The RK3588 SoC features a quad-core Arm Cortex-A76/A55 CPU, a Mali-G610 GPU, and a highly flexible I/O architecture that makes it ideal for embedded Linux SBCs like the Radxa Rock 5B+.
Over the past few months, I’ve been working on bringing parts of its support upstream including U-Boot, device-tree improvements, and tooling for reproducible builds and signal-integrity validation.
I’ve published my notes, patches, measurements, and build scripts here:
👉 GitHub Repository: https://github.com/brhinton/signal-analysis
The repository includes:
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Mainline U-Boot builds for the Rock 5B+
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Device-tree sources and board enablement
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UART/I²C signal-integrity captures
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Build instructions for kernel, bootloader, and debugging setup
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Patch workflows and upstream submission notes
This is ongoing work, and I’ll be updating the repo as I continue validating hardware interfaces, tuning drive strength, and preparing patches for upstream review.