From: Ralf Baechle <ralf@oss.sgi.com>
To: Keith Owens <kaos@melbourne.sgi.com>
Cc: Linux on MIPS <linux-mips@oss.sgi.com>
Subject: Re: sgiserial.c
Date: Tue, 10 Oct 2000 05:45:06 +0200 [thread overview]
Message-ID: <20001010054506.F25504@bacchus.dhis.org> (raw)
In-Reply-To: <3417.971147957@kao2.melbourne.sgi.com>; from kaos@melbourne.sgi.com on Tue, Oct 10, 2000 at 02:19:17PM +1100
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
next prev parent reply other threads:[~2000-10-10 3:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-10-09 20:32 sgiserial.c Gordon McNutt
2000-10-10 3:13 ` sgiserial.c Marcus Herbert
2000-10-10 3:19 ` sgiserial.c Keith Owens
2000-10-10 3:45 ` Ralf Baechle [this message]
2000-10-10 9:41 ` sgiserial.c Alan Cox
2000-10-10 9:41 ` sgiserial.c Alan Cox
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