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1dc338e856
linux/drivers/mtd
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Rostislav Lisovy 1dc338e856 mtd: nand: omap: Synchronize the access to the ECC engine 
The AM335x Technical Reference Manual (spruh73j.pdf) says
"Because the ECC engine includes only one accumulation context,
it can be allocated to only one chip-select at a time ... "
(7.1.3.3.12.3). Since the commit 97a288ba2c ("ARM: omap2+:
gpmc-nand: Use dynamic platform_device_alloc()") gpmc-nand
driver supports multiple NAND flash devices connected to
the single controller.
Use global 'struct nand_hw_control' among multiple NAND
instances to synchronize the access to the single ECC Engine.

Tested with custom AM335x board using 2x NAND flash chips.

Signed-off-by: Rostislav Lisovy <lisovy@merica.cz>
Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-11-05 13:01:22 -08:00
..
chips mtd: cfi_cmdset_0001.c: fix resume for LH28F640BF chips 2014-10-29 18:50:52 -07:00
devices mtd: dataflash: Remove use of tx_dma 2014-11-05 12:57:24 -08:00
lpddr mtd: lpddr: fix Kconfig dependency, for I/O accessors 2014-05-26 10:38:25 -07:00
maps mtd: bfin-async-flash: Remove unused variable 2014-10-22 01:35:41 -07:00
nand mtd: nand: omap: Synchronize the access to the ECC engine 2014-11-05 13:01:22 -08:00
onenand mtd: onenand: remove s5pc100 related onenand codes 2014-07-13 07:35:14 +09:00
spi-nor mtd: spi-nor: Move n25q032 entry to Micron devices list 2014-11-05 12:58:38 -08:00
tests mtd: tests: fix integer overflow issues 2014-08-19 11:53:08 -07:00
ubi UBI: Fastmap: Calc fastmap size correctly 2014-10-03 17:33:28 +03:00
afs.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
ar7part.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
bcm47xxpart.c mtd: bcm47xxpart: only register partitions if the trx header was filled 2014-10-22 02:04:34 -07:00
bcm63xxpart.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
cmdlinepart.c mtd: cmdlinepart: Spelling s/trucate/truncate/ 2014-07-02 15:17:15 -07:00
ftl.c mtd/ftl: fix the double free of the buffers allocated in build_maps() 2014-07-14 18:41:20 -07:00
inftlcore.c mtd: nand: add a helper to detect the nand type 2013-10-27 16:27:06 -07:00
inftlmount.c mtd: delete non-required instances of include <linux/init.h> 2014-03-10 22:42:22 -07:00
Kconfig mtd: update help of CONFIG_MTD_OF_PARTS 2014-11-05 01:17:56 -08:00
Makefile mtd: spi-nor: shorten Kconfig naming 2014-04-14 11:23:01 -07:00
mtd_blkdevs.c block: disable entropy contributions for nonrot devices 2014-10-04 10:55:32 -06:00
mtdblock_ro.c mtd: Move major number definitions to major.h 2013-11-06 23:32:59 -08:00
mtdblock.c mtd: Move major number definitions to major.h 2013-11-06 23:32:59 -08:00
mtdchar.c mtd: terminate user-provided string 2014-08-19 11:53:09 -07:00
mtdconcat.c
mtdcore.c mtd: remove dead non-char logic 2014-08-19 11:53:08 -07:00
mtdcore.h mtd: merge mtdchar module with mtdcore 2013-04-05 13:16:54 +01:00
mtdoops.c mtdoops: don't erase flash at each boot 2012-11-15 15:37:51 +02:00
mtdpart.c mtd: Account for BBT blocks when a partition is being allocated 2014-07-08 18:38:29 -07:00
mtdsuper.c mtd: Move major number definitions to major.h 2013-11-06 23:32:59 -08:00
mtdswap.c mtd: use __packed shorthand 2014-08-19 11:53:08 -07:00
nftlcore.c mtd: nand: add a helper to detect the nand type 2013-10-27 16:27:06 -07:00
nftlmount.c
ofpart.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
redboot.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
rfd_ftl.c mtd: remove some duplicative checks 2014-03-10 22:42:25 -07:00
sm_ftl.c mtd: sm_ftl: initialize error code 2014-08-19 11:53:07 -07:00
sm_ftl.h
ssfdc.c mtd: nand: add a helper to detect the nand type 2013-10-27 16:27:06 -07:00