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SubjectRe: Fwd: anyone can help me about nand_get_flash_type
On 09/06/2010 11:37 PM, Tony Wan wrote:
> Anyone can help me with this problem? even some ideas how to debug and
> find the problem? Thank you!
> ---------- Forwarded message ----------
> From: Tony Wan<>
> Date: Wed, Aug 25, 2010 at 5:36 PM
> Subject: anyone can help me about nand_get_flash_type
> To:
> Hi there,
> I got an ARM device from Marvell with a NAND rom, running Linux
> These days I'm working on upgrading the kernel to
> After the upgrade, all devices work well except the NAND rom. I found
> it's because that the device and manufacturer IDs cannot be retrieved
> correctly in nand_get_flash_type. In, the IDs can be
> retrieved as expected; but in, the IDs always be 0, which
> leads to an error in nand_scan.
> I'm a definitely newbie with MTD, and currently have no idea about the
> problem. Except IO_ADDR_R& IO_ADDR_W are remapped to different
> addresses, I can't find any differences between the 2 versions from
> the system log -- may it be the reason? Anyone can give me some tips
> about this problem -- how to fix it or how to debug? Any suggestions
> will be appreciated.
> --
> Best regards,
> Tony Wan

in this case if 2.6.22 worked and 2.6.31 is broken Id suggest bisecting
this, since you have a good/bad starting point.

Justin P. Mattock

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