| 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. |
| |
| Various Family 17h and 18h CPUs report voltage and current telemetry |
| information. The following attributes may be reported. |
| |
| Attribute Label Description |
| =============== ======= ================ |
| in0_input Vcore Core voltage |
| in1_input Vsoc SoC voltage |
| curr1_input Icore Core current |
| curr2_input Isoc SoC current |
| =============== ======= ================ |
| |
| Current values are raw (unscaled) as reported by the CPU. Core current is |
| reported as multiples of 1A / LSB. SoC is reported as multiples of 0.25A |
| / LSB. The real current is board specific. Reported currents should be seen |
| as rough guidance, and should be scaled using sensors3.conf as appropriate |
| for a given board. |
