Documentation/devicetree/bindings/power/opp.txt

   1 * Generic OPP Interface
   2
   3 SoCs have a standard set of tuples consisting of frequency and
   4 voltage pairs that the device will support per voltage domain. These
   5 are called Operating Performance Points or OPPs.
   6
   7 Properties:
   8 - operating-points: An array of 2-tuples items, and each item consists
   9   of frequency and voltage like <freq-kHz vol-uV>.
  10         freq: clock frequency in kHz
  11         vol: voltage in microvolt
  12
  13 Examples:
  14
  15 cpu@0 {
  16         compatible = "arm,cortex-a9";
  17         reg = <0>;
  18         next-level-cache = <&L2>;
  19         operating-points = <
  20                 /* kHz    uV */
  21                 792000  1100000
  22                 396000  950000
  23                 198000  850000
  24         >;
  25 };