CERN Open Hardware Licence 2.0
summary
CERN OHL v2 is a beta three variants license suite (strong reciprocal, weak reciprocal, permissive) that targets ASICs and FPGAs by defining an available component to limit upward copyleft so a board with proprietary chips need not force release of the whole board. It requires release of “complete source” and allows a source location requirement (even a short URL on packaging), adds SPDX tags for each variant, and recommends dual‑licensing where GPL compatibility is impractical.
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chapters (12)
- 0:00Introduction and history
- 1:00Goals and core challenges
- 2:02Addressing design challenges
- 3:51Scope and complete source
- 5:51Hardware design hierarchy
- 7:54Available components
- 9:16Copyleft and products
- 11:04Strong, weak, and permissive
- 13:12Relationship with GPL
- 15:20License compatibility
- 17:17Future and engagement
- 18:49Q&A session
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