| Kernel driver k10temp |
| ===================== |
| |
| Supported chips: |
| * AMD Family 10h processors: |
| Socket F: Quad-Core/Six-Core/Embedded Opteron |
| Socket AM2+: Opteron, Phenom (II) X3/X4 |
| 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) |
| |
| 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 |
| 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 |
| 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 and 11h processors. |
| |
| All these processors have a sensor, but on older revisions of Family 10h |
| processors, 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. |
| |
| 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. |
