[PATCH 2/6] thermal: sysfs-api.txt - document passive attribute for thermal zones

[Frans Pop]

Signed-off-by: Frans Pop <elendil@xxxxxxxxx>
Acked-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Cc: Sujith Thomas <sujith.thomas@xxxxxxxxx>
Cc: Matthew Garrett <mjg59@xxxxxxxxxxxxx>
---
 Documentation/thermal/sysfs-api.txt |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
index 895337f..a87dc27 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 *
 *****************************
-- 
1.5.6.5

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