hwmon: Add description of the update_rate sysfs attribute
The update_rate attribute can be used by drivers to let userspace choose
the update rate of the chip, if it is configurable.
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface
index 3de6b0b..d4e2917 100644
--- a/Documentation/hwmon/sysfs-interface
+++ b/Documentation/hwmon/sysfs-interface
@@ -80,9 +80,9 @@
given driver if the chip has the feature.
-********
-* Name *
-********
+*********************
+* Global attributes *
+*********************
name The chip name.
This should be a short, lowercase string, not containing
@@ -91,6 +91,13 @@
I2C devices get this attribute created automatically.
RO
+update_rate The rate at which the chip will update readings.
+ Unit: millisecond
+ RW
+ Some devices have a variable update rate. This attribute
+ can be used to change the update rate to the desired
+ frequency.
+
************
* Voltages *