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