On Thu, Jul 12, 2012 at 07:17:59AM -0600, Gary Thomas wrote: > On 2012-07-12 07:15, Tom Rini wrote: > >On Thu, Jul 12, 2012 at 07:06:02AM -0600, Gary Thomas wrote: > >>On 2012-07-12 03:30, Tom Rini wrote: > >>>On Thu, Jul 12, 2012 at 02:20:18AM -0700, Tom Rini wrote: > >>>>On Wed, Jul 11, 2012 at 07:08:50AM -0600, Gary Thomas wrote: > >>>> > >>>>>I just tried rev 211e47549b668c7cdd8658c0413a272f0d0495d4 (v2012.07-rc1) > >>>>>for my PandaBoard. Sadly, this is failing when I try to use the onboard > >>>>>ethernet (EHCI USB based) controller: > >>>> > >>>>Sorry for the late response, at a conference. This is a known problem > >>>>and we will either have this fixed soon (Ilya Yanok is working on a > >>>>series) or we will build-time disable dcache support on these boards and > >>>>fix this properly for the next release. > >>>> > >>>>In short, some cache clean-ups in ehci-hcd.c exposed other cache > >>>>problems on other platforms where our cache size is 64 not 32bytes. > >>> > >>>I take it back, I forgot omap4 is 32byte cache. With the fix that > >>>Tetsuyuki Kobayashi pointed you at (oh, and a Tested-by to that thread > >>>if you can), can you please do a little stress testing of USB, to make > >>>sure things are otherwise really happy (eth and perhaps a USB stick)? > >>>Thanks alot! > >>> > >> > >>Yesterday, this was working great. This morning, when I turned on > >>the board, it can no longer find anything on the USB bus - nothing at > >>all. This also applies to Linux when I boot from SD. I'm really > >>confused :-( > >> > >>If I boot the board using the 2011.06 U-Boot, all is happy again. > >>It looks like the USB HUB (USB3320) seems to be stuck in reset when > >>I use the latest U-Boot. > >> > >>Ever hear of any problems like this? > > > >How about if you turn the dcache off at run or build time? > > > > Sorry for being thick, but how do I do that? I don't see any > cache manipulation commands in 'help'
Looks like omap4 doesn't have CONFIG_CMD_CACHE set, so indeed you're missing 'dcache off' as a command. The other one is to add CONFIG_SYS_DCACHE_OFF to omap4_panda.h (or omap4_common.h) and rebuild. -- Tom _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot