linux/Documentation/devicetree/bindings/arm/spear-timer.txt
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   1* SPEAr ARM Timer
   2
   3** Timer node required properties:
   4
   5- compatible : Should be:
   6        "st,spear-timer"
   7- reg: Address range of the timer registers
   8- interrupt-parent: Should be the phandle for the interrupt controller
   9  that services interrupts for this device
  10- interrupt: Should contain the timer interrupt number
  11
  12Example:
  13
  14        timer@f0000000 {
  15                compatible = "st,spear-timer";
  16                reg = <0xf0000000 0x400>;
  17                interrupts = <2>;
  18        };
  19