Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / mfd / bfticu.txt

diff --git a/kernel/Documentation/devicetree/bindings/mfd/bfticu.txt b/kernel/Documentation/devicetree/bindings/mfd/bfticu.txt
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+KEYMILE bfticu Chassis Management FPGA
+
+The bfticu is a multifunction device that manages the whole chassis.
+Its main functionality is to collect IRQs from the whole chassis and signals
+them to a single controller.
+
+Required properties:
+- compatible: "keymile,bfticu"
+- interrupt-controller: the bfticu FPGA is an interrupt controller
+- interrupts: the main IRQ line to signal the collected IRQs
+- #interrupt-cells : is 2 and their usage is compliant to the 2 cells variant
+  of Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
+- interrupt-parent: the parent IRQ ctrl the main IRQ is connected to
+- reg: access on the parent local bus (chip select, offset in chip select, size)
+
+Example:
+
+       chassis-mgmt@3,0 {
+               compatible = "keymile,bfticu";
+               interrupt-controller;
+               #interrupt-cells = <2>;
+               reg = <3 0 0x100>;
+               interrupt-parent = <&mpic>;
+               interrupts = <6 1 0 0>;
+       };