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-rw-r--r--Documentation/driver-api/iio/buffers.rst1
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/driver-api/iio/buffers.rst b/Documentation/driver-api/iio/buffers.rst
index 9f7dc245d37a..9dad7c94034b 100644
--- a/Documentation/driver-api/iio/buffers.rst
+++ b/Documentation/driver-api/iio/buffers.rst
@@ -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] .