Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / arm / vic.txt

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+* ARM Vectored Interrupt Controller
+
+One or more Vectored Interrupt Controllers (VIC's) can be connected in an ARM
+system for interrupt routing.  For multiple controllers they can either be
+nested or have the outputs wire-OR'd together.
+
+Required properties:
+
+- compatible : should be one of
+       "arm,pl190-vic"
+       "arm,pl192-vic"
+- interrupt-controller : Identifies the node as an interrupt controller
+- #interrupt-cells : The number of cells to define the interrupts.  Must be 1 as
+  the VIC has no configuration options for interrupt sources.  The cell is a u32
+  and defines the interrupt number.
+- reg : The register bank for the VIC.
+
+Optional properties:
+
+- interrupts : Interrupt source for parent controllers if the VIC is nested.
+- valid-mask : A one cell big bit mask of valid interrupt sources. Each bit
+  represents single interrupt source, starting from source 0 at LSb and ending
+  at source 31 at MSb. A bit that is set means that the source is wired and
+  clear means otherwise. If unspecified, defaults to all valid.
+- valid-wakeup-mask : A one cell big bit mask of interrupt sources that can be
+  configured as wake up source for the system. Order of bits is the same as for
+  valid-mask property. A set bit means that this interrupt source can be
+  configured as a wake up source for the system. If unspecied, defaults to all
+  interrupt sources configurable as wake up sources.
+
+Example:
+
+       vic0: interrupt-controller@60000 {
+               compatible = "arm,pl192-vic";
+               interrupt-controller;
+               #interrupt-cells = <1>;
+               reg = <0x60000 0x1000>;
+
+               valid-mask = <0xffffff7f>;
+               valid-wakeup-mask = <0x0000ff7f>;
+       };