> On pi3 I'm running spi at 25Mhz (with dma). Incidentally, the original raspberry pi linux kernel only supported programmed i/o for spi. If the documentation for the bcm2835 SoC had been the usual "just read the linux driver" that most vendors consider adequate, we wouldn't have known how to speed up the spi with dma.
I wonder how well this ESPRESSOBin board and SoC will be documented? The kickstarter blurb lists a "host of operating systems" they say they will support, but they're all linux.
