diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 530809ccfacf336710a40cf501401ccae0bb6ae4..1ce46035ecab5fe66f41bf97f2ba26457f862ea5 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -55,6 +55,7 @@ Description:
 		then it is to be found in the base device directory.
 
 What:		/sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
+What:		/sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available
 What:		/sys/.../iio:deviceX/buffer/sampling_frequency_available
 What:		/sys/bus/iio/devices/triggerX/sampling_frequency_available
 KernelVersion:	2.6.35