How nordic-qspi driver handles dual die nor flash?

[Przemek Ostrowski]

I am using nrf5340 in my project. We had to replace flash memory but need a replacement with the same layout. So I am currently looking at w25q01jvzeim or w25q01jvzeiq.
The are both dual die chips. Is there out of box driver that allows to access full 128MB?

[Maria Gilje]

Hello,

As far as I know we don't have an out-of-the-box driver which enables access to the whole flash memory. It should be possible to make the necessary modifications to access it though.

Start by looking into the Kconfig symbols CONFIG_SPI_NOR_FLASH_LAYOUT_PAGE_SIZE and CONFIG_FS_FATFS_MAX_SS.

Also, make sure that the partitions related to external flash are large enough to handle more than 128MB.

Best regards,

Maria