Documentation/devicetree/bindings/pwm/atmel-tcb-pwm.txt

   1 Atmel TCB PWM controller
   2
   3 Required properties:
   4 - compatible: should be "atmel,tcb-pwm"
   5 - #pwm-cells: Should be 3.  The first cell specifies the per-chip index
   6   of the PWM to use, the second cell is the period in nanoseconds and
   7   bit 0 in the third cell is used to encode the polarity of PWM output.
   8   Set bit 0 of the third cell in PWM specifier to 1 for inverse polarity &
   9   set to 0 for normal polarity.
  10 - tc-block: The Timer Counter block to use as a PWM chip.
  11
  12 Example:
  13
  14 pwm {
  15         compatible = "atmel,tcb-pwm";
  16         #pwm-cells = <3>;
  17         tc-block = <1>;
  18 };