1 files changed, 7 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 2ce4dadaf3f5..5bc8a476c15e 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -280,6 +280,13 @@ Description:
                 If a discrete set of scale values are available, they
                 are listed in this attribute.
 
+What            /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
+KernelVersion:  2.6.35
+Contact:        linux-iio@vger.kernel.org
+Description:
+                Hardware applied gain factor. If shared across all channels,
+                <type>_hardwaregain is used.
+
 What:           /sys/.../in_accel_filter_low_pass_3db_frequency
 What:           /sys/.../in_magn_filter_low_pass_3db_frequency
 What:           /sys/.../in_anglvel_filter_low_pass_3db_frequency