Advanced Configuration and Power Interface Specification

Advanced Configuration and Power Interface Specification
11.4.19 _TRT (Thermal Relationship Table)
This object evaluates to a package of packages each of which describes the thermal relationship
between devices within a thermal zone. OSPM uses the combined information about the thermal
relationships of all devices in the thermal zone to make thermal policy decisions.
Arguments:
None
Return Value:
A variable-length Package containing a list of Thermal Relationship Packages as described below
Return Value Information
Package {
ThermalRelationship[0]
….
ThermalRelationship[n]
}
// Package
// Package
Each ThermalRelationship sub-Package contains the elements described below:
Package {
SourceDevice,
TargetDevice,
Influence,
SamplingPeriod,
Reserved1,
Reserved2,
Reserved3,
Reserved4
},
// Object Reference to a Device Object
// Object Reference to a Device Object
// Integer
// Integer
// Integer
// Integer
// Integer
// Integer
Table 11-288 Thermal Relationship Package Values
Element Object Type Description
Source
Device
Target
Device
Reference
(to a device)
Reference
(to a device)
The device that is influencing the device indicated by TargetDevice.
The device that is influenced by the device indicated by SourceDevice.
Influence Integer The thermal influence of SourceDevice on TargetDevice - represented as
tenths of degrees Kelvin that the device indicated by SourceDevice raises the
temperature of the device indicated by TargetDevice per watt of thermal load
that SourceDevice generates.
Sampling
Period
Reserved
(1-4)
Integer
Integer
The minimum period of time in tenths of seconds that OSPM should wait after
applying a passive control to the device indicated by SourceDevice to detect
its impact on the device indicated by TargetDevice.
Reserved for future use.
620 April, 2015 Version 6.0