Rethinking U-Boot Devicetree Story
summary
Argues for replacing ad‑hoc DTS imports with full-tree alignment by pulling Linux DT snapshots into U-Boot, implements a git subtree import of the DT snapshot, adds an opt-in OFF_UPSTREAM Kconfig and a build-time make dtbs_check binding checker, and proves merging upstream is feasible (platforms migrating include MLogic, Qualcomm, Rockchip, NXP, Marvell). Highlights tradeoffs: reduces duplicated DT maintenance and enables firmware to supply a canonical DT, while ABI breakages remain a risk mitigated by sync only major releases, cherry‑picks, and an ABI‑checking tool.
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chapters (7)
- 0:00Introduction to device tree
- 0:54Fragmentation issues
- 1:33Embedded ecosystem context
- 2:30Improving the device tree
- 31:29Question and answer session
- 32:15Discussion on compatibility
- 50:02Closing remarks
