[colechristensen]

There is some sort of close relationship between Broadcom and the raspberry pi foundation which is not entirely clear, they are a bit more than just customers although companies use the “partnership” label to mean just about anything.

[joezydeco]

The relationship is very clear: Upton was a Broadcom FAE that started the RPi Foundation. The secondary story was that he found a use for an orphaned SoC and embarked on an 'educational' quest to make small computers for classrooms.

The real question is if Broadcom is devoting internal software resources to improving the ecosystem, or if it's coming from the devoted users. I don't track commits on kernel.org enough to know what's what.