iio: add documentation for current attribute

Add documentation for input current raw sysfs attribute.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index d760b0224ef7..1ac9ac20f530 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -1028,3 +1028,12 @@ Contact:	linux-iio@vger.kernel.org
 Description:
                 Raw value of rotation from true/magnetic north measured with
                 or without compensation from tilt sensors.
+
+What:           /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
+KernelVersion:  3.18
+Contact:        linux-iio@vger.kernel.org
+Description:
+                Raw current measurement from channel X. Units are in milliamps
+                after application of scale and offset. If no offset or scale is
+                present, output should be considered as processed with the
+                unit in milliamps.