Jan. 28, 2019
1:26 p.m.
Hi all, I'm writing a driver for an ePaper display, that will attach via GPIO. I've read the docs in Documentation/GPIO, and Documentation/devicetree/bindings/gpio. The ePaper itself just has a 34pin flat-flex cable, so people will have to use an adapter board to convert to the GPIO headers for a given system. I'd appreciate advice on the best/canonical way to allow userspace to configure the pinout. I read the devicetree docs, but my interpretation was that was more for a somewhat static configuration to be provided by device vendors. Many thanks, Laurence