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, 67 insertions, 0 deletions

diff --git a/kernel/Documentation/devicetree/bindings/sound/tlv320aic3x.txt b/kernel/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
new file mode 100644
index 000000000..47a213c41
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
@@ -0,0 +1,67 @@
+Texas Instruments - tlv320aic3x Codec module
+
+The tlv320aic3x serial control bus communicates through I2C protocols
+
+Required properties:
+
+- compatible - "string" - One of:
+    "ti,tlv320aic3x" - Generic TLV320AIC3x device
+    "ti,tlv320aic33" - TLV320AIC33
+    "ti,tlv320aic3007" - TLV320AIC3007
+    "ti,tlv320aic3106" - TLV320AIC3106
+    "ti,tlv320aic3104" - TLV320AIC3104
+
+
+- reg - <int> -  I2C slave address
+
+
+Optional properties:
+
+- gpio-reset - gpio pin number used for codec reset
+- ai3x-gpio-func - <array of 2 int> - AIC3X_GPIO1 & AIC3X_GPIO2 Functionality
+				    - Not supported on tlv320aic3104
+- ai3x-micbias-vg - MicBias Voltage required.
+	1 - MICBIAS output is powered to 2.0V,
+	2 - MICBIAS output is powered to 2.5V,
+	3 - MICBIAS output is connected to AVDD,
+	If this node is not mentioned or if the value is incorrect, then MicBias
+	is powered down.
+- AVDD-supply, IOVDD-supply, DRVDD-supply, DVDD-supply : power supplies for the
+  device as covered in Documentation/devicetree/bindings/regulator/regulator.txt
+
+CODEC output pins:
+  * LLOUT
+  * RLOUT
+  * MONO_LOUT
+  * HPLOUT
+  * HPROUT
+  * HPLCOM
+  * HPRCOM
+
+CODEC input pins for TLV320AIC3104:
+  * MIC2L
+  * MIC2R
+  * LINE1L
+  * LINE1R
+
+CODEC input pins for other compatible codecs:
+  * MIC3L
+  * MIC3R
+  * LINE1L
+  * LINE2L
+  * LINE1R
+  * LINE2R
+
+The pins can be used in referring sound node's audio-routing property.
+
+Example:
+
+tlv320aic3x: tlv320aic3x@1b {
+	compatible = "ti,tlv320aic3x";
+	reg = <0x1b>;
+
+	AVDD-supply = <&regulator>;
+	IOVDD-supply = <&regulator>;
+	DRVDD-supply = <&regulator>;
+	DVDD-supply = <&regulator>;
+};