It seems that it isn't officially supported (no official drivers) according to a similar question on this site. Do I have to write the driver myself or are there inofficial drivers that I can use?
Is Bit Banging possible in this scenario?
EDIT: The answers to those questions say it is not possible, however they are 2-3 years old. I couldn't find newer sources.
I also found this github repo. The project implements a slave driver for raspberry pi. The last commit however is three years old. Maybe someone has used it and can answer wether it works?