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docs: iio: document the 'index' attribute too 

Two out of three attributes are documented, document the third one too.

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Link: https://lore.kernel.org/r/20210215143511.25471-4-luca@lucaceresoli.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Luca Ceresoli 2021-02-15 15:35:09 +01:00 committed by Jonathan Cameron
parent f2163c1e36
commit bd9a013d29
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Documentation/driver-api/iio/buffers.rst
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@ -34,6 +34,7 @@ attributes of the following form:
* :file:`enable`, used for enabling a channel. If and only if its attribute
is non *zero*, then a triggered capture will contain data samples for this
channel.
* :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] .