Re: [Gumstix-users] SPI output

[Ned Forrester <nforrester-/d+BM93fTQY@public.gmane.org>]

Pranav Sanghadia wrote:
> Hi Ned,
> 
> Thanks, I was stuck with Gumstix boot issue. But now the Gumstix is working
> again.
> 
> I am taking a look at spidev documentation, looks like spidev is the way to
> go.

One other note.  For spidev to work with pxa2xx_spi in DMA mode, you
will have to wait for a patch to pxa2xx_spi that I am working on.  There
is a problem with DMA when using the same buffer for tx and rx, as
spidev does.  It should still work as-is in PIO mode.

> I am using buildroot latest version, do you know how to compile just one
> kernel module say spidev without compiling whole kernel code?

Not really.  Once you have compiled the whole kernel, if you then change
one module, only that module (and maybe a few other minor things) will
get re-compiled.

-- 
Ned Forrester                                       nforrester-/d+BM93fTQY@public.gmane.org
Oceanographic Systems Lab                                  508-289-2226
Applied Ocean Physics and Engineering Dept.
Woods Hole Oceanographic Institution          Woods Hole, MA 02543, USA
http://www.whoi.edu/sbl/liteSite.do?litesiteid=7212
http://www.whoi.edu/hpb/Site.do?id=1532
http://www.whoi.edu/page.do?pid=10079


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