devicetree/bindings/serial/sirf-uart.txt
new file mode 100644
index 000000000..f0c39261c
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/sirf-uart.txt
@@ -0,0 +1,47 @@
+* CSR SiRFprimaII/atlasVI Universal Synchronous Asynchronous Receiver/Transmitter *
+
+Required properties:
+- compatible : Should be "sirf,prima2-uart", "sirf, prima2-usp-uart",
+		"sirf,atlas7-uart" or "sirf,atlas7-bt-uart" which means
+		uart located in BT module and used for BT.
+- reg : Offset and length of the register set for the device
+- interrupts : Should contain uart interrupt
+- fifosize : Should define hardware rx/tx fifo size
+- clocks : Should contain uart clock number
+
+Optional properties:
+- sirf,uart-has-rtscts: we have hardware flow controller pins in hardware
+- rts-gpios: RTS pin for USP-based UART if sirf,uart-has-rtscts is true
+- cts-gpios: CTS pin for USP-based UART if sirf,uart-has-rtscts is true
+
+Example:
+
+uart0: uart@b0050000 {
+	cell-index = <0>;
+	compatible = "sirf,prima2-uart";
+	reg = <0xb0050000 0x1000>;
+	interrupts = <17>;
+	fifosize = <128>;
+	clocks = <&clks 13>;
+};
+
+On the board-specific dts, we can put rts-gpios and cts-gpios like
+
+usp@b0090000 {
+	compatible = "sirf,prima2-usp-uart";
+	sirf,uart-has-rtscts;
+	rts-gpios = <&gpio 15 0>;
+	cts-gpios = <&gpio 46 0>;
+};
+
+for uart use in BT module,
+uart6: uart@11000000 {
+	cell-index = <6>;
+	compatible = "sirf,atlas7-bt-uart", "sirf,atlas7-uart";
+	reg = <0x11000000 0x1000>;
+	interrupts = <0 100 0>;
+	clocks = <&clks 138>, <&clks 140>, <&clks 141>;
+	clock-names = "uart", "general", "noc";
+	fifosize = <128>;
+	status = "disabled";
+}
diff --git a/kernel/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt b/kernel/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt
new file mode 100644
index 000000000..289c40ed7
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt
@@ -0,0 +1,73 @@
+* Synopsys DesignWare ABP UART
+
+Required properties:
+- compatible : "snps,dw-apb-uart"
+- reg : offset and length of the register set for the device.
+- interrupts : should contain uart interrupt.
+
+Clock handling:
+The clock rate of the input clock needs to be supplied by one of
+- clock-frequency : the input clock frequency for the UART.
+- clocks : phandle to the input clock
+
+The supplying peripheral clock can also be handled, needing a second property
+- clock-names: tuple listing input clock names.
+	Required elements: "baudclk", "apb_pclk"
+
+Optional properties:
+- resets : phandle to the parent reset controller.
+- reg-shift : quantity to shift the register offsets by.  If this property is
+  not present then the register offsets are not shifted.
+- reg-io-width : the size (in bytes) of the IO accesses that should be
+  performed on the device.  If this property is not present then single byte
+  accesses are used.
+- dcd-override : Override the DCD modem status signal. This signal will always
+  be reported as active instead of being obtained from the modem status
+  register. Define this if your serial port does not use this pin.
+- dsr-override : Override the DTS modem status signal. This signal will always
+  be reported as active instead of being obtained from the modem status
+  register. Define this if your serial port does not use this pin.
+- cts-override : Override the CTS modem status signal. This signal will always
+  be reported as active instead of being obtained from the modem status
+  register. Define this if your serial port does not use this pin.
+- ri-override : Override the RI modem status signal. This signal will always be
+  reported as inactive instead of being obtained from the modem status register.
+  Define this if your serial port does not use this pin.
+
+Example:
+
+	uart@80230000 {
+		compatible = "snps,dw-apb-uart";
+		reg = <0x80230000 0x100>;
+		clock-frequency = <3686400>;
+		interrupts = <10>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		dcd-override;
+		dsr-override;
+		cts-override;
+		ri-override;
+	};
+
+Example with one clock:
+
+	uart@80230000 {
+		compatible = "snps,dw-apb-uart";
+		reg = <0x80230000 0x100>;
+		clocks = <&baudclk>;
+		interrupts = <10>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+	};
+
+Example with two clocks:
+
+	uart@80230000 {
+		compatible = "snps,dw-apb-uart";
+		reg = <0x80230000 0x100>;
+		clocks = <&baudclk>, <&apb_pclk>;
+		clock-names = "baudclk", "apb_pclk";
+		interrupts = <10>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/serial/sprd-uart.txt b/kernel/Documentation/devicetree/bindings/serial/sprd-uart.txt
new file mode 100644
index 000000000..2aff0f22c
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/sprd-uart.txt
@@ -0,0 +1,7 @@
+* Spreadtrum serial UART
+
+Required properties:
+- compatible: must be "sprd,sc9836-uart"
+- reg: offset and length of the register set for the device
+- interrupts: exactly one interrupt specifier
+- clocks: phandles to input clocks.
diff --git a/kernel/Documentation/devicetree/bindings/serial/st-asc.txt b/kernel/Documentation/devicetree/bindings/serial/st-asc.txt
new file mode 100644
index 000000000..75d877f59
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/st-asc.txt
@@ -0,0 +1,18 @@
+*st-asc(Serial Port)
+
+Required properties:
+- compatible : Should be "st,asc".
+- reg, reg-names, interrupts, interrupt-names	: Standard way to define device
+			resources with names. look in
+			Documentation/devicetree/bindings/resource-names.txt
+
+Optional properties:
+- st,hw-flow-ctrl	bool flag to enable hardware flow control.
+- st,force-m1		bool flat to force asc to be in Mode-1 recommeded
+			for high bit rates (above 19.2K)
+Example:
+serial@fe440000{
+    compatible    = "st,asc";
+    reg         = <0xfe440000 0x2c>;
+    interrupts     =  <0 209 0>;
+};
diff --git a/kernel/Documentation/devicetree/bindings/serial/vt8500-uart.txt b/kernel/Documentation/devicetree/bindings/serial/vt8500-uart.txt
new file mode 100644
index 000000000..2b64e6107
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/vt8500-uart.txt
@@ -0,0 +1,27 @@
+* VIA VT8500 and WonderMedia WM8xxx UART Controller
+
+Required properties:
+- compatible: should be "via,vt8500-uart" (for VIA/WonderMedia chips up to and
+	including WM8850/WM8950), or "wm,wm8880-uart" (for WM8880 and later)
+
+- reg: base physical address of the controller and length of memory mapped
+	region.
+
+- interrupts: hardware interrupt number
+
+- clocks: shall be the input parent clock phandle for the clock. This should
+	be the 24Mhz reference clock.
+
+Aliases may be defined to ensure the correct ordering of the uarts.
+
+Example:
+	aliases {
+		serial0 = &uart0;
+	};
+
+	uart0: serial@d8200000 {
+		compatible = "via,vt8500-uart";
+		reg = <0xd8200000 0x1040>;
+		interrupts = <32>;
+		clocks = <&clkuart0>;
+	};