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authorFrans Pop <elendil@planet.nl>2009-10-26 08:39:00 +0100
committerLen Brown <len.brown@intel.com>2009-11-05 18:11:18 -0500
commit29226ed3c3b5cd0b2b0b1fb40ffeac3f796b80e9 (patch)
tree0f6efeacc400a5df2e395a89c164aebb203ff164 /Documentation/thermal
parent38bb0849a6799e05bb474a88f198522ae4ecace2 (diff)
downloadlinux-linaro-stable-29226ed3c3b5cd0b2b0b1fb40ffeac3f796b80e9.tar.gz
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>
Diffstat (limited to 'Documentation/thermal')
-rw-r--r--Documentation/thermal/sysfs-api.txt9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
index 895337f8c6ba..a87dc277a5ca 100644
--- a/Documentation/thermal/sysfs-api.txt
+++ b/Documentation/thermal/sysfs-api.txt
@@ -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 *
*****************************