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According to the datasheet for Micron n25q256a (N25Q256A13ESF40F) 4-byte addressing mode should be entered as follows: <quote> To enter or exit the 4-byte address mode, the WRITE ENABLE command must be executed to set the write enable latch bit to 1. (Note: The WRITE ENABLE command must NOT be executed on the N25Q256A83ESF40x and N25Q256A83E1240x devices.) S# must be driven LOW. The effect of the command is immediate; after the command has been executed, the write enable latch bit is cleared to 0. </quote> Micron's portable way to perform this for all types of Micron flash is to first issue a write enable, then switch the addressing mode followed by a write disable to avoid leaving the flash in a write- able state. Signed-off-by: Elie De Brauwer <eliedebrauwer@email.com> [Brian: reworked a bit] Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> |
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| .. | ||
| chips | ||
| devices | ||
| lpddr | ||
| maps | ||
| nand | ||
| onenand | ||
| tests | ||
| ubi | ||
| afs.c | ||
| ar7part.c | ||
| bcm47xxpart.c | ||
| bcm63xxpart.c | ||
| cmdlinepart.c | ||
| ftl.c | ||
| inftlcore.c | ||
| inftlmount.c | ||
| Kconfig | ||
| Makefile | ||
| mtd_blkdevs.c | ||
| mtdblock_ro.c | ||
| mtdblock.c | ||
| mtdchar.c | ||
| mtdconcat.c | ||
| mtdcore.c | ||
| mtdcore.h | ||
| mtdoops.c | ||
| mtdpart.c | ||
| mtdsuper.c | ||
| mtdswap.c | ||
| nftlcore.c | ||
| nftlmount.c | ||
| ofpart.c | ||
| redboot.c | ||
| rfd_ftl.c | ||
| sm_ftl.c | ||
| sm_ftl.h | ||
| ssfdc.c | ||