I3C, the Industry, and Linux
Talkat Open Source Summit Japan + AI_dev: Open Source GenAI & ML Summit + Automotive Linux Summit 2025 · 2025-12-08..12-10·
summary
I3C promises higher speed and dynamic addressing and mostly delivers: normal transfers and dynamic address assignment work, but clock stretching fails and hot join support is effectively rare (only LPS22HH found). Devices and dev‑boards remain scarce and pricey (controller boards €300, breakout sensors €20–€100), and professional USB adapters cost ~€1.5–2k until a community engineer ships a €4–€10 USB adapter plus an I3C analyzer for Sigrok, which makes hacking feasible. Linux core targets v1.0; user‑space API is missing and only a handful of drivers are upstream.
AI-written summary · about
chapters (17)
- 0:00Introduction
- 1:24Talk structure
- 2:53I3C speed advantages
- 4:39I3C promises vs testing
- 6:29Hot join challenges
- 9:00Component availability
- 12:11I3C specification versions
- 14:01I2C compatibility limits
- 15:52Debugging tools
- 18:19Industry adoption
- 21:31Sensor use cases
- 24:22Automotive challenges
- 25:27Linux I3C core status
- 27:37Missing user space interface
- 30:27I3C target driver progress
- 31:55Conclusions
- 34:51Q&A
