1Kernel driver k10temp 2===================== 3 4Supported chips: 5* AMD Family 10h processors: 6 Socket F: Quad-Core/Six-Core/Embedded Opteron (but see below) 7 Socket AM2+: Quad-Core Opteron, Phenom (II) X3/X4, Athlon X2 (but see below) 8 Socket AM3: Quad-Core Opteron, Athlon/Phenom II X2/X3/X4, Sempron II 9 Socket S1G3: Athlon II, Sempron, Turion II 10* AMD Family 11h processors: 11 Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra) 12 13 Prefix: 'k10temp' 14 Addresses scanned: PCI space 15 Datasheets: 16 BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h Processors: 17 http://support.amd.com/us/Processor_TechDocs/31116.pdf 18 BIOS and Kernel Developer's Guide (BKDG) for AMD Family 11h Processors: 19 http://support.amd.com/us/Processor_TechDocs/41256.pdf 20 Revision Guide for AMD Family 10h Processors: 21 http://support.amd.com/us/Processor_TechDocs/41322.pdf 22 Revision Guide for AMD Family 11h Processors: 23 http://support.amd.com/us/Processor_TechDocs/41788.pdf 24 AMD Family 11h Processor Power and Thermal Data Sheet for Notebooks: 25 http://support.amd.com/us/Processor_TechDocs/43373.pdf 26 AMD Family 10h Server and Workstation Processor Power and Thermal Data Sheet: 27 http://support.amd.com/us/Processor_TechDocs/43374.pdf 28 AMD Family 10h Desktop Processor Power and Thermal Data Sheet: 29 http://support.amd.com/us/Processor_TechDocs/43375.pdf 30 31Author: Clemens Ladisch <clemens@ladisch.de> 32 33Description 34----------- 35 36This driver permits reading of the internal temperature sensor of AMD 37Family 10h and 11h processors. 38 39All these processors have a sensor, but on those for Socket F or AM2+, 40the sensor may return inconsistent values (erratum 319). The driver 41will refuse to load on these revisions unless you specify the "force=1" 42module parameter. 43 44Due to technical reasons, the driver can detect only the mainboard's 45socket type, not the processor's actual capabilities. Therefore, if you 46are using an AM3 processor on an AM2+ mainboard, you can safely use the 47"force=1" parameter. 48 49There is one temperature measurement value, available as temp1_input in 50sysfs. It is measured in degrees Celsius with a resolution of 1/8th degree. 51Please note that it is defined as a relative value; to quote the AMD manual: 52 53 Tctl is the processor temperature control value, used by the platform to 54 control cooling systems. Tctl is a non-physical temperature on an 55 arbitrary scale measured in degrees. It does _not_ represent an actual 56 physical temperature like die or case temperature. Instead, it specifies 57 the processor temperature relative to the point at which the system must 58 supply the maximum cooling for the processor's specified maximum case 59 temperature and maximum thermal power dissipation. 60 61The maximum value for Tctl is available in the file temp1_max. 62 63If the BIOS has enabled hardware temperature control, the threshold at 64which the processor will throttle itself to avoid damage is available in 65temp1_crit and temp1_crit_hyst. 66