Add an OpenThread RCP firmware package based on openthread/ot-nrf528xx#39
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ksperling-apple merged 4 commits intoproject-chip:mainfrom Feb 23, 2026
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This initial version targets the NRF528408 MDK dongle because the UF2 bootloader makes it very easy to flash with minimal tooling. Also add an otbr-rcp script for finding / managing USB RCPs and use it to add hot plugging support to the otbr-agent service. Miscellaneous improvements: - Avoid clobbering /etc/config/otbr-agent - Add default configuration for a 'thread' firewall zone - Minor patches to otbr-agent to improve RCP device handling
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Code Review
This pull request introduces an OpenThread RCP firmware package for the NRF52840 MDK dongle, which is a significant addition. The changes include a new prebuilt toolchain package, utilities for UF2 flashing, and substantial enhancements to the otbr-agent service for improved RCP device management, such as hot-plugging and automatic firmware updates. The overall implementation is well-structured and robust. I have identified one high-severity bug related to device property parsing in a shell script and a medium-severity issue concerning code clarity in the new UF2 utility. The rest of the changes look good.
ForemanZack-CableLabs
approved these changes
Feb 23, 2026
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This initial version targets the NRF528408 MDK dongle because the UF2
bootloader makes it very easy to flash with minimal tooling.
Also add an otbr-rcp script for finding / managing USB RCPs and use
it to add hot plugging support to the otbr-agent service.
Miscellaneous improvements: