From: Tom Rini <trini@kernel.crashing.org>
To: Scott Anderson <scott_anderson@mvista.com>,
Armin Kuster <akuster@mvista.com>,
linuxppc-embedded@lists.linuxppc.org,
Paul Mackerras <paulus@samba.org>
Subject: Re: Trivial cleanup in ocp_uart.c
Date: Fri, 28 Jun 2002 07:57:10 -0700 [thread overview]
Message-ID: <20020628145710.GJ26734@opus.bloom.county> (raw)
In-Reply-To: <20020628005908.GC11095@zax>
On Fri, Jun 28, 2002 at 10:59:08AM +1000, David Gibson wrote:
> On Thu, Jun 27, 2002 at 09:23:41AM -0700, Scott Anderson wrote:
> >
> > David Gibson wrote:
> > > Eek, wibble. It still seems somewhat unlikely to me that you'd be
> > > changing the peripherals "on the fly" in a real life embedded
> > > application. Especially considering that reboots are likely to be
> > > much less of an issue on an embedded system than on a big server.
> >
> > My contrived example is a piece of test equipment that has an LCD
> > touchscreen and some high speed serial collection device. The LCD is
> > only used when interacting with the UI and the serial is only used
> > during a run when the LCD can be blank. By reprogramming part of the
> > FPGA on the fly you can squeeze more into a smaller FPGA. It appears
> > that Xilinx already has this working:
> > http://www.xilinx.com/xapp/xapp290.pdf
> >
> > I guess I wouldn't be quite so quick to dismiss this as unlikely, but
> > I must admit, my crystal ball is in the shop this week. It sure would
> > be nice to keep such things in mind as OCP is evolving, though.
>
> Heh, well, maybe. In any case this sounds more like a 2.5 and later
> timerframe thing to me, in which case integration into the unified
> device model should give us what's needed.
I think alot of what we're talking about for OCP is 2.5 fodder really.
Keep in mind that the current stuff has been well tested on ~13
different 4xx boards. Perhaps we should allow OCP to become semi solid
in 2_4_devel now so that we can move 4xx out to Marcelo and allow armin
to do some drastic changes in 2.5...
--
Tom Rini (TR1265)
http://gate.crashing.org/~trini/
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2002-06-28 14:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-20 7:34 Trivial cleanup in ocp_uart.c David Gibson
2002-06-20 15:50 ` Tom Rini
2002-06-21 0:52 ` David Gibson
2002-06-21 14:39 ` Tom Rini
2002-06-24 7:40 ` David Gibson
2002-06-26 17:27 ` Scott Anderson
2002-06-27 0:41 ` David Gibson
2002-06-27 16:23 ` Scott Anderson
2002-06-27 16:52 ` Kenneth Johansson
2002-06-28 0:59 ` David Gibson
2002-06-28 14:57 ` Tom Rini [this message]
2002-06-27 21:21 ` Armin Kuster
2002-06-27 20:30 ` Paul Mackerras
2002-06-27 21:12 ` Kenneth Johansson
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