[PATCH v2 2/6] mtd: spi-nor: add erase die (chip) capability

[Fabio Estevam]

Hi Tudor,

On 01/11/2023 14:27, Tudor Ambarus wrote:

> Thanks, Fabio. I can't tell what's happening and it's getting late 
> here.
> Die erase does not execute if either of the status register BP bits are
> set to 1 (some sectors are locked), but that shouldn't be the case I
> guess as you could erase the entire flash before. So maybe dump SR/FSR

Correct, I could erase the entire flash before.

> before and after the chip erase op. Other idea is to dump the 
> spi_mem_op

SR is the same before and after the chip erase operation.

I haven't dumped FSR as I didn't find an easy way to do it from the 
core.

> fields, after spi_nor_spimem_setup_op() is called, maybe I got 
> something
> wrong there, but on a short look it seems fine.
> 
> I'll re-read this tomorrow. Cheers,

Not sure if it helps to give some ideas, but there was an old submission
for die erase support:

http://www.infradead.org/pipermail/linux-mtd/2016-October/069960.html

http://www.infradead.org/pipermail/linux-mtd/2016-October/069961.html

http://www.infradead.org/pipermail/linux-mtd/2016-October/069959.html

Thanks for your help.