Enabling SPI on RPi

I'm not exactly sure what SPI is but it needs to be enabled on my Raspberry Pi to be able to use a PiFace Digital interface - http://www.piface.org.uk/products/piface_digital/

It is enabled in Raspbian simply by selecting an option in a menu:-


If I can enable SPI I should be able to replace Raspbian with OpenWrt, which would be nice.

Simply add dtparam=spi=on to /boot/config.txt, install kmod-spi-bcm2835, kmod-spi-bitbang (and probably others) and do a reboot...


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