1# SPDX-License-Identifier: GPL-2.0-only 2menu "ARM System Control and Management Interface Protocol" 3 4config ARM_SCMI_PROTOCOL 5 tristate "ARM System Control and Management Interface (SCMI) Message Protocol" 6 depends on ARM || ARM64 || COMPILE_TEST 7 help 8 ARM System Control and Management Interface (SCMI) protocol is a 9 set of operating system-independent software interfaces that are 10 used in system management. SCMI is extensible and currently provides 11 interfaces for: Discovery and self-description of the interfaces 12 it supports, Power domain management which is the ability to place 13 a given device or domain into the various power-saving states that 14 it supports, Performance management which is the ability to control 15 the performance of a domain that is composed of compute engines 16 such as application processors and other accelerators, Clock 17 management which is the ability to set and inquire rates on platform 18 managed clocks and Sensor management which is the ability to read 19 sensor data, and be notified of sensor value. 20 21 This protocol library provides interface for all the client drivers 22 making use of the features offered by the SCMI. 23 24if ARM_SCMI_PROTOCOL 25 26config ARM_SCMI_NEED_DEBUGFS 27 bool 28 help 29 This declares whether at least one SCMI facility is configured 30 which needs debugfs support. When selected causess the creation 31 of a common SCMI debugfs root directory. 32 33config ARM_SCMI_RAW_MODE_SUPPORT 34 bool "Enable support for SCMI Raw transmission mode" 35 depends on DEBUG_FS 36 select ARM_SCMI_NEED_DEBUGFS 37 help 38 Enable support for SCMI Raw transmission mode. 39 40 If enabled allows the direct injection and snooping of SCMI bare 41 messages through a dedicated debugfs interface. 42 It is meant to be used by SCMI compliance/testing suites. 43 44 When enabled regular SCMI drivers interactions are inhibited in 45 order to avoid unexpected interactions with the SCMI Raw message 46 flow. If unsure say N. 47 48config ARM_SCMI_RAW_MODE_SUPPORT_COEX 49 bool "Allow SCMI Raw mode coexistence with normal SCMI stack" 50 depends on ARM_SCMI_RAW_MODE_SUPPORT 51 help 52 Allow SCMI Raw transmission mode to coexist with normal SCMI stack. 53 54 This will allow regular SCMI drivers to register with the core and 55 operate normally, thing which could make an SCMI test suite using the 56 SCMI Raw mode support unreliable. If unsure, say N. 57 58config ARM_SCMI_DEBUG_COUNTERS 59 bool "Enable SCMI communication debug metrics tracking" 60 select ARM_SCMI_NEED_DEBUGFS 61 depends on DEBUG_FS 62 default n 63 help 64 Enables tracking of some key communication metrics for debug 65 purposes. It may track metrics like how many messages were sent 66 or received, were there any failures, what kind of failures, ..etc. 67 68 Enable this option to create a new debugfs directory which contains 69 such useful debug counters. This can be helpful for debugging and 70 SCMI monitoring. 71 72source "drivers/firmware/arm_scmi/transports/Kconfig" 73source "drivers/firmware/arm_scmi/vendors/imx/Kconfig" 74 75endif #ARM_SCMI_PROTOCOL 76 77config ARM_SCMI_POWER_CONTROL 78 tristate "SCMI system power control driver" 79 depends on ARM_SCMI_PROTOCOL || (COMPILE_TEST && OF) 80 help 81 This enables System Power control logic which binds system shutdown or 82 reboot actions to SCMI System Power notifications generated by SCP 83 firmware. 84 85 This driver can also be built as a module. If so, the module will be 86 called scmi_power_control. Note this may needed early in boot to catch 87 early shutdown/reboot SCMI requests. 88 89endmenu 90