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# System Control and Management Interface - Compliance Suite
**System Control and Management Interface (SCMI), which is a set of operating system-independent software interfaces that are used in system management. SCMI is extensible and currently provides interfaces for:
- Discovery and self-description of the interfaces it supports.
- Power domain management, which is the ability to place a given device or domain into the various power-saving states that it supports.
- Performance management, which is the ability to control the performance of a domain that is composed of compute engines such as application processors (APs), GPUs, or other accelerators.
- Clock management, which is the ability to set and inquire rates on platform-managed clocks.
- Sensor management, which is the ability to read sensor data, and be notified of sensor value changes.
- Reset domain management, which is the ability to place a given device or domain into various reset states.
- Voltage domain management, which is the ability to configure and manage the voltage level of a domain that provides voltage supply to a group of components.
- Power capping and monitoring, which is the ability to configure, set power caps and monitor the power consumption of power capping domains.
- Pin control protocol, which is intended for controlling pins or groups of pins, and their configuration
For more information, download the [SCMI Platform Design Document](https://developer.arm.com/documentation/den0056/e/?lang=en).
## SCMI - Architecture Compliance Suite
SCMI compliance suite is a collection of self-checking, portable C tests. SCMI compliance suite enables adopters of SCMI Platform Design Document \(PDD\) to test their own implementations. It provides a predefined library of tests and a test framework to execute these tests. The test suite can be adapted to different platforms. It also enables the extension of the current test library to include platform-specific custom commands and custom protocols.
- Code quality: REL v3.2 BET-1.
- The tests are written for version 3.2 of the SCMI PDD.
- The compliance suite maintains backward compatibility with version 3.1, 3.0, 2.0 and 1.0 of the SCMI PDD.
- The compliance suite is not a substitute for design verification.
- The compliance suite is verified against [SCP-firmware](https://github.com/ARM-software/SCP-firmware).
Use the master branch to get the latest version of the code with bug fixes and new features.
The mapping of the rules in the specification to the test cases and the steps followed in the tests are mentioned in the [Test Scenario].
See the [User Guide] for instructions to adapt, build and run the test suite.
For details on the design of the SCMI test suite, see [Validation Methodology Document].
The software is provided under Apache 2.0 license. Contributions to this project are accepted under the same license.
## Feedback and support
Arm values and welcomes any feedback and contributions to this project.
* For feedback, use the issue tracker that is associated with this project [Issue Tracker](https://gitlab.arm.com/tests/scmi-tests/-/issues).
* For support, send your queries to [support-scmi-acs@arm.com](mailto:support-scmi-acs@arm.com).
* Arm licensees can contact Arm directly through their partner managers.
* Arm welcomes code contributions through Gitlab pull requests.
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_Copyright (c) 2021, 2023-2024, Arm Limited and Contributors. All rights reserved._
[User Guide]: ./docs/arm_system_control_and_management_interface_test_suite_user_guide.pdf "SCMI Test Suite User Guide"
[Validation Methodology Document]: ./docs/arm_system_control_and_management_interface_test_suite_validation_methodology.pdf "SCMI Test Suite Design"
[Test Scenario]: ./docs/arm_system_control_and_management_interface_test_suite_test_scenario.pdf "SCMI Test Scenario"