- reg: specifies the base physical address and size of the registers- interrupt-controller: identifies the node as an interrupt controller- #interrupt-cells: specifies the number of cells needed to encode an interrupt source. Should be 1.- interrupt-parent: specifies the phandle to the parent interrupt controller this controller is cacaded from- interrupts: specifies the interrupt line in the interrupt-parent irq space to be used for cascadingOptional properties:- brcm,irq-can-wake: If present, this means the L2 controller can be used as a wakeup source for system suspend/resume.Example:hif_intr2_intc: interrupt-controller@f0441000 { compatible = "brcm,l2-intc"; reg = <0xf0441000 0x30>; interrupt-controller; #interrupt-cells = <1>; interrupt-parent = <&intc>; interrupts = <0x0 0x20 0x0>;};