| .. SPDX-License-Identifier: GPL-2.0-only |
| |
| Kernel driver peci-cputemp |
| ========================== |
| |
| Supported chips: |
| One of Intel server CPUs listed below which is connected to a PECI bus. |
| * Intel Xeon E5/E7 v3 server processors |
| Intel Xeon E5-14xx v3 family |
| Intel Xeon E5-24xx v3 family |
| Intel Xeon E5-16xx v3 family |
| Intel Xeon E5-26xx v3 family |
| Intel Xeon E5-46xx v3 family |
| Intel Xeon E7-48xx v3 family |
| Intel Xeon E7-88xx v3 family |
| * Intel Xeon E5/E7 v4 server processors |
| Intel Xeon E5-16xx v4 family |
| Intel Xeon E5-26xx v4 family |
| Intel Xeon E5-46xx v4 family |
| Intel Xeon E7-48xx v4 family |
| Intel Xeon E7-88xx v4 family |
| * Intel Xeon Scalable server processors |
| Intel Xeon D family |
| Intel Xeon Bronze family |
| Intel Xeon Silver family |
| Intel Xeon Gold family |
| Intel Xeon Platinum family |
| |
| Datasheet: Available from http://www.intel.com/design/literature.htm |
| |
| Author: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> |
| |
| Description |
| ----------- |
| |
| This driver implements a generic PECI hwmon feature which provides Digital |
| Thermal Sensor (DTS) thermal readings of the CPU package and CPU cores that are |
| accessible via the processor PECI interface. |
| |
| All temperature values are given in millidegree Celsius and will be measurable |
| only when the target CPU is powered on. |
| |
| Sysfs interface |
| ------------------- |
| |
| ======================= ======================================================= |
| temp1_label "Die" |
| temp1_input Provides current die temperature of the CPU package. |
| temp1_max Provides thermal control temperature of the CPU package |
| which is also known as Tcontrol. |
| temp1_crit Provides shutdown temperature of the CPU package which |
| is also known as the maximum processor junction |
| temperature, Tjmax or Tprochot. |
| temp1_crit_hyst Provides the hysteresis value from Tcontrol to Tjmax of |
| the CPU package. |
| |
| temp2_label "DTS" |
| temp2_input Provides current temperature of the CPU package scaled |
| to match DTS thermal profile. |
| temp2_max Provides thermal control temperature of the CPU package |
| which is also known as Tcontrol. |
| temp2_crit Provides shutdown temperature of the CPU package which |
| is also known as the maximum processor junction |
| temperature, Tjmax or Tprochot. |
| temp2_crit_hyst Provides the hysteresis value from Tcontrol to Tjmax of |
| the CPU package. |
| |
| temp3_label "Tcontrol" |
| temp3_input Provides current Tcontrol temperature of the CPU |
| package which is also known as Fan Temperature target. |
| Indicates the relative value from thermal monitor trip |
| temperature at which fans should be engaged. |
| temp3_crit Provides Tcontrol critical value of the CPU package |
| which is same to Tjmax. |
| |
| temp4_label "Tthrottle" |
| temp4_input Provides current Tthrottle temperature of the CPU |
| package. Used for throttling temperature. If this value |
| is allowed and lower than Tjmax - the throttle will |
| occur and reported at lower than Tjmax. |
| |
| temp5_label "Tjmax" |
| temp5_input Provides the maximum junction temperature, Tjmax of the |
| CPU package. |
| |
| temp[6-N]_label Provides string "Core X", where X is resolved core |
| number. |
| temp[6-N]_input Provides current temperature of each core. |
| |
| ======================= ======================================================= |
