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.. SPDX-License-Identifier: GPL-2.0
Kernel driver peci-dimmtemp
===========================
:Copyright: |copy| 2018-2019 Intel Corporation
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
Addresses scanned: PECI client address 0x30 - 0x37
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 DIMM components that are accessible
using the PECI Client Command Suite via the processor PECI client.
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.
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