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, 24 insertions, 0 deletions

diff --git a/kernel/Documentation/devicetree/bindings/spi/spi-dw.txt b/kernel/Documentation/devicetree/bindings/spi/spi-dw.txt
new file mode 100644
index 000000000..7b63ed601
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/spi/spi-dw.txt
@@ -0,0 +1,24 @@
+Synopsys DesignWare SPI master
+
+Required properties:
+- compatible: should be "snps,designware-spi"
+- #address-cells: see spi-bus.txt
+- #size-cells: see spi-bus.txt
+- reg: address and length of the spi master registers
+- interrupts: should contain one interrupt
+- clocks: spi clock phandle
+- num-cs: see spi-bus.txt
+
+Optional properties:
+- cs-gpios: see spi-bus.txt
+
+Example:
+
+spi: spi@4020a000 {
+	compatible = "snps,designware-spi";
+	interrupts = <11 1>;
+	reg = <0x4020a000 0x1000>;
+	clocks = <&pclk>;
+	num-cs = <2>;
+	cs-gpios = <&banka 0 0>;
+};