1Kernel driver k10temp 2===================== 3 4Supported chips: 5 6* AMD Family 10h processors: 7 8 Socket F: Quad-Core/Six-Core/Embedded Opteron (but see below) 9 10 Socket AM2+: Quad-Core Opteron, Phenom (II) X3/X4, Athlon X2 (but see below) 11 12 Socket AM3: Quad-Core Opteron, Athlon/Phenom II X2/X3/X4, Sempron II 13 14 Socket S1G3: Athlon II, Sempron, Turion II 15 16* AMD Family 11h processors: 17 18 Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra) 19 20* AMD Family 12h processors: "Llano" (E2/A4/A6/A8-Series) 21 22* AMD Family 14h processors: "Brazos" (C/E/G/Z-Series) 23 24* AMD Family 15h processors: "Bulldozer" (FX-Series), "Trinity", "Kaveri", 25 "Carrizo", "Stoney Ridge", "Bristol Ridge" 26 27* AMD Family 16h processors: "Kabini", "Mullins" 28 29* AMD Family 17h processors: "Zen", "Zen 2" 30 31* AMD Family 18h processors: "Hygon Dhyana" 32 33* AMD Family 19h processors: "Zen 3" 34 35 Prefix: 'k10temp' 36 37 Addresses scanned: PCI space 38 39 Datasheets: 40 41 BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h Processors: 42 43 http://support.amd.com/us/Processor_TechDocs/31116.pdf 44 45 BIOS and Kernel Developer's Guide (BKDG) for AMD Family 11h Processors: 46 47 http://support.amd.com/us/Processor_TechDocs/41256.pdf 48 49 BIOS and Kernel Developer's Guide (BKDG) for AMD Family 12h Processors: 50 51 http://support.amd.com/us/Processor_TechDocs/41131.pdf 52 53 BIOS and Kernel Developer's Guide (BKDG) for AMD Family 14h Models 00h-0Fh Processors: 54 55 http://support.amd.com/us/Processor_TechDocs/43170.pdf 56 57 Revision Guide for AMD Family 10h Processors: 58 59 http://support.amd.com/us/Processor_TechDocs/41322.pdf 60 61 Revision Guide for AMD Family 11h Processors: 62 63 http://support.amd.com/us/Processor_TechDocs/41788.pdf 64 65 Revision Guide for AMD Family 12h Processors: 66 67 http://support.amd.com/us/Processor_TechDocs/44739.pdf 68 69 Revision Guide for AMD Family 14h Models 00h-0Fh Processors: 70 71 http://support.amd.com/us/Processor_TechDocs/47534.pdf 72 73 AMD Family 11h Processor Power and Thermal Data Sheet for Notebooks: 74 75 http://support.amd.com/us/Processor_TechDocs/43373.pdf 76 77 AMD Family 10h Server and Workstation Processor Power and Thermal Data Sheet: 78 79 http://support.amd.com/us/Processor_TechDocs/43374.pdf 80 81 AMD Family 10h Desktop Processor Power and Thermal Data Sheet: 82 83 http://support.amd.com/us/Processor_TechDocs/43375.pdf 84 85Author: Clemens Ladisch <clemens@ladisch.de> 86 87Description 88----------- 89 90This driver permits reading of the internal temperature sensor of AMD 91Family 10h/11h/12h/14h/15h/16h processors. 92 93All these processors have a sensor, but on those for Socket F or AM2+, 94the sensor may return inconsistent values (erratum 319). The driver 95will refuse to load on these revisions unless you specify the "force=1" 96module parameter. 97 98Due to technical reasons, the driver can detect only the mainboard's 99socket type, not the processor's actual capabilities. Therefore, if you 100are using an AM3 processor on an AM2+ mainboard, you can safely use the 101"force=1" parameter. 102 103For CPUs older than Family 17h, there is one temperature measurement value, 104available as temp1_input in sysfs. It is measured in degrees Celsius with a 105resolution of 1/8th degree. Please note that it is defined as a relative 106value; to quote the AMD manual:: 107 108 Tctl is the processor temperature control value, used by the platform to 109 control cooling systems. Tctl is a non-physical temperature on an 110 arbitrary scale measured in degrees. It does _not_ represent an actual 111 physical temperature like die or case temperature. Instead, it specifies 112 the processor temperature relative to the point at which the system must 113 supply the maximum cooling for the processor's specified maximum case 114 temperature and maximum thermal power dissipation. 115 116The maximum value for Tctl is available in the file temp1_max. 117 118If the BIOS has enabled hardware temperature control, the threshold at 119which the processor will throttle itself to avoid damage is available in 120temp1_crit and temp1_crit_hyst. 121 122On some AMD CPUs, there is a difference between the die temperature (Tdie) and 123the reported temperature (Tctl). Tdie is the real measured temperature, and 124Tctl is used for fan control. While Tctl is always available as temp1_input, 125the driver exports Tdie temperature as temp2_input for those CPUs which support 126it. 127 128Models from 17h family report relative temperature, the driver aims to 129compensate and report the real temperature. 130 131On Family 17h and Family 18h CPUs, additional temperature sensors may report 132Core Complex Die (CCD) temperatures. Up to 8 such temperatures are reported 133as temp{3..10}_input, labeled Tccd{1..8}. Actual support depends on the CPU 134variant. 135