On Wednesday 17 June 2009 17:12:38 ext Janusz Krzysztofik wrote:
Janusz Krzysztofik wrote:
After all, it is more and more likely that the problem is not dma, but mcbsp just not shifting any data for some mysterious reason.
I finally did what I should have already done before: learned about dynamic debugging, turned it on and probably got the answer from omap_msbsp_dump_reg(): all mcbsp1 register read operations returned 0xffff. So it looks like I simply get no acccess to mcbsp1 at all. Now I wonder if I can close this thread with a conclusion that mcbsp1 on opam15xx is simply not yet supported by the mainline kernel that I have based my work on.
Hmmm, this is quite unexpected. Can you access to mcbsp2 or 3 registers, or only the mcbsp1 registers are not accessible? One thing that I have noticed is that the McBSP1 (and 3) is under the DSP Public Peripherals, while McBSP2 is under MPU Public Peripherals (in OMAP1510). I have to check it further what this actually means...
Thanks, Janusz