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thermal: sysfs-api.txt - document passive attribute for thermal zones 

Signed-off-by: Frans Pop <elendil@planet.nl>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Frans Pop 2009-10-26 08:39:00 +01:00 committed by Len Brown
parent 38bb0849a6
commit 29226ed3c3
1 changed files with 9 additions and 0 deletions
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Documentation/thermal/sysfs-api.txt
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@ -199,6 +199,15 @@ cdev[0-*]_trip_point
point.
RO, Optional
passive
Attribute is only present for zones in which the passive cooling
policy is not supported by native thermal driver. Default is zero
and can be set to a temperature (in millidegrees) to enable a
passive trip point for the zone. Activation is done by polling with
an interval of 1 second.
Unit: millidegrees Celsius
RW, Optional
*****************************
* Cooling device attributes *
*****************************