forked from Minki/linux
bdcfb955ac
Add documentation for peci-cputemp driver that provides DTS thermal readings for CPU packages and CPU cores, and peci-dimmtemp driver that provides Temperature Sensor on DIMM readings. Co-developed-by: Iwona Winiarska <iwona.winiarska@intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> Signed-off-by: Iwona Winiarska <iwona.winiarska@intel.com> Link: https://lore.kernel.org/r/20220208153639.255278-13-iwona.winiarska@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
58 lines
1.8 KiB
ReStructuredText
58 lines
1.8 KiB
ReStructuredText
.. 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.
|