1OpenRISC 1000 Programmable Interrupt Controller
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3Required properties:
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5- compatible : should be "opencores,or1k-pic-level" for variants with
6  level triggered interrupt lines, "opencores,or1k-pic-edge" for variants with
7  edge triggered interrupt lines or "opencores,or1200-pic" for machines
8  with the non-spec compliant or1200 type implementation.
9
10  "opencores,or1k-pic" is also provided as an alias to "opencores,or1200-pic",
11  but this is only for backwards compatibility.
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13- interrupt-controller : Identifies the node as an interrupt controller
14- #interrupt-cells : Specifies the number of cells needed to encode an
15  interrupt source. The value shall be 1.
16
17Example:
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19intc: interrupt-controller {
20	compatible = "opencores,or1k-pic-level";
21	interrupt-controller;
22	#interrupt-cells = <1>;
23};
24