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| -rw-r--r-- | Documentation/hwmon/index.rst | 2 | ||||
| -rw-r--r-- | Documentation/hwmon/peci-cputemp.rst | 90 | ||||
| -rw-r--r-- | Documentation/hwmon/peci-dimmtemp.rst | 57 | ||||
| -rw-r--r-- | MAINTAINERS | 2 |
4 files changed, 151 insertions, 0 deletions
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index df20022c741f..f387f661e1d7 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -161,6 +161,8 @@ Hardware Monitoring Kernel Drivers pcf8591 pim4328 pm6764tr + peci-cputemp + peci-dimmtemp pmbus powr1220 pxe1610 diff --git a/Documentation/hwmon/peci-cputemp.rst b/Documentation/hwmon/peci-cputemp.rst new file mode 100644 index 000000000000..fe0422248dc5 --- /dev/null +++ b/Documentation/hwmon/peci-cputemp.rst @@ -0,0 +1,90 @@ +.. 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. + +======================= ======================================================= diff --git a/Documentation/hwmon/peci-dimmtemp.rst b/Documentation/hwmon/peci-dimmtemp.rst new file mode 100644 index 000000000000..e562aed620de --- /dev/null +++ b/Documentation/hwmon/peci-dimmtemp.rst @@ -0,0 +1,57 @@ +.. SPDX-License-Identifier: GPL-2.0 + +Kernel driver peci-dimmtemp +=========================== + +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 +Temperature sensor on DIMM readings 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 +------------------- + +======================= ======================================================= + +temp[N]_label Provides string "DIMM CI", where C is DIMM channel and + I is DIMM index of the populated DIMM. +temp[N]_input Provides current temperature of the populated DIMM. +temp[N]_max Provides thermal control temperature of the DIMM. +temp[N]_crit Provides shutdown temperature of the DIMM. + +======================= ======================================================= + +Note: + DIMM temperature attributes will appear when the client CPU's BIOS + completes memory training and testing. diff --git a/MAINTAINERS b/MAINTAINERS index dbf2bb23a15f..b7992853a427 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -15108,6 +15108,8 @@ PECI HARDWARE MONITORING DRIVERS M: Iwona Winiarska <iwona.winiarska@intel.com> L: linux-hwmon@vger.kernel.org S: Supported +F: Documentation/hwmon/peci-cputemp.rst +F: Documentation/hwmon/peci-dimmtemp.rst F: drivers/hwmon/peci/ PECI SUBSYSTEM |