Re: NOR damage problem

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

Hello Alexander,

On 4/1/25 13:56, Alexander Shiyan wrote:
> Hello.
> 
>>> Found NOR partition damage after use ubiformat.
>>> There is a NOR memory (256M) connected via atmel-qspi.
> ...
>> The messages above say that 64bytes were written which matches the
>> number of bytes that are corrupted here. Maybe this can be a starting
>> point where to look at. Also the 64 bytes were written without the block
>> being erased. You could erase the block manually before calling
>> ubiformat, then you could see what the code really tried to write here.
>>
>> Just an idea: Is the size of your Flash correctly detected? When writing
>> past the device then the write operations could roll over to the first
>> block.
> 
> The problem is more complex than I thought...
> ATMEL QSPI only works in the mapping range up to 128 MB,
> larger chips will not work correctly.
> To solve this, we will have to update the spi-mem and atmel-quadspi
> drivers and add spi_transfer() support to the driver (and in the kernel too).

The spi-mem core is also limited to 1 bit currently. Just saying in case
you want to fix that as well. I haven't been successful to talk Oleksij
into it. :D

Cheers,
Ahmad

> 
> Thanks!
> 
> 

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