linux/Documentation/devicetree/bindings/cpufreq/cpufreq-spear.txt
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   1SPEAr cpufreq driver
   2-------------------
   3
   4SPEAr SoC cpufreq driver for CPU frequency scaling.
   5It supports both uniprocessor (UP) and symmetric multiprocessor (SMP) systems
   6which share clock across all CPUs.
   7
   8Required properties:
   9- cpufreq_tbl: Table of frequencies CPU could be transitioned into, in the
  10  increasing order.
  11
  12Optional properties:
  13- clock-latency: Specify the possible maximum transition latency for clock, in
  14  unit of nanoseconds.
  15
  16Both required and optional properties listed above must be defined under node
  17/cpus/cpu@0.
  18
  19Examples:
  20--------
  21cpus {
  22
  23        <...>
  24
  25        cpu@0 {
  26                compatible = "arm,cortex-a9";
  27                reg = <0>;
  28
  29                <...>
  30
  31                cpufreq_tbl = < 166000
  32                                200000
  33                                250000
  34                                300000
  35                                400000
  36                                500000
  37                                600000 >;
  38        };
  39
  40        <...>
  41
  42};
  43