diff mbox series

[v6,11/14] mtd: spi-nor: winbond: w25q256jvm: Init flash based on SFDP

Message ID 20211207140254.87681-12-tudor.ambarus@microchip.com (mailing list archive)
State New, archived
Headers show
Series mtd: spi-nor: Clean params init | expand

Commit Message

Tudor Ambarus Dec. 7, 2021, 2:02 p.m. UTC 
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 0xeb,
for erases SPINOR_OP_BE_4K 0x20, and for writes SPINOR_OP_PP 0x02.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---

root@sama5d2-xplained:~# cat /sys/devices/platform/ahb/ahb:apb/f0020000.spi/spi_master/spi1/spi1.0/spi-nor/jedec_id
ef7019
root@sama5d2-xplained:~# cat /sys/devices/platform/ahb/ahb:apb/f0020000.spi/spi_master/spi1/spi1.0/spi-nor/manufacturer
winbond
root@sama5d2-xplained:~# cat /sys/devices/platform/ahb/ahb:apb/f0020000.spi/spi_master/spi1/spi1.0/spi-nor/partname
w25q256jvm
root@sama5d2-xplained:~# cat /sys/devices/platform/ahb/ahb:apb/f0020000.spi/spi_master/spi1/spi1.0/spi-nor/sfdp > sfdp-w25q256jvm

xxd -p sfdp-w25q256jvm
53464450050100ff00050110800000ffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520fbffffffff0f44eb086b083b42bbfeffffffffff
0000ffff40eb0c200f5210d800003602a60082ea14d3e96376337a757a75
f7a2d55c19f74dffe970f9a5

sha1sum sfdp-w25q256jvm
1d9f526670a97553a648567e051e8f7723f7a73a  sfdp-w25q256jvm
 drivers/mtd/spi-nor/winbond.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 421509406368..a7573df0a62d 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -117,8 +117,7 @@  static const struct flash_info winbond_parts[] = {
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
 		.fixups = &w25q256_fixups },
 	{ "w25q256jvm", INFO(0xef7019, 0, 64 * 1024, 512)
-		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
-			      SPI_NOR_QUAD_READ) },
+		PARSE_SFDP },
 	{ "w25q256jw", INFO(0xef6019, 0, 64 * 1024, 512)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
 			      SPI_NOR_QUAD_READ) },