On Wed, Feb 20, 2013 at 1:01 PM, NeonJohn <jgd@neon-john.com> wrote:
Greetings,
I just discovered this list while beating my head against the wall (kernel noobs do that a lot, I hear). I thought I'd introduce myself.
I'm mainly an EE but with fairly extensive Unix and Linux user space coding and with embedded system programming. I'm a newborn infant when it comes to the kernel.
I'm working with the BeagleBone and Robert Nelson's Angstrom derivative
https://github.com/RobertCNelson/stable-kernel
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?
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? 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?
Thanks, 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
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