lanana: Add major/minor entries for PPC QE UART devices
Dan Malek
dan at embeddedalley.com
Thu Mar 1 04:27:06 EST 2007
On Feb 28, 2007, at 12:04 PM, Timur Tabi wrote:
> ... However, ttyCPM0 is currently assigned to 46, and device 50 is
> an Altix serial card. The only way to give the CPM 6 or 8 slots
> without moving it is to overlap the Altix card.
Then, this is currently broken in all cases
and needs to be fixed since the CPM/CPM2
could have up to six UART ports.
> Now I don't know anything about the Altix card, so I don't know if
> it's possible to use that card on a system with a CPM or a QE. If
> it isn't, then I don't know if overlapping minor numbers is still a
> problem.
I don't think that would be a problem, and I'd like the
CPM/QE to share devices because it makes the
software distributions common to all Freescale
embedded processors.
> If we move CPM/QE to 192, then I can change the CPM device driver
> to reflect that, but I don't know what that means for older kernels.
That would be bad. It has nothing to do with the
kernel, but we have finally survived the distribution
updates to ttyCPM, and I don't want to go through
that again just because of QE.
Thanks.
-- Dan
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