You’re right. That would be hard with some of the vendors.

Were blobs a big problem before?

i can understand blob for radios: by only using a signed blob you are restricting a malicious user from abusing the radio.

However, the problem with binary blobs is that they are binary blobs: no sources, can't make changes, can't adapt them to work on a new system, can't audit them. Free folks have always argued that a computer will never be free if there are binary blobs in there

(well: the last part is not really true, there is always a way to have a custom firmware, or make an audit, but the manufacturer will do that only for elite customers. Not for open source folks.)

“The two processors communicate over a set of interfaces we call the Interconnect: SPI carries the framebuffer to the MCU for display output”

Even with peripheral DMA this idea sounds terrifying.

It's a pretty normal thing to do for small LCD screens. Linux has had SPI framebuffer support via fbtft subsystem (in staging tree now, previously was out of tree) for well over a decade. It works quite well.

Is this their gateway to advertisement? Vendors pay to show up on your pulse?