mtd: spi-nor: micron-st: Enable die erase support for MT35XU02GCBA

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The MT35XU02GCBA flash device does not support chip erase according
to its datasheet, but supports die erase. The existing code had a TODO
comment noting that the SPI_NOR_IO_MODE_EN_VOLATILE flag probably needs
to be enabled and the driver implementation needs to be converted to
use die erase.

This patch enables the SPI_NOR_IO_MODE_EN_VOLATILE flag and adds the
mt35_two_die_fixups to the MT35XU02GCBA entry, which includes the
micron_st_nor_two_die_late_init() function that sets up die erase
support.

With these changes, the flash device can properly use die erase
operations instead of chip erase.

Signed-off-by: Haoyu Lu <hechushiguitu666@gmail.com>
Reviewed-by: Pratyush Yadav (Google) <pratyush@kernel.org>
[pratyush@kernel.org: drop the whole comment instead of just the TODO line]
Signed-off-by: Pratyush Yadav (Google) <pratyush@kernel.org>

...

This commit is contained in:

Haoyu Lu 2026-03-31 17:53:51 +08:00 • committed by Pratyush Yadav (Google)

parent 760e8c382c

commit cf6788aed0

1 changed files with 4 additions and 13 deletions

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drivers/mtd/spi-nor/micron-st.c

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