linux/Documentation/devicetree/bindings/cpufreq/cpufreq-exynos5440.txt
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   2Exynos5440 cpufreq driver
   3-------------------
   4
   5Exynos5440 SoC cpufreq driver for CPU frequency scaling.
   6
   7Required properties:
   8- interrupts: Interrupt to know the completion of cpu frequency change.
   9- operating-points: Table of frequencies and voltage CPU could be transitioned into,
  10        in the decreasing order. Frequency should be in KHz units and voltage
  11        should be in microvolts.
  12
  13Optional properties:
  14- clock-latency: Clock monitor latency in microsecond.
  15
  16All the required listed above must be defined under node cpufreq.
  17
  18Example:
  19--------
  20        cpufreq@160000 {
  21                compatible = "samsung,exynos5440-cpufreq";
  22                reg = <0x160000 0x1000>;
  23                interrupts = <0 57 0>;
  24                operating-points = <
  25                                1000000 975000
  26                                800000  925000>;
  27                clock-latency = <100000>;
  28        };
  29