Has Sony ever contributed anything to FreeBSD?

I wonder whether Sony has ever contributed anything to FreeBSD codebase or the FreeBSD foundation.

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The most information I could find about it is a forum thread where angry FreeBSD fans react to an article talking about how the Nintendo Switch used FreeBSD components, which led to people mentioning the PlayStation 3 which led to a user talking about how Sony contributed upstream.

Which means I found literally nothing.
- AFAIK it's common knowledge that the PlayStation and the Switch use elements of the BSD software stack.
  
  That may not automatically imply 100% contribution, since the license allows them to use, modify and ship those elements without giving them back to the community.
  
  That may not automatically imply 100% contribution
  
  Thus the angry fans on the forum.
According to this PDF, there is a "SANETO Takanori" who works for Sony Japan it seems.

Also, "Playstation Cares" listed as a donor here.
Have you tried greping over freebsd sources? There were few contributions.
- No, I haven't.
Didn't they contribute networking stuff?

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