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9d0164c650
linux/drivers/mtd
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Miquel Raynal 9d0164c650
mtd: spi-nor: Add support for sst26vf032b flash 
Describe this new part. The datasheet is public.

Link: https://ww1.microchip.com/downloads/aemDocuments/documents/MPD/ProductDocuments/DataSheets/SST26VF032B-SST26VF032BA-2.5V-3.0V-32-Mbit-Serial-Quad-IO-%28SQI%29-Flash-Memory-20005218K.pdf

Here are the sfdp tables plus base testing to show it works.

$ cat /sys/bus/spi/devices/spi0.0/spi-nor/partname
sst26vf032b
$ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
bf2642
$ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
sst
$ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp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$ md5sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
e7efddddb3d5ee89ca37bf6b6e789645  /sys/bus/spi/devices/spi0.0/spi-nor/sfdp

$ dd if=/dev/urandom of=./qspi_test bs=1M count=1
1+0 records in
1+0 records out
$ mtd_debug write /dev/mtd0 0 1048576 qspi_test
Copied 1048576 bytes from qspi_test to address 0x00000000 in flash
$ mtd_debug erase /dev/mtd0 0 1048576
Erased 1048576 bytes from address 0x00000000 in flash
$ mtd_debug read /dev/mtd0 0 1048576 qspi_read
Copied 1048576 bytes from address 0x00000000 in flash to qspi_read
$ hexdump qspi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0100000
$ mtd_debug write /dev/mtd0 0 1048576 qspi_test
Copied 1048576 bytes from qspi_test to address 0x00000000 in flash
$ mtd_debug read /dev/mtd0 0 1048576 qspi_read
Copied 1048576 bytes from address 0x00000000 in flash to qspi_read
$ sha1sum qspi_test qspi_read
2f2f191c7a937eca5db21a1c39e79e7327587cc1  qspi_test
2f2f191c7a937eca5db21a1c39e79e7327587cc1  qspi_read

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230808075001.223150-1-miquel.raynal@bootlin.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
2023-08-18 13:01:42 +03:00
..
chips mtd: chips: Use SPDX license headers 2023-06-09 17:27:11 +02:00
devices Core MTD changes: 2023-06-28 14:02:03 -07:00
hyperbus memory: renesas-rpc-if: Remove Runtime PM wrappers 2023-01-23 11:48:00 +01:00
lpddr mtd: lpddr_cmds: remove unused words variable 2023-03-28 14:59:21 +02:00
maps mtd: maps: pismo: Switch back to use i2c_driver's .probe() 2023-06-19 10:26:03 +02:00
nand Core MTD changes: 2023-06-28 14:02:03 -07:00
parsers Raw NAND core changes: 2023-04-19 20:39:03 +02:00
spi-nor mtd: spi-nor: Add support for sst26vf032b flash 2023-08-18 13:01:42 +03:00
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 mtdblock: Add comment about UBI block devices 2021-08-06 22:05:13 +02:00
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: tolerate corrected bit-flips 2023-03-22 17:02:19 +01:00
mtdblock.c mtd: block: use a simple bool to track open for write 2023-06-12 08:04:04 -06:00
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: otp: clean up on error in mtd_otp_nvmem_add() 2023-06-19 10:26:06 +02:00
mtdcore.h
mtdoops.c mtd: mtdoops: panic caused mtdoops to call mtdoops_erase function immediately 2022-11-07 17:08:00 +01:00
mtdpart.c mtd: mtdpart: Drop useless LIST_HEAD 2023-06-09 17:27:14 +02:00
mtdpstore.c mtd: Fix a typo in a comment 2022-09-19 18:14:53 +02:00
mtdsuper.c mm: don't include <linux/blkdev.h> in <linux/backing-dev.h> 2021-10-18 06:17:01 -06:00
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 mtd/rfd_ftl: don't cast away the type when calling add_mtd_blktrans_dev 2021-08-23 10:01:06 +02:00
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