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, 74 insertions, 0 deletions

diff --git a/kernel/Documentation/devicetree/bindings/clock/vt8500.txt b/kernel/Documentation/devicetree/bindings/clock/vt8500.txt
new file mode 100644
index 000000000..91d71cc03
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/clock/vt8500.txt
@@ -0,0 +1,74 @@
+Device Tree Clock bindings for arch-vt8500
+
+This binding uses the common clock binding[1].
+
+[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Required properties:
+- compatible : shall be one of the following:
+	"via,vt8500-pll-clock" - for a VT8500/WM8505 PLL clock
+	"wm,wm8650-pll-clock" - for a WM8650 PLL clock
+	"wm,wm8750-pll-clock" - for a WM8750 PLL clock
+	"wm,wm8850-pll-clock" - for a WM8850 PLL clock
+	"via,vt8500-device-clock" - for a VT/WM device clock
+
+Required properties for PLL clocks:
+- reg : shall be the control register offset from PMC base for the pll clock.
+- clocks : shall be the input parent clock phandle for the clock. This should
+	be the reference clock.
+- #clock-cells : from common clock binding; shall be set to 0.
+
+Required properties for device clocks:
+- clocks : shall be the input parent clock phandle for the clock. This should
+	be a pll output.
+- #clock-cells : from common clock binding; shall be set to 0.
+
+
+Device Clocks
+
+Device clocks are required to have one or both of the following sets of
+properties:
+
+
+Gated device clocks:
+
+Required properties:
+- enable-reg : shall be the register offset from PMC base for the enable
+	register.
+- enable-bit : shall be the bit within enable-reg to enable/disable the clock.
+
+
+Divisor device clocks:
+
+Required property:
+- divisor-reg : shall be the register offset from PMC base for the divisor
+	register.
+Optional property:
+- divisor-mask : shall be the mask for the divisor register. Defaults to 0x1f
+	if not specified.
+
+
+For example:
+
+ref25: ref25M {
+	#clock-cells = <0>;
+	compatible = "fixed-clock";
+	clock-frequency = <25000000>;
+};
+
+plla: plla {
+	#clock-cells = <0>;
+	compatible = "wm,wm8650-pll-clock";
+	clocks = <&ref25>;
+	reg = <0x200>;
+};
+
+sdhc: sdhc {
+	#clock-cells = <0>;
+	compatible = "via,vt8500-device-clock";
+	clocks = <&pllb>;
+	divisor-reg = <0x328>;
+	divisor-mask = <0x3f>;
+	enable-reg = <0x254>;
+	enable-bit = <18>;
+};