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Kernel driver k10temp
=====================
Supported chips:
* AMD Family
10h processors:
Socket F: Quad-Core/Six-Core/Embedded Opteron (but see below)
Socket AM2+: Quad-Core Opteron, Phenom (II) X3/X4, Athlon X2 (but see below)
Socket AM3: Quad-Core Opteron, Athlon/Phenom II X2/X3/X4, Sempron II
Socket S1G3: Athlon II, Sempron, Turion II
* AMD Family
11h processors:
Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra)
* AMD Family
12h processors: "Llano" (E2/A4/A6/A8-Series)
* AMD Family
14h processors: "Brazos" (C/E/G/Z-Series)
* AMD Family
15h processors: "Bulldozer" (FX-Series), "Trinity", "Kaveri",
"Carrizo", "Stoney Ridge", "Bristol Ridge"
* AMD Family
16h processors: "Kabini", "Mullins"
* AMD Family
17h processors: "Zen", "Zen
2"
* AMD Family
18h processors: "Hygon Dhyana"
* AMD Family
19h processors: "Zen
3"
Prefix: 'k10temp'
Addresses scanned: PCI space
Datasheets:
BIOS and Kernel Developer's Guide (BKDG) For AMD Family
10h Processors:
http://support.amd.com/us/Processor_TechDocs/31116.pdf
BIOS and Kernel Developer's Guide (BKDG) for AMD Family
11h Processors:
http://support.amd.com/us/Processor_TechDocs/41256.pdf
BIOS and Kernel Developer's Guide (BKDG) for AMD Family
12h Processors:
http://support.amd.com/us/Processor_TechDocs/41131.pdf
BIOS and Kernel Developer's Guide (BKDG) for AMD Family
14h Models
00h-
0Fh Processors:
http://support.amd.com/us/Processor_TechDocs/43170.pdf
Revision Guide for AMD Family
10h Processors:
http://support.amd.com/us/Processor_TechDocs/41322.pdf
Revision Guide for AMD Family
11h Processors:
http://support.amd.com/us/Processor_TechDocs/41788.pdf
Revision Guide for AMD Family
12h Processors:
http://support.amd.com/us/Processor_TechDocs/44739.pdf
Revision Guide for AMD Family
14h Models
00h-
0Fh Processors:
http://support.amd.com/us/Processor_TechDocs/47534.pdf
AMD Family
11h Processor Power and Thermal Data Sheet for Notebooks:
http://support.amd.com/us/Processor_TechDocs/43373.pdf
AMD Family
10h Server and Workstation Processor Power and Thermal Data Sheet:
http://support.amd.com/us/Processor_TechDocs/43374.pdf
AMD Family
10h Desktop Processor Power and Thermal Data Sheet:
http://support.amd.com/us/Processor_TechDocs/43375.pdf
Author: Clemens Ladisch <clemens@ladisch.de>
Description
-----------
This driver permits reading of the internal temperature sensor of AMD
Family
10h/
11h/
12h/
14h/
15h/
16h processors.
All these processors have a sensor, but on those for Socket F or AM2+,
the sensor may return inconsistent values (erratum
319). The driver
will refuse to load on these revisions unless you specify the "force=
1"
module parameter.
Due to technical reasons, the driver can detect only the mainboard's
socket type, not the processor's actual capabilities. Therefore, if you
are using an AM3 processor on an AM2+ mainboard, you can safely use the
"force=
1" parameter.
For CPUs older than Family
17h, there is one temperature measurement value,
available as temp1_input in sysfs. It is measured in degrees Celsius with a
resolution of
1/
8th degree. Please note that it is defined as a relative
value; to quote the AMD manual::
Tctl is the processor temperature control value, used by the platform to
control cooling systems. Tctl is a non-physical temperature on an
arbitrary scale measured in degrees. It does _not_ represent an actual
physical temperature like die or case temperature. Instead, it specifies
the processor temperature relative to the point at which the system must
supply the maximum cooling for the processor's specified maximum case
temperature and maximum thermal power dissipation.
The maximum value for Tctl is available in the file temp1_max.
If the BIOS has enabled hardware temperature control, the threshold at
which the processor will throttle itself to avoid damage is available in
temp1_crit and temp1_crit_hyst.
On some AMD CPUs, there is a difference between the die temperature (Tdie) and
the reported temperature (Tctl). Tdie is the real measured temperature, and
Tctl is used for fan control. While Tctl is always available as temp1_input,
the driver exports Tdie temperature as temp2_input for those CPUs which support
it.
Models from
17h family report relative temperature, the driver aims to
compensate and report the real temperature.
On Family
17h and Family
18h CPUs, additional temperature sensors may report
Core Complex Die (CCD) temperatures. Up to
8 such temperatures are reported
as temp{
3..
10}_input, labeled Tccd{
1..
8}. Actual support depends on the CPU
variant.