Documentation/devicetree/bindings/arm/pmu.txt

   1 * ARM Performance Monitor Units
   2
   3 ARM cores often have a PMU for counting cpu and cache events like cache misses
   4 and hits. The interface to the PMU is part of the ARM ARM. The ARM PMU
   5 representation in the device tree should be done as under:-
   6
   7 Required properties:
   8
   9 - compatible : should be one of
  10         "arm,cortex-a9-pmu"
  11         "arm,cortex-a8-pmu"
  12         "arm,arm1176-pmu"
  13         "arm,arm1136-pmu"
  14 - interrupts : 1 combined interrupt or 1 per core.
  15
  16 Example:
  17
  18 pmu {
  19         compatible = "arm,cortex-a9-pmu";
  20         interrupts = <100 101>;
  21 };