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, 63 insertions, 0 deletions

diff --git a/kernel/Documentation/devicetree/bindings/pci/pci-keystone.txt b/kernel/Documentation/devicetree/bindings/pci/pci-keystone.txt
new file mode 100644
index 000000000..54eae2938
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/pci/pci-keystone.txt
@@ -0,0 +1,63 @@
+TI Keystone PCIe interface
+
+Keystone PCI host Controller is based on Designware PCI h/w version 3.65.
+It shares common functions with PCIe Designware core driver and inherit
+common properties defined in
+Documentation/devicetree/bindings/pci/designware-pci.txt
+
+Please refer to Documentation/devicetree/bindings/pci/designware-pci.txt
+for the details of Designware DT bindings.  Additional properties are
+described here as well as properties that are not applicable.
+
+Required Properties:-
+
+compatibility: "ti,keystone-pcie"
+reg:	index 1 is the base address and length of DW application registers.
+	index 2 is the base address and length of PCI device ID register.
+
+pcie_msi_intc : Interrupt controller device node for MSI IRQ chip
+	interrupt-cells: should be set to 1
+	interrupt-parent: Parent interrupt controller phandle
+	interrupts: GIC interrupt lines connected to PCI MSI interrupt lines
+
+ Example:
+	pcie_msi_intc: msi-interrupt-controller {
+			interrupt-controller;
+			#interrupt-cells = <1>;
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SPI 30 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 31 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 32 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 33 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 34 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 35 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 36 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 37 IRQ_TYPE_EDGE_RISING>;
+	};
+
+pcie_intc: Interrupt controller device node for Legacy IRQ chip
+	interrupt-cells: should be set to 1
+	interrupt-parent: Parent interrupt controller phandle
+	interrupts: GIC interrupt lines connected to PCI Legacy interrupt lines
+
+ Example:
+	pcie_intc: legacy-interrupt-controller {
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_SPI 26 IRQ_TYPE_EDGE_RISING>,
+			<GIC_SPI 27 IRQ_TYPE_EDGE_RISING>,
+			<GIC_SPI 28 IRQ_TYPE_EDGE_RISING>,
+			<GIC_SPI 29 IRQ_TYPE_EDGE_RISING>;
+	};
+
+Optional properties:-
+	phys: phandle to Generic Keystone SerDes phy for PCI
+	phy-names: name of the Generic Keystine SerDes phy for PCI
+	  - If boot loader already does PCI link establishment, then phys and
+	    phy-names shouldn't be present.
+
+Designware DT Properties not applicable for Keystone PCI
+
+1. pcie_bus clock-names not used.  Instead, a phandle to phys is used.
+