Re: MMC drivers for 2.6 collie

[John Lenz <lenz@cs.wisc.edu>]

On Sun, 2006-05-14 at 18:24 +0200, Pavel Machek wrote:
> Hi!
> 
> > > I've tried searching sharp patches for MMC support, but could not find
> > > it. Or should MMC_ARMMMCI work on collie?
> > 
> > Sharp's 2.4 MMC/SD drivers were binary only for all Zaurus models. Since
> > we have documentation on the PXA, a 2.6 driver exists and works for all
> > PXA models as we could guess the power controls and GPIOs. Collie
> > (SA1100 based) used some kind of SPI interface through the LOCOMO chip
> > (as far as I know) which we have no documentation on.
> 
> I thought we had completely open-source version at one point?

No, not for the MMC on collie.  At least, the patch to the 2.4 kernel
which I based my 2.6 code on did not have any MMC parts, and the
openzaurus distro at the time still included the binary module in the
rom.  

IIRC, Chris Larson signed a NDA and got the specs for the MMC device on
collie to develop it for 2.6, but I don't think anything ever came of
it.  I also might be remembering he signed a NDA for some other
component, but I think it was the MMC device.  Also, the poodle and
collie used different device controllers, so the work will not transfer
over.  :(

John

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