Re: [iPAQ] SD Card protocol specs

On Thu, 2003-02-27 at 13:43, Jeff Sutherland wrote:
> On Thursday 27 February 2003 04:12 am, Philip Blundell wrote:
> > On Thu, 2003-02-27 at 09:01, Marc Baaden wrote:
> > > Just a thought, would it be possible and permitted for someone not having
> > > signed the NDA to reverse-engineer the binary Zaurus driver and write an
> > > open-source one based on the reverse-engineering ?
> >
> > Depends on the jurisdiction where the work was carried out. In the US,
> > I think this would almost certainly be prohibited by law. It might be
> > OK in Europe, though I think the SD Consortium would probably try to
> > make life miserable for anybody who did this.
> >
> > p.
>
> Why not just write a driver to support the MMC protocol?

There already is an MMC driver for iPAQ H3800, and we will write one for
H3900 in due course. The OpenZaurus guys have the additional handicap
that the MMC interface on SL5500 is implemented in a custom ASIC for
which documentation is difficult to obtain. On the SL5600 the PXA250
internal MMC controller is apparently used, so there should be no
problem.

However, an SD driver would still be preferable because MMC cards tend
not to be available in such high capacities as SD.

p.
Received on Thu Feb 27 2003 - 13:47:27 EST