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Date: Mon, 20 Aug 2018 09:46:30 +0200
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Kostya Porotchkin <kostap@marvell.com>
Cc: Daniel Mack <daniel@zonque.org>, Haojian Zhuang
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Subject: Re: [EXT] Re: nand speed test
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Hi Kostya,

Kostya Porotchkin <kostap@marvell.com> wrote on Sun, 19 Aug 2018
14:12:16 +0000:

> Hi, Miguel,
>=20
> We clearly have a problem with BBT on this 8K-page NAND.
> The Linux driver is unable to find BBT after reboot, even if it reports t=
hat the new table was written upon previous boot.
> It looks like the u-boot also lost the BBT information after reboot.
> So something is not yet working well with this 4GB device.
>=20
> Marvell>> nand info =20
>=20
> Device 0: nand0, sector size 1024 KiB
>   Page size       8192 b
>   OOB size         448 b
>   Erase size   1048576 b
>   subpagesize     8192 b
>   options     0x     200
>   bbt options 0x   a0000
> Marvell>> nand bad =20
>=20
> Device 0 bad blocks:
>   ff800000
>   ff900000
>   ffa00000
>   ffb00000
>   ffc00000
>   ffd00000
>   ffe00000
>   fff00000

This enlarging list is very likely to show a mismatch between U-Boot
and Linux ECC configuration, you should check that first. It will
probably explain why BBT is not recognized.

Thanks,
Miqu=C3=A8l