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From: Juergen Beisert <jbe@pengutronix.de>
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Date: Mon, 23 Mar 2009 20:29:32 +0100
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Subject: Re: DOC2000 flash: Do I miss something?
Cc: Ravi Vasarla <ravi.vasarla@sasken.com>
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On Montag, 23. M=E4rz 2009, Ravi Vasarla wrote:
> Hi,
>
> Kindly check the DOC2000 driver which is available under  -> Device
> Drivers-> Memory Technology Devices (MTD)-> Memory Technology Device (MTD)
> support (MTD [=3Dm])-> NAND Flash Device Drivers (Which has recommanded t=
oo).
> The below error message due to the way old doc driver implemented.

What is the correct setup of this device to make it work?

I tried:

$ flash_eraseall /dev/mtd0
$ nandwrite -a /dev/mtd0 root.jffs2

$ mount -t jffs2 /dev/mtdblock0 /mnt
When I try to mount it, I get many of these messages:
[...]
CLEANMARKER node found at 0x003e4000 has totlen 0xc !=3D normal 0x0
CLEANMARKER node found at 0x003e8000 has totlen 0xc !=3D normal 0x0
CLEANMARKER node found at 0x003ec000 has totlen 0xc !=3D normal 0x0
CLEANMARKER node found at 0x003f0000 has totlen 0xc !=3D normal 0x0
CLEANMARKER node found at 0x003f4000 has totlen 0xc !=3D normal 0x0
CLEANMARKER node found at 0x003f8000 has totlen 0xc !=3D normal 0x0
[...]

But the mount seems successfull, as I can see the files and I can also modi=
fy=20
some text files in this filesystem. After unmount and reboot at the next=20
mount again I see many of these messages:
[...]
CLEANMARKER node found at 0x003fc000 has totlen 0xc !=3D normal 0x0
CLEANMARKER node found at 0x00400000 has totlen 0xc !=3D normal 0x0
CLEANMARKER node found at 0x00404000 has totlen 0xc !=3D normal 0x0
CLEANMARKER node found at 0x00408000 has totlen 0xc !=3D normal 0x0
CLEANMARKER node found at 0x0040c000 has totlen 0xc !=3D normal 0x0
CLEANMARKER node found at 0x00410000 has totlen 0xc !=3D normal 0x0
[...]

But now also these ones:
[...]
mtd->read(0x3a50 bytes from 0x4105b0) returned ECC error
mtd->read(0x1a14 bytes from 0x4125ec) returned ECC error
Empty flash at 0x004125e8 ends at 0x00412600
mtd->read(0x1cc bytes from 0x412834) returned ECC error
mtd->read(0x200 bytes from 0x412600) returned ECC error
mtd->read(0x33 bytes from 0x412800) returned ECC error

Device broken or setup wrong?

Regards,
Juergen

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