Re: [alsa-devel] Fwd: [PATCH 1/1] SPI : spi-pxa2xx : fix spi init of WM510205 codec via ACPI (resend)

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On Mon, Sep 07, 2015 at 09:58:22AM +0200, Christian Hartmann wrote:
> Hello,
> 
> 2015-09-04 16:34 GMT+02:00 Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>:
> > Not entirely unexpected I guess, but certainly my gut feel here
> > is that this is a problem with the chip selects. I guess really
> > trying to find any available documentation on the AP/SPI and
> what do you mean with AP ?
> 
> I have googled and found some technical datasheets and
> developer documentation about the marvell pxa27 under this link/webpage
> http://www.marvell.com/application-processors/pxa-family/
> 
> I also asked lenovo about datasheets (not the short brief productsheet) to get
> facts about it. But again,  I do not think that lenovo will ever
> support me in this case.
> if I got some datasheets and if its not against laws etc I will report it here.
> 
> > tearing apart the SPI driver are the next steps from here. But
> > afraid I don't really have any great ideas for diving much
> > deeper. I will try to chase the Windows guys here again and see
> That would be nice, hope they got some glues.
> 
> > if I can gain any clues from them but I don't really know at what
> > level these things are abstracted in Windows and thus if they can
> > really help us much.

Ok no major hints from them, they do have a 10 inch version of
the same tablet lying around though so I will get them to post
that up and have a look see if I can figure anything out.

If you had anywhere I can pull in what you have done already that
would be handy.

Thanks,
Charles
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