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2021-06-25Merge remote-tracking branch 'spi/for-5.14' into spi-nextMark Brown1-13/+32
2021-06-21mtd: spi-nor: remove redundant continue statementColin Ian King1-3/+1
The continue statement at the end of a for-loop has no effect, invert the if expression and remove the continue. Addresses-Coverity: ("Continue has no effect") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Michael Walle <michael@walle.cc> Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
2021-06-18ubifs: fix snprintf() checkingDan Carpenter1-1/+1
The snprintf() function returns the number of characters (not counting the NUL terminator) that it would have printed if we had space. This buffer has UBIFS_DFS_DIR_LEN characters plus one extra for the terminator. Printing UBIFS_DFS_DIR_LEN is okay but anything higher will result in truncation. Thus the comparison needs to be change from == to >. These strings are compile time constants so this patch doesn't affect runtime. Fixes: ae380ce04731 ("UBIFS: lessen the size of debugging info data structure") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Alexander Dahl <ada@thorsis.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2021-06-18mtd: rawnand: omap: Add larger page NAND chips supportMiquel Raynal2-69/+116
There is no reason to be limited to 4kiB page NAND chips just because this is the maximum length the ELM is able to handle in one go. Just call the ELM several times and it will process as many data as needed. Here we introduce the concept of ECC page (which is at most 4kiB). The ELM will be sought as many times as there are ECC pages. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Tested-by: Ryan Barnett <ryan.barnett@collins.com> Link: https://lore.kernel.org/linux-mtd/20210610134906.3503303-6-miquel.raynal@bootlin.com
2021-06-18mtd: rawnand: omap: Various style fixesMiquel Raynal1-5/+7
Fix the comments style, declare the variables in a reverse Christmas tree order, add an upper case character at the beginning of a sentence. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610134906.3503303-5-miquel.raynal@bootlin.com
2021-06-18mtd: rawnand: omap: Check return valuesMiquel Raynal1-9/+21
Check the return value of many helpers which might return error codes. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610134906.3503303-4-miquel.raynal@bootlin.com
2021-06-18mtd: rawnand: omap: Rename a macroMiquel Raynal1-8/+8
The macro BADBLOCK_MARKER_LENGTH is pretty long and could be reduced to BBM_LEN which is more handy to use in the code. This is a purely cosmetic change and is only done to avoid further change to contain 100+ char lines just because of this definition. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610134906.3503303-3-miquel.raynal@bootlin.com
2021-06-18mtd: rawnand: omap: Aggregate the HW configuration of the ELMMiquel Raynal1-19/+11
Instead of calling elm_config() for each possible BCH configuration, just save the BCH configuration that must be applied and use it in a single call at the bottom. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610134906.3503303-2-miquel.raynal@bootlin.com
2021-06-18mtd: rawnand: pl353: Add support for the ARM PL353 SMC NAND controllerMiquel Raynal3-0/+1203
This hardware controller is embedded in XilinX Zynq-7000 SoCs and has partial support for Hamming ECC correction. This work is inspired from the original contributions of Punnaiah Choudary Kalluri and Naga Sureshkumar Relli. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Tested-by: Michael Walle <michael@walle.cc> [on zynq-7000] Link: https://lore.kernel.org/linux-mtd/20210610082040.2075611-19-miquel.raynal@bootlin.com
2021-06-18mtd: rawnand: qcom: avoid writing to obsolete registerMd Sadre Alam1-6/+12
QPIC_EBI2_ECC_BUF_CFG register got obsolete from QPIC V2.0 onwards. Avoid writing this register if QPIC version is V2.0 or newer. Signed-off-by: Md Sadre Alam <mdalam@codeaurora.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1623134916-562-1-git-send-email-mdalam@codeaurora.org
2021-06-18mtd: rawnand: marvell: Minor documentation correctionSouptick Joarder1-1/+1
Kernel test robot throws below warning -> drivers/mtd/nand/raw/marvell_nand.c:454: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Minor documentation correction. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Cc: Randy Dunlap <rdunlap@infradead.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210607193736.4654-1-jrdr.linux@gmail.com
2021-06-18mtd: rawnand: r852: use DEVICE_ATTR_RO() helper macroZhen Lei1-4/+3
Use DEVICE_ATTR_RO() helper macro instead of plain DEVICE_ATTR(), which makes the code a bit shorter and easier to read. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210603123339.12089-1-thunder.leizhen@huawei.com
2021-06-18mtd: spinand: add SPI-NAND MTD resume handlerPatrice Chotard1-0/+17
After power up, all SPI NAND's blocks are locked. Only read operations are allowed, write and erase operations are forbidden. The SPI NAND framework unlocks all the blocks during its initialization. During a standby low power, the memory is powered down, losing its configuration. During the resume, the QSPI driver state is restored but the SPI NAND framework does not reconfigured the memory. This patch adds SPI-NAND MTD PM handlers for resume ops. SPI NAND resume op re-initializes SPI NAND flash to its probed state. Signed-off-by: Christophe Kerello <christophe.kerello@foss.st.com> Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210602094913.26472-4-patrice.chotard@foss.st.com
2021-06-18mtd: spinand: Add spinand_init_flash() helperPatrice Chotard1-29/+45
Add spinand_init_flash() helper which implement all needed init for future SPI-NAND resume ops. Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210602094913.26472-3-patrice.chotard@foss.st.com
2021-06-18mtd: spinand: add spinand_read_cfg() helperPatrice Chotard1-9/+20
Put REG_CFG reading code in spinand_read_cfg(). This function will be needed by the future SPI-NAND resume ops. Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210602094913.26472-2-patrice.chotard@foss.st.com
2021-06-18mtd: rawnand: marvell: add missing clk_disable_unprepare() on error in ↵Yang Yingliang1-1/+3
marvell_nfc_resume() Add clk_disable_unprepare() on error path in marvell_nfc_resume(). Fixes: bd9c3f9b3c00 ("mtd: rawnand: marvell: add suspend and resume hooks") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210601125814.3260364-1-yangyingliang@huawei.com
2021-06-18mtd: rawnand: arasan: Finer grain NV-DDR configurationMiquel Raynal1-2/+54
Add support for the timings register which may improve a bit the overall throughput. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210527084959.208804-2-miquel.raynal@bootlin.com
2021-06-18mtd: rawnand: arasan: Rename the data interface registerMiquel Raynal1-7/+7
There are 2 timing registers: - "data interface" - "timings" So far, the "data interface" register was named "timings" which begins misleading when bringing support for the "timings" register. Rename it to "data_iface". Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210527084959.208804-1-miquel.raynal@bootlin.com
2021-06-18mtd: rawnand: onfi: Fix endianness when reading NV-DDR valuesMiquel Raynal1-3/+3
Without the use of le16_to_cpu(), these accesses would have been wrong on a big-endian machine. Reported-by: kernel test robot <lkp@intel.com> Fixes: 45606518f961 ("mtd: rawnand: Add onfi_fill_nvddr_interface_config() helper") Fixes: 9310668fb60a ("mtd: rawnand: Retrieve NV-DDR timing modes from the ONFI parameter page") Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210527084913.208635-1-miquel.raynal@bootlin.com
2021-06-18mtd: rawnand: arasan: Use the right DMA maskMiquel Raynal1-0/+4
Xilinx ZynqMP SoC and the Arasan controller support 64-bit DMA addressing. Define the right mask otherwise the default is 32 and some accesses may overflow the default mask. Reported-by: Jorge Courett <jorge.courett@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Tested-by: Jorge Courett <jorge.courett@gmail.com> Link: https://lore.kernel.org/linux-mtd/20210527084548.208429-1-miquel.raynal@bootlin.com
2021-06-17pstore/blk: Include zone in pstore_device_infoKees Cook1-5/+5
Information was redundant between struct pstore_zone_info and struct pstore_device_info. Use struct pstore_zone_info, with member name "zone". Additionally untangle the logic for the "best effort" block device instance. Signed-off-by: Kees Cook <keescook@chromium.org> Fixed-by: Pu Lehui <pulehui@huawei.com> Link: https://lore.kernel.org/lkml/20210617005424.182305-1-pulehui@huawei.com
2021-06-16mtd_blkdevs: initialze new->rq in add_mtd_blktrans_devChristoph Hellwig1-0/+1
Various places expect the request_queue in ->rq. Initialize it to avoid NULL pointer derefences. Fixes: 6966bb921def ("mtd_blkdevs: use blk_mq_alloc_disk") Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-06-15mtd: spi-nor: add initial sysfs supportMichael Walle4-1/+97
Add support to show the manufacturer, the partname and JEDEC identifier as well as to dump the SFDP table. Not all flashes list their SFDP table contents in their datasheet. So having that is useful. It might also be helpful in bug reports from users. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Acked-by: Pratyush Yadav <p.yadav@ti.com>
2021-06-15mtd: spi-nor: sfdp: save a copy of the SFDP dataMichael Walle2-0/+68
Due to possible mode switching to 8D-8D-8D, it might not be possible to read the SFDP after the initial probe. To be able to dump the SFDP via sysfs afterwards, make a complete copy of it. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Tested-by: Heiko Thiery <heiko.thiery@gmail.com> Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
2021-06-11mtd: Convert list_for_each to entry variantZou Wei1-4/+1
convert list_for_each() to list_for_each_entry() where applicable. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zou Wei <zou_wei@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1623155699-61935-1-git-send-email-zou_wei@huawei.com
2021-06-11mtd: inftl: remove unnecessary oom messageZhen Lei1-13/+2
Fixes scripts/checkpatch.pl warning: WARNING: Possible unnecessary 'out of memory' message Remove it can help us save a bit of memory. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610022850.15397-1-thunder.leizhen@huawei.com
2021-06-11mtd: amd76xrom: remove unnecessary oom messageZhen Lei1-4/+2
Fixes scripts/checkpatch.pl warning: WARNING: Possible unnecessary 'out of memory' message Remove it can help us save a bit of memory. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610022631.15344-1-thunder.leizhen@huawei.com
2021-06-11mtd: ck804xrom: remove unnecessary oom messageZhen Lei1-5/+3
Fixes scripts/checkpatch.pl warning: WARNING: Possible unnecessary 'out of memory' message Remove it can help us save a bit of memory. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610022416.15291-1-thunder.leizhen@huawei.com
2021-06-11mtd: esb2rom: remove unnecessary oom messageZhen Lei1-4/+3
Fixes scripts/checkpatch.pl warning: WARNING: Possible unnecessary 'out of memory' message Remove it can help us save a bit of memory. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610022239.15238-1-thunder.leizhen@huawei.com
2021-06-11mtd: ichxrom: remove unnecessary oom messageZhen Lei1-4/+2
Fixes scripts/checkpatch.pl warning: WARNING: Possible unnecessary 'out of memory' message Remove it can help us save a bit of memory. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610022100.15185-1-thunder.leizhen@huawei.com
2021-06-11mtd: sun_uflash: remove unnecessary oom messageZhen Lei1-3/+1
Fixes scripts/checkpatch.pl warning: WARNING: Possible unnecessary 'out of memory' message Remove it can help us save a bit of memory. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610021400.15132-1-thunder.leizhen@huawei.com
2021-06-11mtd: mtdoops: remove unnecessary oom messageZhen Lei1-3/+1
Fixes scripts/checkpatch.pl warning: WARNING: Possible unnecessary 'out of memory' message Remove it can help us save a bit of memory. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610021201.15076-1-thunder.leizhen@huawei.com
2021-06-11mtd: rawnand: atmel: remove unnecessary oom messageZhen Lei1-3/+1
Fixes scripts/checkpatch.pl warning: WARNING: Possible unnecessary 'out of memory' message Remove it can help us save a bit of memory. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610020958.15023-1-thunder.leizhen@huawei.com
2021-06-11mtd: rawnand: sunxi: remove unnecessary oom messageZhen Lei1-3/+1
Fixes scripts/checkpatch.pl warning: WARNING: Possible unnecessary 'out of memory' message Remove it can help us save a bit of memory. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610020620.14970-1-thunder.leizhen@huawei.com
2021-06-11mtd: nftl: remove unnecessary oom messageZhen Lei1-4/+1
Fixes scripts/checkpatch.pl warning: WARNING: Possible unnecessary 'out of memory' message Remove it can help us save a bit of memory. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610020130.14917-1-thunder.leizhen@huawei.com
2021-06-11mtd: rfd_ftl: remove unnecessary oom messageZhen Lei1-4/+1
Fixes scripts/checkpatch.pl warning: WARNING: Possible unnecessary 'out of memory' message Remove it can help us save a bit of memory. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210610015052.14864-1-thunder.leizhen@huawei.com
2021-06-11mtd: devices: add support for microchip 48l640 EERAMHeiko Schocher3-0/+380
The Microchip 48l640 is a 8KByte EERAM connected via SPI. Signed-off-by: Heiko Schocher <hs@denx.de> Tested-by: Fabio Estevam <festevam@denx.de> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210607033909.1424605-3-hs@denx.de
2021-06-11mtd: core: use MTD_DEVICE_ATTR_RO/RW() helper macrosZhen Lei1-25/+21
Use MTD_DEVICE_ATTR_RO/RW() helper macros instead of plain DEVICE_ATTR(), which makes the code a bit shorter and easier to read. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210603125323.12142-3-thunder.leizhen@huawei.com
2021-06-11mtd: core: add MTD_DEVICE_ATTR_RO/RW() helper macrosZhen Lei1-0/+6
Compared with the definition of DEVICE_ATTR_RO/RW(), the read and write function names of the sysfs attribute have an additional "mtd_" prefix. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210603125323.12142-2-thunder.leizhen@huawei.com
2021-06-11mtd: mtdpart: use DEVICE_ATTR_RO() helper macroZhen Lei1-4/+3
Use DEVICE_ATTR_RO() helper macro instead of plain DEVICE_ATTR(), which makes the code a bit shorter and easier to read. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210603123041.12036-1-thunder.leizhen@huawei.com
2021-06-11mtd: spinand: Fix double counting of ECC statsMiquel Raynal1-6/+11
In the raw NAND world, ECC engines increment ecc_stats and the final caller is responsible for returning -EBADMSG if the verification failed. In the SPI-NAND world it was a bit different until now because there was only one possible ECC engine: the on-die one. Indeed, the spinand_mtd_read() call was incrementing the ecc_stats counters depending on the outcome of spinand_check_ecc_status() directly. So now let's split the logic like this: - spinand_check_ecc_status() is specific to the SPI-NAND on-die engine and is kept very simple: it just returns the ECC status (bonus point: the content of this helper can be overloaded). - spinand_ondie_ecc_finish_io_req() is the caller of spinand_check_ecc_status() and will increment the counters and eventually return -EBADMSG. - spinand_mtd_read() is not tied to the on-die ECC implementation and should be able to handle results coming from other ECC engines: it has the responsibility of returning the maximum number of bitflips which happened during the entire operation as this is the only helper that is aware that several pages may be read in a row. Fixes: 945845b54c9c ("mtd: spinand: Instantiate a SPI-NAND on-die ECC engine") Reported-by: YouChing Lin <ycllin@mxic.com.tw> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Tested-by: YouChing Lin <ycllin@mxic.com.tw> Link: https://lore.kernel.org/linux-mtd/20210527084345.208215-1-miquel.raynal@bootlin.com
2021-06-11ubi: use blk_mq_alloc_disk and blk_cleanup_diskChristoph Hellwig1-39/+29
Use blk_mq_alloc_disk and blk_cleanup_disk to simplify the gendisk and request_queue allocation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Link: https://lore.kernel.org/r/20210602065345.355274-27-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-06-11mtd_blkdevs: use blk_mq_alloc_diskChristoph Hellwig1-26/+22
Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue allocation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Link: https://lore.kernel.org/r/20210602065345.355274-10-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-06-09mtd: spi-nor: otp: implement erase for Winbond and similar flashesMichael Walle4-1/+92
Winbond flashes with OTP support provide a command to erase the OTP data. This might come in handy during development. This was tested with a Winbond W25Q32JW on a LS1028A SoC with the NXP FSPI controller. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Pratyush Yadav <p.yadav@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2021-06-09mtd: spi-nor: otp: return -EROFS if region is read-onlyMichael Walle1-3/+38
SPI NOR flashes will just ignore program commands if the OTP region is locked. Thus, a user might not notice that the intended write didn't end up in the flash. Return -EROFS to the user in this case. From what I can tell, chips/cfi_cmdset_0001.c also return this error code. One could optimize spi_nor_mtd_otp_range_is_locked() to read the status register only once and not for every OTP region, but for that we would need some more invasive changes. Given that this is one-time-programmable memory and the normal access mode is reading, we just live with the small overhead. By moving the code around a bit, we can just check the length before calling spi_nor_mtd_otp_range_is_locked() and avoid an underflow there if a len is 0. This way we don't need to take the lock either. We also skip the "*retlen = 0" assignment, mtdcore already takes care of that for us. Fixes: 069089acf88b ("mtd: spi-nor: add OTP support") Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Pratyush Yadav <p.yadav@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2021-06-09mtd: spi-nor: otp: use more consistent wordingMichael Walle1-8/+19
Use the wording as used in the datasheet to describe the access methods of the security registers (aka OTP storage). This will also match the function names. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Pratyush Yadav <p.yadav@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2021-06-09mtd: spi-nor: otp: fix access to security registers in 4 byte modeMichael Walle1-2/+0
The security registers either take a 3 byte or a 4 byte address offset, depending on the address mode of the flash. Thus just leave the nor->addr_width as is. Fixes: cad3193fe9d1 ("mtd: spi-nor: implement OTP support for Winbond and similar flashes") Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Pratyush Yadav <p.yadav@ti.com>
2021-06-03mtd: spinand: use the spi-mem poll status APIsPatrice Chotard1-13/+32
Make use of spi-mem poll status APIs to let advanced controllers optimize wait operations. This should also fix the high CPU usage for system that don't have a dedicated STATUS poll block logic. Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Christophe Kerello <christophe.kerello@foss.st.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Acked-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/r/20210518162754.15940-3-patrice.chotard@foss.st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27mtd: spi-nor: enable locking support for MX25L12805DDavid Bauer1-1/+2
Macronix MX25L12805D supports locking with 4 block protection bits in its status register. Add the corresponding flag in order to clear these bits when unloking the flash. Otherwise, the flash might not be writable depending on the state left by the bootloader. Tested-on: Ubiquiti UniFi AC Lite (ath79) Signed-off-by: David Bauer <mail@david-bauer.net> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Michael Walle <michael@walle.cc>
2021-05-27mtd: spi-nor: macronix: Fix name for mx66l51235fTudor Ambarus1-1/+1
According to macronix website, there is no mx66l51235l part number. The chip detected as such is actually mx66l51235f. Rename the flash. Do not update the mx66l51235l name from the spi_nor_dev_ids[], since there are dt that are using this compatible. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-22 02:29:42 +0300