Re: Kernel booting on serial console ... crawling

[Robert Kaiser]

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Hi Robert,

Am Freitag,  9. November 2001 13:27 schrieben Sie:
> On Fri, 9 Nov 2001, Robert Kaiser wrote:
> > Is this an AMD Elan's built-in serial port, perchance ?
>
> I got a patch for the Elan's serial port from Jason Sodergren some days
> ago, but it's not clear to me what exactly the problem is with this port.
> I'm using the serial console on a DIL/Net-PC without any problems so far.
> Perhaps it might be a good idea to join forces and try to get a patch for
> the Elan series into the main kernel?
>
> However, my current affords can be found on
>
>   http://www.schwebel.de/software/dnp/index_en.html
>
> This currently implements a new CPU configuration parameter and a fix for
> the clock on the Elan CPUs.

This is interesting, I was not aware of the different clock frequency issue.

Anyway, the patch I am using to fix the crawling console output symptom on 
the Elan is entirely different (see attachment). It was originally posted by
Anders Larsen <[e-mail]> and we have been using
it with good success in our embedded Linux product for quite a while now.
The comments in the source describe the problem. Interestingly, even the
latest AMD Elan product (SC520) seems to have this problem too.

Rob

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Robert Kaiser                         email: [e-mail]
SYSGO RTS GmbH
Am Pfaffenstein 14                    phone: [phone]
D-55270 Klein-Winternheim / Germany   fax:   [phone]

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