Commit 1c513c98 authored by Tudor Ambarus's avatar Tudor Ambarus
Browse files

mtd: spi-nor: winbond: w25q256jvm: Init flash based on SFDP 



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: default avatarTudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20211207140254.87681-12-tudor.ambarus@microchip.com
parent b7ed1a37

drivers/mtd/spi-nor/winbond.c

+1 −2
Original line number Diff line number Diff line
@@ -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) },