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, 28 insertions, 0 deletions

diff --git a/kernel/Documentation/devicetree/bindings/clock/imx21-clock.txt b/kernel/Documentation/devicetree/bindings/clock/imx21-clock.txt
new file mode 100644
index 000000000..c3b0db437
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/clock/imx21-clock.txt
@@ -0,0 +1,28 @@
+* Clock bindings for Freescale i.MX21
+
+Required properties:
+- compatible  : Should be "fsl,imx21-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. See include/dt-bindings/clock/imx21-clock.h
+for the full list of i.MX21 clock IDs.
+
+Examples:
+	clks: ccm@10027000{
+		compatible = "fsl,imx21-ccm";
+		reg = <0x10027000 0x800>;
+		#clock-cells = <1>;
+	};
+
+	uart1: serial@1000a000 {
+		compatible = "fsl,imx21-uart";
+		reg = <0x1000a000 0x1000>;
+		interrupts = <20>;
+		clocks = <&clks IMX21_CLK_UART1_IPG_GATE>,
+			 <&clks IMX21_CLK_PER1>;
+		clock-names = "ipg", "per";
+		status = "disabled";
+	};