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Date: Sun, 18 Oct 2009 11:38:13 +0200
From: Felix Radensky <felix@embedded-sol.com>
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To: Scott Wood <scottwood@freescale.com>
Subject: Re: UBIFS problem on MPC8536DS
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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 may try implementing the NOR mapping driver you were talking about.

Thanks.

Felix.