linux/Documentation/devicetree/bindings/arm/global_timer.txt
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   2* ARM Global Timer
   3        Cortex-A9 are often associated with a per-core Global timer.
   4
   5** Timer node required properties:
   6
   7- compatible : Should be "arm,cortex-a9-global-timer"
   8                Driver supports versions r2p0 and above.
   9
  10- interrupts : One interrupt to each core
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  12- reg : Specify the base address and the size of the GT timer
  13        register window.
  14
  15- clocks : Should be phandle to a clock.
  16
  17Example:
  18
  19        timer@2c000600 {
  20                compatible = "arm,cortex-a9-global-timer";
  21                reg = <0x2c000600 0x20>;
  22                interrupts = <1 13 0xf01>;
  23                clocks = <&arm_periph_clk>;
  24        };
  25