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| /openbmc/linux/Documentation/iio/ |
| H A D | iio_configfs.rst | diff dafcf4ed8392476099c9e95642d2daa6e61ee1b6 Thu Feb 25 19:47:33 CST 2021 Gwendal Grignou <gwendal@chromium.org> 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>
|
| /openbmc/linux/drivers/iio/trigger/ |
| H A D | iio-trig-hrtimer.c | diff dafcf4ed8392476099c9e95642d2daa6e61ee1b6 Thu Feb 25 19:47:33 CST 2021 Gwendal Grignou <gwendal@chromium.org> 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>
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