linux/Documentation/devicetree/bindings/arm/twd.txt
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   1* ARM Timer Watchdog
   2
   3ARM 11MP, Cortex-A5 and Cortex-A9 are often associated with a per-core
   4Timer-Watchdog (aka TWD), which provides both a per-cpu local timer
   5and watchdog.
   6
   7The TWD is usually attached to a GIC to deliver its two per-processor
   8interrupts.
   9
  10** Timer node required properties:
  11
  12- compatible : Should be one of:
  13        "arm,cortex-a9-twd-timer"
  14        "arm,cortex-a5-twd-timer"
  15        "arm,arm11mp-twd-timer"
  16
  17- interrupts : One interrupt to each core
  18
  19- reg : Specify the base address and the size of the TWD timer
  20        register window.
  21
  22Example:
  23
  24        twd-timer@2c000600 {
  25                compatible = "arm,arm11mp-twd-timer"";
  26                reg = <0x2c000600 0x20>;
  27                interrupts = <1 13 0xf01>;
  28        };
  29
  30** Watchdog node properties:
  31
  32- compatible : Should be one of:
  33        "arm,cortex-a9-twd-wdt"
  34        "arm,cortex-a5-twd-wdt"
  35        "arm,arm11mp-twd-wdt"
  36
  37- interrupts : One interrupt to each core
  38
  39- reg : Specify the base address and the size of the TWD watchdog
  40        register window.
  41
  42Example:
  43
  44        twd-watchdog@2c000620 {
  45                compatible = "arm,arm11mp-twd-wdt";
  46                reg = <0x2c000620 0x20>;
  47                interrupts = <1 14 0xf01>;
  48        };
  49