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Subject[PATCH v2 3/3] mtd: spi-nor: add support for Microchip SST26 QSPI flash memories
Date
The flash memories are write-protected by default at power-on and
must be unlocked first, before being erased, then programmed.

The erase block sizes are not uniform. The memory layout is uniform
just for the 4K sector blocks.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
drivers/mtd/spi-nor/spi-nor.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index ba0fd8b..dc8757e 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -1164,10 +1164,30 @@ static const struct flash_info spi_nor_ids[] = {
{ "sst25wf040", INFO(0xbf2504, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) },
{ "sst25wf080", INFO(0xbf2505, 0, 64 * 1024, 16, SECT_4K | SST_WRITE) },
{
+ "sst26vf016b", INFO(0xbf2641, 0, 64 * 1024, 32,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ UNLOCK_GLOBAL_BLOCK)
+ },
+ {
+ "sst26vf032b", INFO(0xbf2642, 0, 64 * 1024, 64,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ UNLOCK_GLOBAL_BLOCK)
+ },
+ {
"sst26vf064b", INFO(0xbf2643, 0, 64 * 1024, 128,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
UNLOCK_GLOBAL_BLOCK)
},
+ {
+ "sst26vf040b", INFO(0xbf2654, 0, 64 * 1024, 8,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ UNLOCK_GLOBAL_BLOCK)
+ },
+ {
+ "sst26vf080b", INFO(0xbf2658, 0, 64 * 1024, 16,
+ 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) },
--
2.9.4
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