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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
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58 lines
1.8 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
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Kernel driver peci-dimmtemp
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===========================
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Supported chips:
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One of Intel server CPUs listed below which is connected to a PECI bus.
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* Intel Xeon E5/E7 v3 server processors
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Intel Xeon E5-14xx v3 family
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Intel Xeon E5-24xx v3 family
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Intel Xeon E5-16xx v3 family
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Intel Xeon E5-26xx v3 family
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Intel Xeon E5-46xx v3 family
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Intel Xeon E7-48xx v3 family
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Intel Xeon E7-88xx v3 family
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* Intel Xeon E5/E7 v4 server processors
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Intel Xeon E5-16xx v4 family
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Intel Xeon E5-26xx v4 family
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Intel Xeon E5-46xx v4 family
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Intel Xeon E7-48xx v4 family
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Intel Xeon E7-88xx v4 family
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* Intel Xeon Scalable server processors
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Intel Xeon D family
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Intel Xeon Bronze family
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Intel Xeon Silver family
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Intel Xeon Gold family
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Intel Xeon Platinum family
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Datasheet: Available from http://www.intel.com/design/literature.htm
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Author: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
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Description
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-----------
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This driver implements a generic PECI hwmon feature which provides
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Temperature sensor on DIMM readings that are accessible via the processor PECI interface.
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All temperature values are given in millidegree Celsius and will be measurable
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only when the target CPU is powered on.
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Sysfs interface
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-------------------
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======================= =======================================================
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temp[N]_label Provides string "DIMM CI", where C is DIMM channel and
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I is DIMM index of the populated DIMM.
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temp[N]_input Provides current temperature of the populated DIMM.
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temp[N]_max Provides thermal control temperature of the DIMM.
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temp[N]_crit Provides shutdown temperature of the DIMM.
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======================= =======================================================
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Note:
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DIMM temperature attributes will appear when the client CPU's BIOS
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completes memory training and testing.
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