linux/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
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   1Tegra SoC PWFM controller
   2
   3Required properties:
   4- compatible: should be one of:
   5  - "nvidia,tegra20-pwm"
   6  - "nvidia,tegra30-pwm"
   7- reg: physical base address and length of the controller's registers
   8- #pwm-cells: On Tegra the number of cells used to specify a PWM is 2. The
   9  first cell specifies the per-chip index of the PWM to use and the second
  10  cell is the period in nanoseconds.
  11
  12Example:
  13
  14        pwm: pwm@7000a000 {
  15                compatible = "nvidia,tegra20-pwm";
  16                reg = <0x7000a000 0x100>;
  17                #pwm-cells = <2>;
  18        };
  19