Documentation/devicetree/bindings/pps/pps-gpio.txt

   1 Device-Tree Bindings for a PPS Signal on GPIO
   2
   3 These properties describe a PPS (pulse-per-second) signal connected to
   4 a GPIO pin.
   5
   6 Required properties:
   7 - compatible: should be "pps-gpio"
   8 - gpios: one PPS GPIO in the format described by ../gpio/gpio.txt
   9
  10 Optional properties:
  11 - assert-falling-edge: when present, assert is indicated by a falling edge
  12                        (instead of by a rising edge)
  13
  14 Example:
  15         pps {
  16                 pinctrl-names = "default";
  17                 pinctrl-0 = <&pinctrl_pps>;
  18
  19                 gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
  20                 assert-falling-edge;
  21
  22                 compatible = "pps-gpio";
  23                 status = "okay";
  24         };