Lightning Talk: Overview of the SCMI Support in Zephyr
summary
SCMI support lives in Zephyr since 4.0.0 and implements ARM SCMI v3.2 while v4.0 alpha exists, with only two upstream boards currently using it. The stack splits into transport, core, and protocol layers; transports include mailbox over shared memory with one bidirectional or two unidirectional channels, and channel allocation is either static at build time or dynamic at runtime. Supported protocols are limited: synchronous clock, power‑domain, ping and an NXP vendor CPU‑domain subset with notifications still pending.
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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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