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Gwendal Grignou dafcf4ed83 iio: hrtimer: Allow sub Hz granularity 
Allow setting frequency below 1Hz or sub 1Hz precision.
Useful for slow sensors like ALS.

Test frequency is set properly:
modprobe iio-trig-hrtimer && \
mkdir /sys/kernel/config/iio/triggers/hrtimer/t1 && \
cd /sys/bus/iio/devices/triggerX ;
for i in 1 .1 .01 .001 ; do
  echo $i > sampling_frequency
  cat sampling_frequency
done

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210226014733.2108544-1-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-03-25 19:13:49 +00:00
..
ep93xx_adc.rst docs: iio: Correct a typo 2021-01-21 14:06:00 -07:00
iio_configfs.rst iio: hrtimer: Allow sub Hz granularity 2021-03-25 19:13:49 +00:00
index.rst