Documentation/peci/peci.rst

1 .. SPDX-License-Identifier: GPL-2.0-only
7 The Platform Environment Control Interface (PECI) is a communication
9 (e.g. Baseboard Management Controller, BMC).
10 PECI provides services that allow the management controller to
13 controller is acting as a PECI originator and the processor - as
14 a PECI responder.
15 PECI can be used in both single processor and multiple-processor based
19 Intel PECI specification is not released as a dedicated document,
24 PECI Wire
25 ---------
27 PECI Wire interface uses a single wire for self-clocking and data
28 transfer. It does not require any additional control lines - the
29 physical layer is a self-clocked one-wire bus signal that begins each
32 value is logic '0' or logic '1'. PECI Wire also includes variable data
35 For PECI Wire, each processor package will utilize unique, fixed
37 have a fixed relationship with the processor socket ID - if one of the
41 PECI subsystem internals
42 ------------------------
44 .. kernel-doc:: include/linux/peci.h
45 .. kernel-doc:: drivers/peci/internal.h
46 .. kernel-doc:: drivers/peci/core.c
47 .. kernel-doc:: drivers/peci/request.c
49 PECI CPU Driver API
50 -------------------
51 .. kernel-doc:: drivers/peci/cpu.c