docs: iio: mark "repeat" sysfs attribute as optional

Show that this field is optional, just like the shift value.

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Link: https://lore.kernel.org/r/20210215143511.25471-6-luca@lucaceresoli.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Luca Ceresoli 2021-02-15 15:35:11 +01:00 committed by Jonathan Cameron
parent 218977dcdb
commit 6bc5ebe8aa

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@ -37,7 +37,7 @@ attributes of the following form:
* :file:`index`, the scan_index of the channel.
* :file:`type`, description of the scan element data storage within the buffer
and hence the form in which it is read from user space.
Format is [be|le]:[s|u]bits/storagebitsXrepeat[>>shift] .
Format is [be|le]:[s|u]bits/storagebits[Xrepeat][>>shift] .
* *be* or *le*, specifies big or little endian.
* *s* or *u*, specifies if signed (2's complement) or unsigned.