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From: Scott Wood <scottwood@freescale.com>
To: Felix Radensky <felix@embedded-sol.com>
Cc: "linuxppc-dev@ozlabs.org" <linuxppc-dev@ozlabs.org>,
	"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
	Adrian Hunter <adrian.hunter@nokia.com>
Subject: Re: UBIFS problem on MPC8536DS
Date: Thu, 15 Oct 2009 15:07:54 -0500	[thread overview]
Message-ID: <4AD7811A.6040501@freescale.com> (raw)
In-Reply-To: <4AD614E4.6030005@freescale.com>

Scott Wood wrote:
> Felix Radensky wrote:
>> Yes, NAND and NOR are on the same local bus controller.
>>
>> Maybe powerpc folks can provide some insight here.
>> Is it possible that simultaneous access to NOR and NAND
>> on MPC8536 can result in NAND timeouts ?
> 
> I've heard other reports of such problems with eLBC, but was unable to 
> reproduce it myself last time I tried.  Could you reduce this down to a 
> minimal set of specific reproduction instructions (e.g. eliminate UBI if 
> possible, or else explain how to set up UBI)?

OK, I was able to reproduce the problem on mpc8572 simply by sticking a 
read to NOR flash inside fsl_elbc_run_command -- I'm not sure what 
happened last time I tried.

I suppose we'll need a special NOR mapping driver that does some sync 
with the NAND driver.

-Scott

  parent reply	other threads:[~2009-10-15 20:07 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-14 10:54 UBIFS problem on MPC8536DS Felix Radensky
2009-10-14 12:36 ` Adrian Hunter
2009-10-14 13:02   ` Felix Radensky
2009-10-14 13:21   ` Felix Radensky
2009-10-14 16:44     ` Adrian Hunter
2009-10-14 17:48       ` Felix Radensky
2009-10-14 18:13         ` Scott Wood
2009-10-14 20:12           ` Felix Radensky
2009-10-15 20:07           ` Scott Wood [this message]
2009-10-16  5:01             ` Felix Radensky
2009-10-16 15:31               ` Scott Wood
2009-10-18  9:38                 ` Felix Radensky
2009-10-19 15:40                   ` Scott Wood
2009-10-19 19:39                     ` Felix Radensky
2009-10-19 19:47                       ` Scott Wood
2009-10-19 20:19                         ` Felix Radensky
2009-10-20 15:30                         ` Felix Radensky
2009-10-22  8:20                 ` Felix Radensky
2009-10-22 16:07                   ` Scott Wood
2009-10-15  9:54 ` Norbert van Bolhuis
2009-10-15 10:45   ` MPC5121 CAN and USB Kári Davíðsson
2009-10-15 11:20     ` Paul Gibson
2009-10-15 11:36       ` Kári Davíðsson
2009-10-15 18:30         ` Wolfgang Denk
2009-10-15 23:03           ` Paul Gibson
2009-10-15 23:10             ` Wolfgang Denk
2009-10-19  6:46               ` David Jander
2009-10-16 13:53           ` Kári Davíðsson
2009-10-15 12:49   ` UBIFS problem on MPC8536DS Felix Radensky

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