Re: [PATCH v3 2/2] mtd: spi-nor: core: avoid odd length/address writes in 8D-8D-8D mode

From: Pratyush Yadav
Date: Wed Aug 13 2025 - 08:48:10 EST


Hi Luke,

On Wed, Aug 13 2025, Luke Wang wrote:

> Gentle ping on this, are there any comments or issues?

I plan to review it this in the next couple weeks (hopefully this one).

>>
>> On Octal DTR capable flashes like Micron Xcella the writes cannot start
>> or end at an odd address in Octal DTR mode. Extra 0xff bytes need to be
>> appended or prepended to make sure the start address and end address are
>> even. 0xff is used because on NOR flashes a program operation can only
>> flip bits from 1 to 0, not the other way round. 0 to 1 flip needs to
>> happen via erases.
>>
>> Signed-off-by: Pratyush Yadav <p.yadav@xxxxxx>
>> Reviewed-by: Michael Walle <michael@xxxxxxxx>
>> Signed-off-by: Luke Wang <ziniu.wang_1@xxxxxxx>
[...]

--
Regards,
Pratyush Yadav