Documentation/ABI/testing/sysfs-bus-iio-adc-stm32

   1 What:           /sys/bus/iio/devices/triggerX/trigger_polarity
   2 KernelVersion:  4.11
   3 Contact:        fabrice.gasnier@st.com
   4 Description:
   5                 The STM32 ADC can be configured to use external trigger sources
   6                 (e.g. timers, pwm or exti gpio). Then, it can be tuned to start
   7                 conversions on external trigger by either:
   8
   9                 - "rising-edge"
  10                 - "falling-edge"
  11                 - "both-edges".
  12
  13                 Reading returns current trigger polarity.
  14
  15                 Writing value before enabling conversions sets trigger polarity.
  16
  17 What:           /sys/bus/iio/devices/triggerX/trigger_polarity_available
  18 KernelVersion:  4.11
  19 Contact:        fabrice.gasnier@st.com
  20 Description:
  21                 List all available trigger_polarity settings.