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>

1 files changed, 80 insertions, 0 deletions

diff --git a/kernel/Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt b/kernel/Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt
new file mode 100644
index 000000000..2c1186622
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt
@@ -0,0 +1,80 @@
+Abilis Systems TB10x pin controller
+===================================
+
+Required properties
+-------------------
+
+- compatible: should be "abilis,tb10x-iomux";
+- reg: should contain the physical address and size of the pin controller's
+  register range.
+
+
+Function definitions
+--------------------
+
+Functions are defined (and referenced) by sub-nodes of the pin controller.
+Every sub-node defines exactly one function (implying a set of pins).
+Every function is associated to one named pin group inside the pin controller
+driver and these names are used to associate pin group predefinitions to pin
+controller sub-nodes.
+
+Required function definition subnode properties:
+  - abilis,function: should be set to the name of the function's pin group.
+
+The following pin groups are available:
+  - GPIO ports: gpioa, gpiob, gpioc, gpiod, gpioe, gpiof, gpiog,
+                gpioh, gpioi, gpioj, gpiok, gpiol, gpiom, gpion
+  - Serial TS input ports: mis0, mis1, mis2, mis3, mis4, mis5, mis6, mis7
+  - Parallel TS input ports: mip1, mip3, mip5, mip7
+  - Serial TS output ports: mos0, mos1, mos2, mos3
+  - Parallel TS output port: mop
+  - CI+ port: ciplus
+  - CableCard (Mcard) port: mcard
+  - Smart card ports: stc0, stc1
+  - UART ports: uart0, uart1
+  - SPI ports: spi1, spi3
+  - JTAG: jtag
+
+All other ports of the chip are not multiplexed and thus not managed by this
+driver.
+
+
+GPIO ranges definition
+----------------------
+
+The named pin groups of GPIO ports can be used to define GPIO ranges as
+explained in Documentation/devicetree/bindings/gpio/gpio.txt.
+
+
+Example
+-------
+
+iomux: iomux@FF10601c {
+	compatible = "abilis,tb10x-iomux";
+	reg = <0xFF10601c 0x4>;
+	pctl_gpio_a: pctl-gpio-a {
+		abilis,function = "gpioa";
+	};
+	pctl_uart0: pctl-uart0 {
+		abilis,function = "uart0";
+	};
+};
+uart@FF100000 {
+	compatible = "snps,dw-apb-uart";
+	reg = <0xFF100000 0x100>;
+	clock-frequency = <166666666>;
+	interrupts = <25 1>;
+	reg-shift = <2>;
+	reg-io-width = <4>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pctl_uart0>;
+};
+gpioa: gpio@FF140000 {
+	compatible = "abilis,tb10x-gpio";
+	reg = <0xFF140000 0x1000>;
+	gpio-controller;
+	#gpio-cells = <2>;
+	ngpio = <3>;
+	gpio-ranges = <&iomux 0 0>;
+	gpio-ranges-group-names = "gpioa";
+};