linux/drivers/mtd
Elie De Brauwer 2b468ef0e7 mtd: m25p80: Fix 4 byte addressing mode for Micron devices.
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>
2013-09-27 05:56:22 -05:00
..
chips
devices mtd: m25p80: Fix 4 byte addressing mode for Micron devices. 2013-09-27 05:56:22 -05:00
lpddr
maps mtd: maps: cfi_flagadm: add missing __iomem annotation 2013-08-30 21:51:49 +01:00
nand mtd: nand: fix memory leak in ONFI extended parameter page 2013-09-27 05:48:02 -05:00
onenand mtd: onenand: use dev_get_platdata() 2013-08-30 21:34:34 +01:00
tests mtd: tests: incorporate error message for mtdtest_write() 2013-08-30 21:36:06 +01:00
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 mtd: add a new sys node to show the ecc step size 2013-08-30 21:37:56 +01:00
mtdcore.h
mtdoops.c
mtdpart.c mtd: set the ecc step size for master/slave mtd_info 2013-08-30 21:38:02 +01:00
mtdsuper.c
mtdswap.c mtd: mtdswap: replace strict_strtoul() with kstrtoul() 2013-08-30 21:52:51 +01:00
nftlcore.c
nftlmount.c
ofpart.c mtd: ofpart: use for_each_child_of_node() macro 2013-08-30 21:52:57 +01:00
redboot.c
rfd_ftl.c
sm_ftl.c mtd: sm_ftl: Staticize local symbols 2013-08-30 21:51:25 +01:00
sm_ftl.h
ssfdc.c