From: Vikram Narayanan <vikram186@gmail.com>
To: Huang Shijie <b32955@freescale.com>
Cc: Stefan Roese <sr@denx.de>, linux-mtd@lists.infradead.org
Subject: Re: mtd_oobtest fails with GPMI-NAND
Date: Mon, 13 May 2013 22:21:58 +0530 [thread overview]
Message-ID: <51911A2E.1060903@gmail.com> (raw)
In-Reply-To: <5190ABF0.10501@freescale.com>
Hello Huang,
On 5/13/2013 2:31 PM, Huang Shijie wrote:
>>
>> Huang, is this to be expected? How does this look on one of your
>> officially "supported" imx6 boards with NAND support?
>>
> I suggest you do not use the mtd_nandbiterrs.ko. It will call the
> mtd_write_oob() which will definitely lead to the
> -EBADMSG (-74) error.
>
> The mtd_write_oob() in mtd_nandbiterrs.ko writes a whole page without
> enabling the BCH to do the hardware ECC.
> But mtd_read() in mtd_nandbiterrs.ko DOES do the hardware ECC by the BCH.
> It's normal that you meet -74.
I wonder if this has something to do with the fake
"struct nand_ecclayout" defined in
<drivers/mtd/nand/gpmi-nand/gpmi-nand.c>?
Could you please explain on what is the technical restriction for not
providing a _sane_ ecclayout structure, so that the mtd_tests run happily?
Regards,
Vikram
next prev parent reply other threads:[~2013-05-13 16:52 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-18 16:52 mtd_oobtest fails with GPMI-NAND Vikram Narayanan
2013-01-21 2:12 ` Huang Shijie
2013-01-28 2:39 ` Vikram Narayanan
2013-01-28 3:20 ` Huang Shijie
2013-01-28 17:04 ` Vikram Narayanan
2013-01-29 2:06 ` Huang Shijie
2013-01-29 2:26 ` Vikram Narayanan
2013-01-29 2:36 ` Huang Shijie
2013-01-29 16:28 ` Vikram Narayanan
2013-01-30 2:27 ` Huang Shijie
2013-02-02 6:41 ` Vikram Narayanan
2013-02-02 7:42 ` Huang Shijie
2013-02-02 7:46 ` Huang Shijie
2013-05-08 14:33 ` Stefan Roese
2013-05-09 12:30 ` Vikram Narayanan
2013-05-10 6:20 ` Stefan Roese
2013-05-12 12:10 ` Vikram Narayanan
2013-05-12 15:09 ` Stefan Roese
2013-05-13 16:38 ` Vikram Narayanan
2013-05-13 2:51 ` Huang Shijie
2013-05-13 8:01 ` Stefan Roese
2013-05-13 9:01 ` Huang Shijie
2013-05-13 9:22 ` Stefan Roese
2013-05-13 9:34 ` Huang Shijie
2013-05-13 10:02 ` Stefan Roese
2013-05-14 2:09 ` Huang Shijie
2013-05-14 2:11 ` Huang Shijie
2013-05-13 16:51 ` Vikram Narayanan [this message]
2013-05-14 2:23 ` Huang Shijie
2013-05-14 2:33 ` Vikram Narayanan
2013-05-14 2:47 ` Huang Shijie
2013-05-13 16:43 ` Vikram Narayanan
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