Re: sgiserial.c

[Ralf Baechle <ralf@oss.sgi.com>]

On Tue, Oct 10, 2000 at 02:19:17PM +1100, Keith Owens wrote:

> >     The serial ports of all SGI systems support several standard rates
> >     up through 38400 bps (see termio(7) for these standard rates).
> >     The serial ports on O2, OCTANE, Origin2000, Onyx2 and Origin200
> >     systems also support
> >     
> >                                31250   57600
> >                                76800   115200
> 
> FWIW, O2's may be rated at 115200 but I can kill my O2 by feeding it
> the output from a Linux serial console at 115200.  No diagnostics, just
> a solid machine hang.

The Origin's IOC3 16550 can go even higher rates at low interrupt load
due to it's higher crystal frequency and a NIC-like DMA descriptors.
We just don't do it yet in the Linux driver ...

  Ralf