On Sun, Oct 06, 2019 at 12:29:18AM +0200, Luca Ceresoli wrote: > BTW I guess having an FPGA external to the SoC connected via SPI or I2C > is not uncommon. Am I wrong? Not uncommon at all, look at the drivers/fpga/ subsystem for a standard way to access those types of chips with a standard api. greg k-h