On 02/20/2013 09:51 PM, anish singh wrote: >> I intend to embed the BB in our new product if I can solve a small >> problem. The BB has 2 SPI ports, 1 with 1 chip select and the other >> with 2. Only one port is supported in the standard kernel. I found >> some info that guided me into activating the new port and having all >> three devices enumerated in /dev. > Which three devices? Not that it matters but a 1 MS/S A/D converter, a DDS synthesizer and a bit of an FPGA that fans out one word of data to 16 control lines. >> >> What I have not yet been able to do is figure out how to enable that >> second chip select line. So my first question is, where do I start > What does this second chip select line does? Pick one of the three functions above. >> looking for the existing code? I'm hoping that I'll be lucky enough to >> reuse that code, changing a bit or two in the CPU register. > Can you show us the schematic? No, it's still just a pencil sketch. But I don't need a completed schematic to know that I need 3 SPI channels and the Bone only has one enabled by default. I've enabled the other port. Now I need to figure out how to enable that port's second chip select line. That was my question. Any suggestions? John -- John DeArmond Tellico Plains, Occupied TN http://www.fluxeon.com <-- THE source for induction heaters http://www.neon-john.com <-- email from here http://www.johndearmond.com <-- Best damned Blog on the net PGP key: wwwkeys.pgp.net: BCB68D77 _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
