[PATCHv2 1/2] iio: Documentation: Add proximity unit

[Enric Balletbo i Serra]

To follow iio guidelines Where possible we stick to the raw SI unit, so
specify meters for proximity.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
---
 Documentation/ABI/testing/sysfs-bus-iio | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index b8f220f..1bd8ed1 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -1245,7 +1245,8 @@ Description:
 		reflectivity of infrared or ultrasound emitted.
 		Often these sensors are unit less and as such conversion
 		to SI units is not possible. Higher proximity measurements
-		indicate closer objects, and vice versa.
+		indicate closer objects, and vice versa. Units after
+		application of scale and offset are meters.
 
 What:		/sys/.../iio:deviceX/in_illuminance_input
 What:		/sys/.../iio:deviceX/in_illuminance_raw
-- 
2.9.3