[2/2] mtd: spi-nor: unlock global block protection on sst26vf064b
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Message ID 20190823160452.14905-3-tudor.ambarus@microchip.com
State Changes Requested
Delegated to: Ambarus Tudor
Headers show
Series
  • mtd: spi-nor: add Global Block Unlock support
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Commit Message

Ambarus Tudor Aug. 23, 2019, 4:05 p.m. UTC
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(-)

Patch
diff mbox series

diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 08ae45fdc44a..5c18fd0c7fd2 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -2398,7 +2398,9 @@  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) },