From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andre Schwarz Date: Mon, 15 Nov 2010 10:57:30 +0100 Subject: [U-Boot] [PATCH] mpc83xx: Make it boot again In-Reply-To: <20101112133139.06eba2a8@udp111988uds.am.freescale.net> References: <1288881912-4537-1-git-send-email-Joakim.Tjernlund@transmode.se> <63BE59A941660E44B1E66C95E0347C3C063666F1@az33exm25.fsl.freescale.net> <00FAD2B5-5DC5-412E-992D-D0BF056AC4BB@kernel.crashing.org> <20101112112206.1b4fc4f6@udp111988uds.am.freescale.net> <79C61200-A4DA-457C-9D2B-798D110218B7@kernel.crashing.org> <20101112133139.06eba2a8@udp111988uds.am.freescale.net> Message-ID: <4CE1040A.8010907@matrix-vision.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 11/12/2010 08:31 PM, Scott Wood wrote: > On Fri, 12 Nov 2010 13:26:17 -0600 > Kumar Gala wrote: > > >> On Nov 12, 2010, at 11:22 AM, Scott Wood wrote: >> >> >>> On Fri, 12 Nov 2010 09:58:53 -0600 >>> Kumar Gala wrote: >>> >>>> We only do the 'twi' for loads/in_beX not stores/out_beX. >>>> >>> Yes, and the readback is a load. >>> >> following the store with a load should be sufficient I dont think we need the twi in this case. >> > Do we ever need it, or is guarded+cache inhibited sufficient to > completely hold up execution of anything beyond the load? > Sorry for being insistent : Is there any explanation why this issue only came up on Jocke's MPC8321 (?) and my MPC8377 ? As mentioned here (http://lists.denx.de/pipermail/u-boot/2010-November/081459.html) there's still a mysterious issue which might have the same root cause. Again : USB is working fine under Linux - it's an U-Boot only issue. Is anybody willing to have a closer look - I'm completely stuck here. Regards, Andr? MATRIX VISION GmbH, Talstrasse 16, DE-71570 Oppenweiler Registergericht: Amtsgericht Stuttgart, HRB 271090 Geschaeftsfuehrer: Gerhard Thullner, Werner Armingeon, Uwe Furtner