linux/Documentation/devicetree/bindings/interrupt-controller/renesas,intc-irqpin.txt
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   1DT bindings for the R-/SH-Mobile irqpin controller
   2
   3Required properties:
   4
   5- compatible: has to be "renesas,intc-irqpin"
   6- #interrupt-cells: has to be <2>: an interrupt index and flags, as defined in
   7  interrupts.txt in this directory
   8
   9Optional properties:
  10
  11- any properties, listed in interrupts.txt, and any standard resource allocation
  12  properties
  13- sense-bitfield-width: width of a single sense bitfield in the SENSE register,
  14  if different from the default 4 bits
  15- control-parent: disable and enable interrupts on the parent interrupt
  16  controller, needed for some broken implementations
  17