Re: [EXT] Re: nand speed test

[Miquel Raynal <miquel.raynal@xxxxxxxxxxx>]

Hi Kostya,

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

> Hi, Miguel,
> 
> 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 that 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.
> 
> Marvell>> nand info  
> 
> 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  
> 
> 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,
Miquèl

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