forked from ~ljy/RK356X_SDK_RELEASE
kernel/Documentation/ABI/testing/sysfs-bus-iio-adc-stm32
.. .. @@ -5,10 +5,13 @@ 5 5 The STM32 ADC can be configured to use external trigger sources 6 6 (e.g. timers, pwm or exti gpio). Then, it can be tuned to start 7 7 conversions on external trigger by either: 8 8 9 - "rising-edge" 9 10 - "falling-edge" 10 11 - "both-edges". 12 11 13 Reading returns current trigger polarity. 14 12 15 Writing value before enabling conversions sets trigger polarity. 13 16 14 17 What: /sys/bus/iio/devices/triggerX/trigger_polarity_available
