From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: From: Kumar Gala To: David Gibson In-Reply-To: <20080205024049.GC28846@localhost.localdomain> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Mime-Version: 1.0 (Apple Message framework v915) Subject: Re: [PATCH 2/10] sbc8560: Add v1 device tree source for Wind River SBC8560 board Date: Tue, 5 Feb 2008 09:44:23 -0600 References: <7107e511a0f989ad55335855fa0f241f09eff52f.1201217172.git.paul.gortmaker@windriver.com> <20080201075408.GC18684@localhost.localdomain> <20080205024049.GC28846@localhost.localdomain> Cc: Paul Gortmaker , linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Feb 4, 2008, at 8:40 PM, David Gibson wrote: > On Fri, Feb 01, 2008 at 08:46:32AM -0600, Kumar Gala wrote: >> >> On Feb 1, 2008, at 1:54 AM, David Gibson wrote: >> >>> On Thu, Jan 24, 2008 at 06:41:24PM -0500, Paul Gortmaker wrote: > [snip] >>>> + epld@5,0 { >>> >>> I'm not entirely convinced on this two-level representation. I >>> think >>> the FSL people need to get together and define a binding (or set of >>> bindings) for their various chipselect style external bus bridges. >> >> It seems reasonable if you had a FPGA off of the localbus to have a >> two level representation. One for the localbus controller on the FSL >> part and the child to describe the FPGA. >> >> What are you expecting beyond what we have today? I guess I'm asking >> what's missing from the localbus nodes we have? > > Sorry, I was probably misleading. All I really meant is that I don't > know enough about these FSL bus bridge arrangements to assess if this > representation is the most sensible one. I'm presuming that this > chipselect bridge unit is a more-or-less standard ASIC appearing on > lots of the FSL chips, so it would be nice to have a standard binding > for them, as we do for the roughly-equivalent EBC bridge on 4xx. Is there a writeup for EBC? I'll take a look at it and see if it makes senses for the freescale 'localbus'. - k