From: Tudor Ambarus <[email protected]> This is similar with what other nor flashes are doing by clearing the block protection bits from the status register: disable the write protection after a power-on reset cycle.
The Global Block-Protection Unlock command offers a single command cycle that unlocks the entire memory array. Prefer this method for higher throughput. Tested on the sst26vf064b flash using the atmel-quadspi driver. Tudor Ambarus (2): mtd: spi-nor: add Global Block Unlock support mtd: spi-nor: unlock global block protection on sst26vf064b drivers/mtd/spi-nor/spi-nor.c | 51 +++++++++++++++++++++++++++++++++++++++++-- include/linux/mtd/spi-nor.h | 1 + 2 files changed, 50 insertions(+), 2 deletions(-) -- 2.9.5
