Linux driver The default Linux driver is spi_bcm2708. SPI0 is disabled by default. To enable manually you must add dtparam=spi=on on /boot/config.txt file. To enable SPI1, you can use 1, 2 or 3 chip select lines, adding in each case: dtoverlay=spi1-1cs #1 chip select dtoverlay=spi1-2cs #2 chip select dtoverlay=spi1-3cs #3 chip select on /boot/config.txt file. The following information was valid fr