FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/interrupt-controller/opencores,or1k-pic.txt

     OpenRISC 1000 Programmable Interrupt Controller
     
     Required properties:
     
     - compatible : should be "opencores,or1k-pic-level" for variants with
       level triggered interrupt lines, "opencores,or1k-pic-edge" for variants with
       edge triggered interrupt lines or "opencores,or1200-pic" for machines
       with the non-spec compliant or1200 type implementation.
     
      "opencores,or1k-pic" is also provided as an alias to "opencores,or1200-pic",
      but this is only for backwards compatibility.
    
    - interrupt-controller : Identifies the node as an interrupt controller
    - #interrupt-cells : Specifies the number of cells needed to encode an
      interrupt source. The value shall be 1.
    
    Example:
    
    intc: interrupt-controller {
            compatible = "opencores,or1k-pic-level";
            interrupt-controller;
            #interrupt-cells = <1>;
    };

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