linux/drivers/mtd
Rouven Czerwinski f6ca3fb697 mtd: rawnand: Ensure the nand chip supports cached reads
Both the JEDEC and ONFI specification say that read cache sequential
support is an optional command. This means that we not only need to
check whether the individual controller supports the command, we also
need to check the parameter pages for both ONFI and JEDEC NAND flashes
before enabling sequential cache reads.

This fixes support for NAND flashes which don't support enabling cache
reads, i.e. Samsung K9F4G08U0F or Toshiba TC58NVG0S3HTA00.

Sequential cache reads are now only available for ONFI and JEDEC
devices, if individual vendors implement this, it needs to be enabled
per vendor.

Tested on i.MX6Q with a Samsung NAND flash chip that doesn't support
sequential reads.

Fixes: 003fe4b954 ("mtd: rawnand: Support for sequential cache reads")
Cc: stable@vger.kernel.org
Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230922141717.35977-1-r.czerwinski@pengutronix.de
2023-10-16 10:47:22 +02:00
..
chips mfd: Explicitly include correct DT includes 2023-08-18 21:48:03 +01:00
devices mtd: spear_smi: Use helper function devm_clk_get_enabled() 2023-08-21 09:44:39 +02:00
hyperbus memory: renesas-rpc-if: Remove Runtime PM wrappers 2023-01-23 11:48:00 +01:00
lpddr mtd: lpddr2_nvm: Convert to devm_platform_ioremap_resource() 2023-07-12 14:08:26 +02:00
maps mtd: physmap-core: Restore map_rom fallback 2023-09-11 17:48:22 +02:00
nand mtd: rawnand: Ensure the nand chip supports cached reads 2023-10-16 10:47:22 +02:00
parsers Raw NAND core changes: 2023-04-19 20:39:03 +02:00
spi-nor Core MTD changes: 2023-09-03 09:59:53 -07:00
tests treewide: use get_random_u32_below() instead of deprecated function 2022-11-18 02:15:15 +01:00
ubi block: replace fmode_t with a block-specific type for block open flags 2023-06-12 08:04:05 -06:00
ftl.c mtd: ftl: use container_of() rather than cast 2022-09-19 18:14:53 +02:00
inftlcore.c mtd: inftlcore: fix repeated words in comments 2022-11-07 17:14:21 +01:00
inftlmount.c
Kconfig
Makefile
mtd_blkdevs.c block: replace fmode_t with a block-specific type for block open flags 2023-06-12 08:04:05 -06:00
mtdblock_ro.c mtdblock: make warning messages ratelimited 2023-07-27 17:16:14 +02:00
mtdblock.c mtdblock: make warning messages ratelimited 2023-07-27 17:16:14 +02:00
mtdchar.c mtdchar: mark bits of ioctl handler noinline 2023-06-01 18:12:31 +02:00
mtdconcat.c mtd: fix repeated word in comment 2022-09-20 10:40:30 +02:00
mtdcore.c mtd: Clean refcounting with MTD_PARTITIONED_MASTER 2023-08-04 09:01:56 +02:00
mtdcore.h mtd: use refcount to prevent corruption 2023-07-12 13:30:08 +02:00
mtdoops.c mtd: mtdoops: panic caused mtdoops to call mtdoops_erase function immediately 2022-11-07 17:08:00 +01:00
mtdpart.c mtd: use refcount to prevent corruption 2023-07-12 13:30:08 +02:00
mtdpstore.c mtd: Fix a typo in a comment 2022-09-19 18:14:53 +02:00
mtdsuper.c mtd: key superblock by device number 2023-08-31 12:47:15 +02:00
mtdswap.c mtd: always initialize 'stats' in struct mtd_oob_ops 2022-09-21 10:38:07 +02:00
nftlcore.c mtd: always initialize 'stats' in struct mtd_oob_ops 2022-09-21 10:38:07 +02:00
nftlmount.c
rfd_ftl.c
sm_ftl.c mtd: sm_ftl: Fix typos in comments 2023-06-22 23:00:43 +02:00
sm_ftl.h
ssfdc.c mtd: always initialize 'stats' in struct mtd_oob_ops 2022-09-21 10:38:07 +02:00