| From | <> | Subject | [PATCH 23/23] mtd: spi-nor: Unlock global block protection on sst26vf064b | Date | Tue, 17 Sep 2019 15:55:54 +0000 |
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From: Tudor Ambarus <tudor.ambarus@microchip.com>
To avoid inadvertent writes during power-up, sst26vf064b is write-protected by default after a power-on reset cycle. Unlock the serial flash memory by using the Global Block Protection Unlock command - it offers a single command cycle that unlocks the entire memory array.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> --- drivers/mtd/spi-nor/spi-nor.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 19556a9dd3fa..19919c9c1bd8 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -2442,7 +2442,9 @@ static const struct flash_info spi_nor_ids[] = { { "sst25wf080", INFO(0xbf2505, 0, 64 * 1024, 16, SECT_4K | SST_WRITE) }, { "sst26wf016b", INFO(0xbf2651, 0, 64 * 1024, 32, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, - { "sst26vf064b", INFO(0xbf2643, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { "sst26vf064b", INFO(0xbf2643, 0, 64 * 1024, 128, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | + UNLOCK_GLOBAL_BLOCK) }, /* ST Microelectronics -- newer production may have feature updates */ { "m25p05", INFO(0x202010, 0, 32 * 1024, 2, 0) }, -- 2.9.5
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