Q: Probing for devices > buswidth???

Eric W. Biederman ebiederman at lnxi.com
Tue Oct 9 02:50:09 EDT 2001

David Woodhouse <dwmw2 at infradead.org> writes:

> ebiederman at lnxi.com said:
> > Trying to understand some anomolous results I discovered that
> > gen_probe_newchip is looking for: 16 bit devices on an 8 bit bus. byte
> > interleaved 16 bit devices on a 16 bit bus. And some really bizare
> > things for a 32 bit bus.
> > Is there any good reason for doing it that way?
> What it's probing for is a 16-bit device in 8-bit mode. This is _different_ 
> to an 8-bit device :)

Just so I understand.  There are chips with a 16-bit interface that
you can put in a crippled mode such that they pretend use only an 8
bit bus.  But the id logic is the same as when the are on a 16-bit

I'm just trying to comprehend this weird situation.


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