[PATCH v3 24/25] mtd: spi-nor: issi: is25lp256: Init flash based on SFDP

Tudor Ambarus tudor.ambarus at microchip.com
Fri Oct 29 10:26:32 PDT 2021


Get rid of the static initialization of the flash parameters and
init them when parsing SFDP.
Generated a 256 Kbyte random data and did an erase, write, read back
and compare test. The flash uses for reads SPINOR_OP_READ_1_4_4_4B 0xec,
for erases SPINOR_OP_BE_4K_4B 0x21, and for writes SPINOR_OP_PP_4B 0x12.

Signed-off-by: Tudor Ambarus <tudor.ambarus at microchip.com>
---
 drivers/mtd/spi-nor/issi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/spi-nor/issi.c b/drivers/mtd/spi-nor/issi.c
index b2abe8202143..3c5ce2c2c646 100644
--- a/drivers/mtd/spi-nor/issi.c
+++ b/drivers/mtd/spi-nor/issi.c
@@ -45,7 +45,7 @@ static const struct flash_info issi_parts[] = {
 	{ "is25lp128",  INFO(0x9d6018, 0, 64 * 1024, 256,
 			     SECT_4K | SPI_NOR_DUAL_READ) },
 	{ "is25lp256",  INFO(0x9d6019, 0, 64 * 1024, 512,
-			     SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+			     SPI_NOR_PARSE_SFDP |
 			     FIXUP_FLAGS(SPI_NOR_4B_OPCODES))
 		.fixups = &is25lp256_fixups },
 	{ "is25wp032",  INFO(0x9d7016, 0, 64 * 1024,  64,
-- 
2.25.1




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