Documentation: ABI: IIO: Add filter_type documentation

A previous patch added documentation for filter_type_available attributes.
However, the description for the value attribute (filter_type) was missing.
Add documentation for filter_type sysfs ABI.

Fixes: 01bb12922b60 ("Documentation: ABI: added filter mode doc in sysfs-bus-iio")
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/a8dbccac909e8d11e7d47561935a5575b1354d3a.1738680728.git.marcelo.schmitt@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 25d366d452a55293c420300335a0271a28855107..6a2543aa36eb316caab4c39d059edb9dc231d443 100644 (file)
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -2291,6 +2291,14 @@ Description:
                * "sinc3+pf3" - Sinc3 + device specific Post Filter 3.
                * "sinc3+pf4" - Sinc3 + device specific Post Filter 4.
 
+What:          /sys/bus/iio/devices/iio:deviceX/filter_type
+What:          /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_filter_type
+KernelVersion: 6.1
+Contact:       linux-iio@vger.kernel.org
+Description:
+               Specifies which filter type apply to the channel. The possible
+               values are given by the filter_type_available attribute.
+
 What:          /sys/.../events/in_proximity_thresh_either_runningperiod
 KernelVersion: 6.6
 Contact:       linux-iio@vger.kernel.org