From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 28 Jun 2002 10:59:08 +1000 From: David Gibson To: Scott Anderson Cc: Tom Rini , Armin Kuster , linuxppc-embedded@lists.linuxppc.org, Paul Mackerras Subject: Re: Trivial cleanup in ocp_uart.c Message-ID: <20020628005908.GC11095@zax> References: <20020620073440.GC20689@zax> <20020620155026.GE16052@opus.bloom.county> <20020621005216.GH20689@zax> <20020621143903.GO16052@opus.bloom.county> <20020624074019.GA9087@zax> <3D19F965.86668872@mvista.com> <20020627004144.GR9087@zax> <3D1B3C0D.9B36EB42@mvista.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <3D1B3C0D.9B36EB42@mvista.com> Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: 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. -- David Gibson | For every complex problem there is a david@gibson.dropbear.id.au | solution which is simple, neat and | wrong. -- H.L. Mencken http://www.ozlabs.org/people/dgibson ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/