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From: =?ISO-8859-1?Q?Eric_B=E9nard?= <eric@eukrea.com>
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To: alfred steele <alfred.jaquez@gmail.com>
Subject: Re: [PATCH] mxc_nand: i.MX35 hardware ECC fixups
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Hi Alfred,

alfred steele a écrit :
> I am having a issue with using nandwrite mtd util and it so happens
> that the nandwrite gets stuck at a particular block and the sonsole
> hangs there forever.
> We are using the mx27(mxc) with a large size page NAND(4k). The annd
> write suceeds for the kernel MTD parition. I am suspecting my NAND
> driver is somehow obsolete. How do i find out as to what could be the
> root cause of the problem?
are you sure the i.MX27's NAND controler supports 4k NAND ?

 From the Reference Manual is only support 512 & 2k :
The NFC interfaces standard NAND Flash devices to the IC and hides the 
complexities of accessing the NAND Flash. It provides a glueless 
interface to both 8-bit and 16-bit NAND Flash parts with page sizes
of 512 bytes or 2 Kbytes, and densities up to 64 Gbits per 2-Kbyte page 
size NAND Flash, and 8 Gbits per 512 byte page size NAND Flash.

There is no mention of 4k NAND and the NFC's RAM buffer is only 2k + 64 
which may be not enough for 4k NAND (the v2 NFC has 4k + 512 and support 
4k).

Eric