The closest is Rockchip's RK3288 which is found on some Chromebooks. Its GPU still relies on blobs, which is their main argument against it, but since that code

The closest is Rockchip's RK3288 which is found on some Chromebooks. Its GPU still relies on blobs, which is their main argument against it, but since that code isn't signed (unlike the ME firmware) at least it _can_ be replaced. Somebody is working on "liberating" the firmware side of Asus Chromebook Flip (mostly work to make it useful for non-Chrome OS situations), and I guess volunteers are welcome for the GPU side. (some ARM Mali)