Overview of the SCMI Support in Zephyr
summary
SCMI support in Zephyr exists since Zephyr 4.0.0 and implements the ARM specification v3.2 (ARM v4.0 is alpha); only two upstream boards are enabled: IDX95 EVK and IDA MX 943 EVK. Architecture splits into transport, core and protocol layers; transport supports mailbox over shared memory with either one bidirectional or two unidirectional channels, and channels can be allocated statically at build time or dynamically at runtime. Currently three standard protocols (clock, ping, power-domain) plus NXP vendor CPU-domain are partially implemented, synchronous messages only; samples, docs and CI tests are planned.
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chapters (8)
- 0:00SCMI in Zephyr overview
- 1:06SCMI architecture layers
- 2:32Transport drivers and channels
- 3:36Supported SCMI protocols
- 4:41Core layer benefits
- 5:26Future work
- 7:56Q&A on transport limits
- 8:40SCMI testing in CI
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