Documentation/devicetree/bindings/pwm/pwm-stm32.txt

   1 STMicroelectronics STM32 Timers PWM bindings
   2
   3 Must be a sub-node of an STM32 Timers device tree node.
   4 See ../mfd/stm32-timers.txt for details about the parent node.
   5
   6 Required parameters:
   7 - compatible:           Must be "st,stm32-pwm".
   8 - pinctrl-names:        Set to "default".
   9 - pinctrl-0:            List of phandles pointing to pin configuration nodes for PWM module.
  10                         For Pinctrl properties see ../pinctrl/pinctrl-bindings.txt
  11 - #pwm-cells:           Should be set to 3. This PWM chip uses the default 3 cells
  12                         bindings defined in pwm.txt.
  13
  14 Optional parameters:
  15 - st,breakinput:        One or two <index level filter> to describe break input configurations.
  16                         "index" indicates on which break input (0 or 1) the configuration
  17                         should be applied.
  18                         "level" gives the active level (0=low or 1=high) of the input signal
  19                         for this configuration.
  20                         "filter" gives the filtering value to be applied.
  21
  22 Example:
  23         timers@40010000 {
  24                 #address-cells = <1>;
  25                 #size-cells = <0>;
  26                 compatible = "st,stm32-timers";
  27                 reg = <0x40010000 0x400>;
  28                 clocks = <&rcc 0 160>;
  29                 clock-names = "int";
  30
  31                 pwm {
  32                         compatible = "st,stm32-pwm";
  33                         #pwm-cells = <3>;
  34                         pinctrl-0       = <&pwm1_pins>;
  35                         pinctrl-names   = "default";
  36                         st,breakinput = <0 1 5>;
  37                 };
  38         };