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: Mon, 19 Oct 2009 10:40:02 -0500 [thread overview]
Message-ID: <20091019154002.GC19074@loki.buserror.net> (raw)
In-Reply-To: <4ADAE205.7070106@embedded-sol.com>
On Sun, Oct 18, 2009 at 11:38:13AM +0200, Felix Radensky wrote:
> Hi, Scott
>
> Scott Wood wrote:
>> On Fri, Oct 16, 2009 at 07:01:43AM +0200, Felix Radensky wrote:
>>> Thanks for confirmation. So the real problem is eLBC ?
>>> What happens if I access other devices on eLBC (e.g. FPGA)
>>> simultaneously with NAND or NOR ?
>>
>> AFAICT, the problem is NAND being accessed simultaneously with anything else
>> on the eLBC (at least GPCM -- not sure about UPM). Instead of delaying the
>> memory-like transaction until the NAND special operation has completed, it
>> seems to just abort the NAND operation.
>>
>> eLBC can't really tell the difference whether you've got NOR or FPGA hooked
>> up to a GPCM chip select, so the problem should still apply.
>>
>
> Can you please provide some code example of synchronizing GPCM and NAND ?
I don't have any. It's something that would have to be written.
-Scott
next prev parent reply other threads:[~2009-10-19 15:40 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
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 [this message]
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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