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-rw-r--r--Documentation/hwmon/sysfs-interface7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface
index d73d2e8c753..a9a18ad0d17 100644
--- a/Documentation/hwmon/sysfs-interface
+++ b/Documentation/hwmon/sysfs-interface
@@ -152,6 +152,13 @@ fan[1-*]_div Fan divisor.
Note that this is actually an internal clock divisor, which
affects the measurable speed range, not the read value.
+fan[1-*]_target
+ Desired fan speed
+ Unit: revolution/min (RPM)
+ RW
+ Only makes sense if the chip supports closed-loop fan speed
+ control based on the measured fan speed.
+
Also see the Alarms section for status flags associated with fans.