1OpenRISC 1000 Programmable Interrupt Controller 2 3Required properties: 4 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. 12 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: 18 19intc: interrupt-controller { 20 compatible = "opencores,or1k-pic-level"; 21 interrupt-controller; 22 #interrupt-cells = <1>; 23}; 24