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2023-12-22Merge tag 'nand/for-6.8' into mtd/nextMiquel Raynal1-0/+13
* Raw NAND The most meaningful change being the conversion of the brcmnand driver to the ->exec_op() API, this series brought additional changes to the core in order to help controller drivers to handle themselves the WP pin during destructive operations when relevant. As always, there is as well a whole bunch of miscellaneous W=1 fixes, together with a few runtime fixes (double free, timeout value, OOB layout, missing register initialization) and the usual load of remove callbacks turned into void (which led to switch the txx9ndfmc driver to use module_platform_driver()).
2023-12-22mtd: rawnand: Prevent crossing LUN boundaries during sequential readsMiquel Raynal1-0/+2
The ONFI specification states that devices do not need to support sequential reads across LUN boundaries. In order to prevent such event from happening and possibly failing, let's introduce the concept of "pause" in the sequential read to handle these cases. The first/last pages remain the same but any time we cross a LUN boundary we will end and restart (if relevant) the sequential read operation. Cc: stable@vger.kernel.org Fixes: 003fe4b9545b ("mtd: rawnand: Support for sequential cache reads") Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Tested-by: Martin Hundebøll <martin@geanix.com> Link: https://lore.kernel.org/linux-mtd/20231215123208.516590-2-miquel.raynal@bootlin.com
2023-12-04mtd: rawnand: NAND controller write protectDavid Regan1-0/+2
Allow NAND controller to be responsible for write protect pin handling during fast path and exec_op destructive operation when controller_wp flag is set. Signed-off-by: David Regan <dregan@broadcom.com> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20231125012438.15191-2-dregan@broadcom.com
2023-12-04mtd: rawnand: Add destructive operationBoris Brezillon1-0/+11
Erase and program operations need the write protect (wp) pin to be de-asserted to take effect. Add the concept of destructive operation and pass the information to exec_op() so controllers know when they should de-assert this pin without having to decode the command opcode. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: David Regan <dregan@broadcom.com> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20231125012438.15191-1-dregan@broadcom.com
2023-11-05Merge tag 'mtd/for-6.7' of ↵Linus Torvalds3-2/+3
git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux Pull mtd updates from Miquel Raynal: "The main set of changes is related to Uwe's work converting platform remove callbacks to return void. Comes next (in number of changes) Kees' additional structures annotations to improve the sanitizers. The usual amount of cleanups apply. About the more substancial contribution, one main function of the partitions core could return an error which was not checked, this is now fixed. On the bindings side, fixed partitions can now have a compression property. Finally, an erroneous situation is now always avoided in the MAP RAM driver. CFI: - A several years old byte swap has been fixed. NAND: - The subsystem has, as usual, seen a bit of cleanup being done this cycle, typically return values of platform_get_irq() and devm_kasprintf(). There is also a better ECC check in the Arasan driver. This comes with smaller misc changes. - In the SPI-NAND world there is now support for Foresee F35SQA002G, Winbond W25N and XTX XT26 chips. SPI NOR: - For SPI NOR we cleaned the flash info entries in order to have them slimmer and self explanatory. In order to make the entries as slim as possible, we introduced sane default values so that the actual flash entries don't need to specify them. We now use a flexible macro to specify the flash ID instead of the previous INFOx() macros that had hardcoded ID lengths. Instead of: { "w25q512nwm", INFO(0xef8020, 0, 64 * 1024, 0) OTP_INFO(256, 3, 0x1000, 0x1000) }, We now use: .id = SNOR_ID(0xef, 0x80, 0x20), .name = "w25q512nwm", .otp = SNOR_OTP(256, 3, 0x1000, 0x1000), - We also removed some flash entries: the very old Catalyst SPI EEPROMs that were introduced once with the SPI-NOR subsystem, and a Fujitsu MRAM. Both should use the at25 EEPROM driver. The latter even has device tree bindings for the at25 driver. - We made sure that the conversion didn't introduce any unwanted changes by comparing the .rodata segment before and after the conversion. The patches landed in linux-next immediately after v6.6-rc2, we haven't seen any regressions yet. - Apart of the autumn cleaning we introduced a new flash entry, at25ff321a, and added block protection support for mt25qu512a" * tag 'mtd/for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (91 commits) mtd: cfi_cmdset_0001: Byte swap OTP info mtd: rawnand: meson: check return value of devm_kasprintf() mtd: rawnand: intel: check return value of devm_kasprintf() mtd: rawnand: sh_flctl: Convert to module_platform_driver() mtd: spi-nor: micron-st: use SFDP table for mt25qu512a mtd: spi-nor: micron-st: enable lock/unlock for mt25qu512a mtd: rawnand: Remove unused of_gpio.h inclusion mtd: spinand: Add support for XTX XT26xxxDxxxxx mtd: spinand: winbond: add support for serial NAND flash mtd: rawnand: cadence: Annotate struct cdns_nand_chip with __counted_by mtd: rawnand: Annotate struct mtk_nfc_nand_chip with __counted_by mtd: spinand: add support for FORESEE F35SQA002G mtd: rawnand: rockchip: Use struct_size() mtd: rawnand: arasan: Include ECC syndrome along with in-band data while checking for ECC failure mtd: Use device_get_match_data() mtd: spi-nor: nxp-spifi: Convert to platform remove callback returning void mtd: spi-nor: hisi-sfc: Convert to platform remove callback returning void mtd: maps: sun_uflash: Convert to platform remove callback returning void mtd: maps: sa1100-flash: Convert to platform remove callback returning void mtd: maps: pxa2xx-flash: Convert to platform remove callback returning void ...
2023-11-04Merge tag 'nand/for-6.7' into mtd/nextMiquel Raynal1-0/+1
The raw NAND subsystem has, as usual, seen a bit of cleanup being done this cycle, typically return values of platform_get_irq() and devm_kasprintf(), plus structure annotations for sanitizers. There is also a better ECC check in the Arasan driver. This comes with smaller misc changes. In the SPI-NAND world there is now support for Foresee F35SQA002G, Winbond W25N and XTX XT26 chips. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2023-10-16mtd: spinand: add support for FORESEE F35SQA002GMartin Kurbanov1-0/+1
Add support for FORESEE F35SQA002G SPI NAND. Datasheet: https://www.longsys.com/uploads/LM-00006FORESEEF35SQA002GDatasheet_1650183701.pdf Signed-off-by: Martin Kurbanov <mmkurbanov@salutedevices.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20231002140458.147605-1-mmkurbanov@salutedevices.com
2023-10-16mtd: rawnand: Ensure the nand chip supports cached readsRouven Czerwinski3-0/+6
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: 003fe4b9545b ("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
2023-09-22mtd: cfi: Annotate struct cfi_private with __counted_byKees Cook1-1/+1
Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct cfi_private. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Miquel Raynal <miquel.raynal@bootlin.com> Cc: Richard Weinberger <richard@nod.at> Cc: Vignesh Raghavendra <vigneshr@ti.com> Cc: linux-mtd@lists.infradead.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20230915201206.never.107-kees@kernel.org
2023-09-22mtd: Annotate struct lpddr_private with __counted_byKees Cook1-1/+1
Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct lpddr_private. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Miquel Raynal <miquel.raynal@bootlin.com> Cc: Richard Weinberger <richard@nod.at> Cc: Vignesh Raghavendra <vigneshr@ti.com> Cc: linux-mtd@lists.infradead.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20230915201159.never.112-kees@kernel.org
2023-08-28Merge tag 'nand/for-6.6' into mtd/nextMiquel Raynal1-0/+1
Raw NAND core changes: * Fix -Wvoid-pointer-to-enum-cast warning * Export 'nand_exit_status_op()' * dt-bindings: Fix nand-controller.yaml license Raw NAND controller driver changes: * Omap, Omap2, Samsung, Atmel, fsl_upm, lpc32xx_slc, lpc32xx_mlc, STM32_FMC2, sh_ftlctl, MXC, Sunxi: - Use devm_platform_get_and_ioremap_resource() * Orion, vf610_nfc, Sunxi, STM32_FMC2, MTK, mpc5121, lpc32xx_slc, Intel, FSMC, Arasan: - Use helper function devm_clk_get_optional_enabled() * Brcmnand: - Use devm_platform_ioremap_resource_byname() - Propagate init error -EPROBE_DEFER up - Propagate error and simplify ternary operators - Fix mtd oobsize - Fix potential out-of-bounds access in oob write - Fix crash during the panic_write - Fix potential false time out warning - Fix ECC level field setting for v7.2 controller * fsmc: Handle clk prepare error in fsmc_nand_resume() * Marvell: Add support for AC5 SoC * Meson: - Support for 512B ECC step size - Fix build error - Use NAND core API to check status - dt-bindings: * Make ECC properties dependent * Support for 512B ECC step size * Drop unneeded quotes * Oxnas: Remove driver and bindings * Qcom: - Conversion to ->exec_op() - Removal of the legacy interface - Two full series of improvements/misc fixes * Use the BIT() macro * Use u8 instead of uint8_t * Fix alignment with open parenthesis * Fix the spacing * Fix wrong indentation * Fix a typo * Early structure initialization * Fix address parsing within ->exec_op() * Remove superfluous initialization of "ret" * Rename variables in qcom_op_cmd_mapping() * Handle unsupported opcode in qcom_op_cmd_mapping() * Fix the opcode check in qcom_check_op() * Use EOPNOTSUPP instead of ENOTSUPP * Wrap qcom_nand_exec_op() to 80 columns * Unmap sg_list and free desc within submic_descs() * Simplify the call to nand_prog_page_end_op() * Do not override the error no of submit_descs() * Sort includes alphabetically * Clear buf_count and buf_start in raw read * Add read/read_start ops in exec_op path * vf610_nfc: Do not check 0 for platform_get_irq() SPI-NAND changes: * gigadevice: Add support for GD5F1GQ{4,5}RExxH * esmt: Add support for F50D2G41KA * toshiba: Add support for T{C,H}58NYG{0,2}S3HBAI4 and TH58NYG3S0HBAI6 Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2023-07-12mtd: rawnand: export 'nand_exit_status_op()'Arseniy Krasnov1-0/+1
Export this function to work in pair with 'nand_status_op()' which is already exported. Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20230705104403.696680-2-AVKrasnov@sberdevices.ru
2023-07-12mtd: use refcount to prevent corruptionTomas Winkler1-1/+1
When underlying device is removed mtd core will crash in case user space is holding open handle. Need to use proper refcounting so device is release only when has no users. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20230620131905.648089-2-alexander.usyskin@intel.com
2023-06-12mtd: block: use a simple bool to track open for writeChristoph Hellwig1-1/+1
Instead of propagating the fmode_t, just use a bool to track if a mtd block device was opened for writing. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Christian Brauner <brauner@kernel.org> Acked-by: Richard Weinberger <richard@nod.at> Link: https://lore.kernel.org/r/20230608110258.189493-23-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-04-19Merge tag 'nand/for-6.4' into mtd/nextMiquel Raynal2-1/+2
Raw NAND core changes: * Convert to platform remove callback returning void * Fix spelling mistake waifunc() -> waitfunc() Raw NAND controller driver changes: * imx: Remove unused is_imx51_nfc and imx53_nfc functions * omap2: Drop obsolete dependency on COMPILE_TEST * orion: Use devm_platform_ioremap_resource() * qcom: - Use of_property_present() for testing DT property presence - Use devm_platform_get_and_ioremap_resource() * stm32_fmc2: Depends on ARCH_STM32 instead of MACH_STM32MP157 * tmio: Remove reference to config MTD_NAND_TMIO in the parsers Raw NAND manufacturer driver changes: * hynix: Fix up bit 0 of sdr_timing_mode SPI-NAND changes: * Add support for ESMT F50x1G41LB Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2023-04-04mtd: spi-nor: Stop exporting spi_nor_restore()Tudor Ambarus1-6/+0
Some SPI NOR controllers that used this method were moved to drivers/spi/. We don't accept new support for the existing SPI NOR controllers drivers under drivers/mtd/spi-nor/controllers/ and we encourage their owners to move the drivers under drivers/spi/. Make spi_nor_restore() private as we're going to use it just in core.c. Link: https://lore.kernel.org/r/20230331074606.3559258-8-tudor.ambarus@linaro.org Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
2023-04-03mtd: spinand: add support for ESMT F50x1G41LBChuanhong Guo1-0/+1
This patch adds support for ESMT F50L1G41LB and F50D1G41LB. It seems that ESMT likes to use random JEDEC ID from other vendors. Their 1G chips uses 0xc8 from GigaDevice and 2G/4G chips uses 0x2c from Micron. For this reason, the ESMT entry is named esmt_c8 with explicit JEDEC ID in variable name. Datasheets: https://www.esmt.com.tw/upload/pdf/ESMT/datasheets/F50L1G41LB(2M).pdf https://www.esmt.com.tw/upload/pdf/ESMT/datasheets/F50D1G41LB(2M).pdf Signed-off-by: Chuanhong Guo <gch981213@gmail.com> Signed-off-by: Martin Kurbanov <mmkurbanov@sberdevices.ru> Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru> Tested-by: Martin Kurbanov <mmkurbanov@sberdevices.ru> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20230329114240.378722-1-mmkurbanov@sberdevices.ru
2023-03-29mtd: spi-nor: Enhance locking to support reads while writesMiquel Raynal1-0/+13
On devices featuring several banks, the Read While Write (RWW) feature is here to improve the overall performance when performing parallel reads and writes at different locations (different banks). The following constraints have to be taken into account: 1#: A single operation can be performed in a given bank. 2#: Only a single program or erase operation can happen on the entire chip (common hardware limitation to limit costs) 3#: Reads must remain serialized even though reads crossing bank boundaries are allowed. 4#: The I/O bus is unique and thus is the most constrained resource, all spi-nor operations requiring access to the spi bus (through the spi controller) must be serialized until the bus exchanges are over. So we must ensure a single operation can be "sent" at a time. 5#: Any other operation that would not be either a read or a write or an erase is considered requiring access to the full chip and cannot be parallelized, we then need to ensure the full chip is in the idle state when this occurs. All these constraints can easily be managed with a proper locking model: 1#: Is enforced by a bitfield of the in-use banks, so that only a single operation can happen in a specific bank at any time. 2#: Is handled by the ongoing_pe boolean which is set before any write or erase, and is released only at the very end of the operation. This way, no other destructive operation on the chip can start during this time frame. 3#: An ongoing_rd boolean allows to track the ongoing reads, so that only one can be performed at a time. 4#: An ongoing_io boolean is introduced in order to capture and serialize bus accessed. This is the one being released "sooner" than before, because we only need to protect the chip against other SPI accesses during the I/O phase, which for the destructive operations is the beginning of the operation (when we send the command cycles and possibly the data), while the second part of the operation (the erase delay or the programmation delay) is when we can do something else in another bank. 5#: Is handled by the three booleans presented above, if any of them is set, the chip is not yet ready for the operation and must wait. All these internal variables are protected by the existing lock, so that changes in this structure are atomic. The serialization is handled with a wait queue. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/r/20230328154105.448540-8-miquel.raynal@bootlin.com Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
2023-03-07mtd: rawnand: Fix spelling mistake waifunc() -> waitfunc()Md Sadre Alam1-1/+1
There is a spelling mistake in a chip->legacy.waifunc(). Fix it. Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20230306144810.22078-1-quic_mdalam@quicinc.com
2023-03-01Merge tag 'ubifs-for-linus-6.3-rc1' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs Pull jffs2, ubi and ubifs updates from Richard Weinberger: "JFFS2: - Fix memory corruption in error path - Spelling and coding style fixes UBI: - Switch to BLK_MQ_F_BLOCKING in ubiblock - Wire up partent device (for sysfs) - Multiple UAF bugfixes - Fix for an infinite loop in WL error path UBIFS: - Fix for multiple memory leaks in error paths - Fixes for wrong space accounting - Minor cleanups - Spelling and coding style fixes" * tag 'ubifs-for-linus-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs: (36 commits) ubi: block: Fix a possible use-after-free bug in ubiblock_create() ubifs: make kobj_type structures constant mtd: ubi: block: wire-up device parent mtd: ubi: wire-up parent MTD device ubi: use correct names in function kernel-doc comments ubi: block: set BLK_MQ_F_BLOCKING jffs2: Fix list_del corruption if compressors initialized failed jffs2: Use function instead of macro when initialize compressors jffs2: fix spelling mistake "neccecary"->"necessary" ubifs: Fix kernel-doc ubifs: Fix some kernel-doc comments UBI: Fastmap: Fix kernel-doc ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed ubi: Fix UAF wear-leveling entry in eraseblk_count_seq_show() ubi: fastmap: Fix missed fm_anchor PEB in wear-leveling after disabling fastmap ubifs: ubifs_releasepage: Remove ubifs_assert(0) to valid this process ubifs: ubifs_writepage: Mark page dirty after writing inode failed ubifs: dirty_cow_znode: Fix memleak in error handling path ubifs: Re-statistic cleaned znode count if commit failed ubi: Fix permission display of the debugfs files ...
2023-02-23Merge tag 'nand/for-6.3' into mtd/nextMiquel Raynal2-0/+22
NAND core changes: * Check the data only read pattern only once * Prepare the late addition of supported operation checks * Support for sequential cache reads * Fix nand_chip kdoc Raw NAND changes: * Fsl_elbc: Propagate HW ECC settings to HW * Marvell: Add missing layouts * Pasemi: Don't use static data to track per-device state * Sunxi: - Fix the size of the last OOB region - Remove an unnecessary check - Remove an unnecessary check - Clean up chips after failed init - Precompute the ECC_CTL register value - Embed sunxi_nand_hw_ecc by value - Update OOB layout to match hardware * tmio_nand: Remove driver * vf610_nfc: Use regular comments for functions SPI-NAND changes: * Add support for AllianceMemory AS5F34G04SND * Macronix: use scratch buffer for DMA operation NAND ECC changes: * Mediatek: - Add ECC support fot MT7986 IC - Add compatible for MT7986 - dt-bindings: Split ECC engine with rawnand controller
2023-02-14mtd: ubi: block: wire-up device parentDaniel Golle1-0/+1
ubiblock devices were previously only identifyable by their name, but not connected to their parent UBI volume device e.g. in sysfs. Properly parent ubiblock device as descendant of a UBI volume device to reflect device model hierachy. Signed-off-by: Daniel Golle <daniel@makrotopia.org> Signed-off-by: Richard Weinberger <richard@nod.at>
2023-01-30mtd: spinand: Add support for AllianceMemory AS5F34G04SNDMario Kicherer1-0/+1
Add support for AllianceMemory AS5F34G04SND SPI NAND flash Datasheet: - https://www.alliancememory.com/wp-content/uploads/pdf/flash/AllianceMemory_SPI_NAND_Flash_July2020_Rev1.0.pdf Signed-off-by: Mario Kicherer <dev@kicherer.org> Reviewed-by: Dhruva Gole <d-gole@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20230126144050.2656358-1-dev@kicherer.org
2023-01-23mtd: rawnand: Fix nand_chip kdocMiquel Raynal1-0/+4
Describe the continuous read nand_chip fields to avoid the following htmldocs warning: include/linux/mtd/rawnand.h:1325: warning: Function parameter or member 'cont_read' not described in 'nand_chip' Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Fixes: 003fe4b9545b ("mtd: rawnand: Support for sequential cache reads") Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20230116094735.11483-1-miquel.raynal@bootlin.com
2023-01-13mtd: rawnand: Support for sequential cache readsJaimeLiao1-0/+9
Add support for sequential cache reads for controllers using the generic core helpers for their fast read/write helpers. Sequential reads may reduce the overhead when accessing physically continuous data by loading in cache the next page while the previous page gets sent out on the NAND bus. The ONFI specification provides the following additional commands to handle sequential cached reads: * 0x31 - READ CACHE SEQUENTIAL: Requires the NAND chip to load the next page into cache while keeping the current cache available for host reads. * 0x3F - READ CACHE END: Tells the NAND chip this is the end of the sequential cache read, the current cache shall remain accessible for the host but no more internal cache loading operation is required. On the bus, a multi page read operation is currently handled like this: 00 -- ADDR1 -- 30 -- WAIT_RDY (tR+tRR) -- DATA1_IN 00 -- ADDR2 -- 30 -- WAIT_RDY (tR+tRR) -- DATA2_IN 00 -- ADDR3 -- 30 -- WAIT_RDY (tR+tRR) -- DATA3_IN Sequential cached reads may instead be achieved with: 00 -- ADDR1 -- 30 -- WAIT_RDY (tR) -- \ 31 -- WAIT_RDY (tRCBSY+tRR) -- DATA1_IN \ 31 -- WAIT_RDY (tRCBSY+tRR) -- DATA2_IN \ 3F -- WAIT_RDY (tRCBSY+tRR) -- DATA3_IN Below are the read speed test results with regular reads and sequential cached reads, on NXP i.MX6 VAR-SOM-SOLO in mapping mode with a NAND chip characterized with the following timings: * tR: 20 µs * tRCBSY: 5 µs * tRR: 20 ns and the following geometry: * device size: 2 MiB * eraseblock size: 128 kiB * page size: 2 kiB ============= Normal read @ 33MHz ================= mtd_speedtest: eraseblock read speed is 15633 KiB/s mtd_speedtest: page read speed is 15515 KiB/s mtd_speedtest: 2 page read speed is 15398 KiB/s =================================================== ========= Sequential cache read @ 33MHz =========== mtd_speedtest: eraseblock read speed is 18285 KiB/s mtd_speedtest: page read speed is 15875 KiB/s mtd_speedtest: 2 page read speed is 16253 KiB/s =================================================== We observe an overall speed improvement of about 5% when reading 2 pages, up to 15% when reading an entire block. This is due to the ~14us gain on each additional page read (tR - (tRCBSY + tRR)). Co-developed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: JaimeLiao <jaimeliao.tw@gmail.com> Tested-by: Liao Jaime <jaimeliao.tw@gmail.com> Link: https://lore.kernel.org/linux-mtd/20230112093637.987838-4-miquel.raynal@bootlin.com
2023-01-13mtd: rawnand: Check the data only read pattern only onceMiquel Raynal1-0/+8
Instead of checking if a pattern is supported each time we need it, let's create a bitfield that only the core would be allowed to fill at startup time. The core and the individual drivers may then use it in order to check what operation they should use. This bitfield is supposed to grow over time. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Tested-by: Liao Jaime <jaimeliao.tw@gmail.com> Link: https://lore.kernel.org/linux-mtd/20230112093637.987838-2-miquel.raynal@bootlin.com
2023-01-02mtd: cfi: allow building spi-intel standaloneArnd Bergmann1-1/+0
When MTD or MTD_CFI_GEOMETRY is disabled, the spi-intel driver fails to build, as it includes the shared CFI header: include/linux/mtd/cfi.h:62:2: error: #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work. [-Werror=cpp] 62 | #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work. linux/mtd/spi-nor.h does not actually need to include cfi.h, so remove the inclusion here to fix the warning. This uncovers a missing #include in spi-nor/core.c so add that there to prevent a different build issue. Fixes: e23e5a05d1fd ("mtd: spi-nor: intel-spi: Convert to SPI MEM") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Tokunori Ikegami <ikegami.t@gmail.com> Acked-by: Pratyush Yadav <pratyush@kernel.org> Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20221220141352.1486360-1-arnd@kernel.org
2022-12-05Merge tag 'spi-nor/for-6.2' into mtd/nextMiquel Raynal1-0/+3
SPI NOR core changes: * Add support for flash reset using the dt reset-gpios property. * Update hwcaps.mask to include 8D-8D-8D read and page program ops when xSPI profile 1.0 table is defined. * Bypass zero erase size in spi_nor_find_best_erase_type(). * Fix select_uniform_erase to skip 0 erase size * Add generic flash driver. If a flash is not found in the flash_info array, fall back to the generic flash driver which is described solely by the flash's SFDP tables. * Fix the number of bytes for the dummy cycles in spi_nor_spimem_check_readop(). * Introduce SPI_NOR_QUAD_PP flag, as PP_1_1_4 is not SFDP discoverable. SPI NOR manufacturer drivers changes: * Spansion: - use PARSE_SFDP for s28hs512t, - add support for s28hl512t, s28hl01gt, and s28hs01gt. * Gigadevice: Replace default_init() with post_bfpt() for gd25q256. * Micron - ST: Enable locking for mt25qu256a. * Winbond: Add support for W25Q512NW-IQ. * ISSI: Use PARSE_SFDP and SPI_NOR_QUAD_PP. Fix merge conflict in the jedec,spi-nor bindings. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2022-11-21mtd: spi-nor: remember full JEDEC flash IDMichael Walle1-0/+3
At the moment, we print the JEDEC ID that is stored in our database. The generic flash support won't have such an entry in our database. To find out the JEDEC ID later we will have to cache it. There is also another advantage: If the flash is found in the database, the ID could be truncated because the ID of the entry is used which can be shorter. Some flashes still holds valuable information in the bytes after the JEDEC ID and come in handy during debugging of when coping with INFO6() entries. These are not accessible for now. Save a copy of the ID bytes after reading and display it via debugfs. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com> Link: https://lore.kernel.org/r/20220810220654.1297699-4-michael@walle.cc
2022-11-07mtd: nand: drop EXPORT_SYMBOL_GPL for nanddev_erase()Dario Binacchi1-1/+0
This function is only used within this module, so it is no longer necessary to use EXPORT_SYMBOL_GPL(). Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20221018170205.1733958-1-dario.binacchi@amarulasolutions.com
2022-10-08Merge tag 'char-misc-6.1-rc1' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc and other driver updates from Greg KH: "Here is the large set of char/misc and other small driver subsystem changes for 6.1-rc1. Loads of different things in here: - IIO driver updates, additions, and changes. Probably the largest part of the diffstat - habanalabs driver update with support for new hardware and features, the second largest part of the diff. - fpga subsystem driver updates and additions - mhi subsystem updates - Coresight driver updates - gnss subsystem updates - extcon driver updates - icc subsystem updates - fsi subsystem updates - nvmem subsystem and driver updates - misc driver updates - speakup driver additions for new features - lots of tiny driver updates and cleanups All of these have been in the linux-next tree for a while with no reported issues" * tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (411 commits) w1: Split memcpy() of struct cn_msg flexible array spmi: pmic-arb: increase SPMI transaction timeout delay spmi: pmic-arb: block access for invalid PMIC arbiter v5 SPMI writes spmi: pmic-arb: correct duplicate APID to PPID mapping logic spmi: pmic-arb: add support to dispatch interrupt based on IRQ status spmi: pmic-arb: check apid against limits before calling irq handler spmi: pmic-arb: do not ack and clear peripheral interrupts in cleanup_irq spmi: pmic-arb: handle spurious interrupt spmi: pmic-arb: add a print in cleanup_irq drivers: spmi: Directly use ida_alloc()/free() MAINTAINERS: add TI ECAP driver info counter: ti-ecap-capture: capture driver support for ECAP Documentation: ABI: sysfs-bus-counter: add frequency & num_overflows items dt-bindings: counter: add ti,am62-ecap-capture.yaml counter: Introduce the COUNTER_COMP_ARRAY component type counter: Consolidate Counter extension sysfs attribute creation counter: Introduce the Count capture component counter: 104-quad-8: Add Signal polarity component counter: Introduce the Signal polarity component counter: interrupt-cnt: Implement watch_validate callback ...
2022-09-24mtd: allow getting MTD device associated with a specific DT nodeRafał Miłecki1-0/+1
MTD subsystem API allows interacting with MTD devices (e.g. reading, writing, handling bad blocks). So far a random driver could get MTD device only by its name (get_mtd_device_nm()). This change allows getting them also by a DT node. This API is required for drivers handling DT defined MTD partitions in a specific way (e.g. U-Boot (sub)partition with environment variables). Acked-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20220916122100.170016-3-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-21mtd: add ECC error accounting for each read requestMichał Kępień1-0/+2
Extend struct mtd_req_stats with two new fields holding the number of corrected bitflips and uncorrectable errors detected during a read operation. This is a prerequisite for ultimately passing those counters to user space, where they can be useful to applications for making better-informed choices about moving data around. Unlike 'max_bitflips' (which is set - in a common code path - to the return value of a function called while the MTD device's mutex is held), these counters have to be maintained in each MTD driver which defines the '_read_oob' callback because the statistics need to be calculated while the MTD device's mutex is held. Suggested-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Michał Kępień <kernel@kempniu.pl> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20220629125737.14418-4-kernel@kempniu.pl
2022-09-21mtd: track maximum number of bitflips for each read requestMichał Kępień1-0/+5
mtd_read_oob() callers are currently oblivious to the details of ECC errors detected during the read operation - they only learn (through the return value) whether any corrected bitflips or uncorrectable errors occurred. More detailed ECC information can be useful to user-space applications for making better-informed choices about moving data around. Extend struct mtd_oob_ops with a pointer to a newly-introduced struct mtd_req_stats and set its 'max_bitflips' field to the maximum number of bitflips found in a single ECC step during the read operation performed by mtd_read_oob(). This is a prerequisite for ultimately passing that value back to user space. Suggested-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Michał Kępień <kernel@kempniu.pl> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20220629125737.14418-2-kernel@kempniu.pl
2022-08-01Merge tag 'spi-nor/for-5.20' into mtd/nextRichard Weinberger1-2/+2
SPI NOR core changes: - move SECT_4K_PMC flag out of the core as it's a vendor specific flag - s/addr_width/addr_nbytes: address width means the number of IO lines used for the address, whereas in the code it is used as the number of address bytes. - do not change nor->addr_nbytes at SFDP parsing time. At the SFDP parsing time we should not change members of struct spi_nor, but instead fill members of struct spi_nor_flash_parameters which could later on be used by the callers. - track flash's internal address mode so that we can use 4B opcodes together with opcodes that don't have a 4B opcode correspondent. SPI NOR manufacturer drivers changes: - esmt: Rename "f25l32qa" flash name to "f25l32qa-2s". - micron-st: Skip FSR reading if SPI controller does not support it to allow flashes that support FSR to work even when attached to such SPI controllers. - spansion: Add s25hl-t/s25hs-t IDs and fixups.
2022-08-01Merge remote-tracking branch 'korg_git/nand/next' into mtd/nextRichard Weinberger1-0/+1
2022-07-28mtd: spi-nor: s/addr_width/addr_nbytesTudor Ambarus1-2/+2
Address width was an unfortunate name, as it means the number of IO lines used for the address, whereas in the code it is used as the number of address bytes. s/addr_width/addr_nbytes throughout the entire SPI NOR framework. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Michael Walle <michael@walle.cc> Acked-by: Pratyush Yadav <p.yadav@ti.com> Link: https://lore.kernel.org/r/20220725092505.446315-2-tudor.ambarus@microchip.com
2022-06-09mtd: hyperbus: Make hyperbus_unregister_device() return voidUwe Kleine-König1-3/+1
The only thing that could theoretically fail in that function is mtd_device_unregister(). However it's not supposed to fail and when used correctly it doesn't. So wail loudly if it does anyhow. This matches how other drivers (e.g. nand/raw/nandsim.c) use mtd_device_unregister(). This is a preparation for making platform remove callbacks return void. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20220603210758.148493-2-u.kleine-koenig@pengutronix.de
2022-06-06mtd: spinand: Add support for ATO25D1GAAidan MacDonald1-0/+1
Add support for the ATO25D1GA SPI NAND flash. Datasheet: - https://atta.szlcsc.com/upload/public/pdf/source/20191212/C469320_04599D67B03B078044EB65FF5AEDDDE9.pdf Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20220604113250.4745-1-aidanmacdonald.0x0@gmail.com
2022-05-25Merge tag 'mtd/for-5.19' of ↵Linus Torvalds4-2/+51
git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux Pull mtd updates from Miquel Raynal: "MTD core changes: - Call of_platform_populate() for MTD partitions - Check devicetree alias for index - mtdoops: - Add a timestamp to the mtdoops header. - Create a header structure for the saved mtdoops. - Fix the size of the header read buffer. - mtdblock: Warn if opened on NAND - Bindings: - reserved-memory: Support MTD/block device - jedec,spi-nor: remove unneeded properties - Extend fixed-partitions binding - Add Sercomm (Suzhou) Corporation vendor prefix MTD driver changes: - st_spi_fsm: add missing clk_disable_unprepare() in stfsm_remove() - phram: - Allow cached mappings - Allow probing via reserved-memory - maps: ixp4xx: Drop driver - bcm47xxpart: Print correct offset on read error CFI driver changes: - Rename chip_ready variables - Add S29GL064N ID definition - Use chip_ready() for write on S29GL064N - Move and rename chip_check/chip_ready/chip_good_for_write NAND core changes: - Print offset instead of page number for bad blocks Raw NAND controller drivers: - Cadence: Fix possible null-ptr-deref in cadence_nand_dt_probe() - CS553X: simplify the return expression of cs553x_write_ctrl_byte() - Davinci: Remove redundant unsigned comparison to zero - Denali: Use managed device resources - GPMI: - Add large oob bch setting support - Rename the variable ecc_chunk_size - Uninline the gpmi_check_ecc function - Add strict ecc strength check - Refactor BCH geometry settings function - Intel: Fix possible null-ptr-deref in ebu_nand_probe() - MPC5121: Check before clk_disable_unprepare() not needed - Mtk: - MTD_NAND_ECC_MEDIATEK should depend on ARCH_MEDIATEK - Also parse the default nand-ecc-engine property if available - Make mtk_ecc.c a separated module - OMAP ELM: - Convert the bindings to yaml - Describe the bindings for AM64 ELM - Add support for its compatible - Renesas: Use runtime PM instead of the raw clock API and update the bindings accordingly - Rockchip: Check before clk_disable_unprepare() not needed - TMIO: Check return value after calling platform_get_resource() Raw NAND chip driver: - Kioxia: Add support for TH58NVG3S0HBAI4 and TC58NVG0S3HTA00 SPI-NAND chip drivers: - Gigadevice: - Add support for: - GD5FxGM7xExxG - GD5F{2,4}GQ5xExxG - GD5F1GQ5RExxG - GD5FxGQ4xExxG - Fix Quad IO for GD5F1GQ5UExxG - XTX: Add support for XT26G0xA SPI NOR core changes: - Read back written SR value to make sure the write was done correctly. - Introduce a common function for Read ID that manufacturer drivers can use to verify the Octal DTR switch worked correctly. - Add helpers for read/write any register commands so manufacturer drivers don't open code it every time. - Clarify rdsr dummy cycles documentation. - Add debugfs entry to expose internal flash parameters and state. SPI NOR manufacturer drivers changes: - Add support for Winbond W25Q512NW-IM, and Eon EN25QH256A. - Move spi_nor_write_ear() to Winbond module since only Winbond flashes use it. - Rework Micron and Cypress Octal DTR enable methods to improve readability. - Use the common Read ID function to verify switch to Octal DTR mode for Micron and Cypress flashes. - Skip polling status on volatile register writes for Micron and Cypress flashes since the operation is instant" * tag 'mtd/for-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (68 commits) mtd: st_spi_fsm: add missing clk_disable_unprepare() in stfsm_remove() dt-bindings: mtd: partitions: Extend fixed-partitions binding dt-bindings: Add Sercomm (Suzhou) Corporation vendor prefix mtd: phram: Allow cached mappings mtd: call of_platform_populate() for MTD partitions mtd: rawnand: renesas: Use runtime PM instead of the raw clock API dt-bindings: mtd: renesas: Fix the NAND controller description mtd: rawnand: mpc5121: Check before clk_disable_unprepare() not needed mtd: rawnand: rockchip: Check before clk_disable_unprepare() not needed mtd: nand: MTD_NAND_ECC_MEDIATEK should depend on ARCH_MEDIATEK mtd: rawnand: cs553x: simplify the return expression of cs553x_write_ctrl_byte() mtd: rawnand: kioxia: Add support for TH58NVG3S0HBAI4 mtd: spi-nor: debugfs: fix format specifier mtd: spi-nor: support eon en25qh256a variant mtd: spi-nor: winbond: add support for W25Q512NW-IM mtd: spi-nor: expose internal parameters via debugfs mtd: spi-nor: export spi_nor_hwcaps_pp2cmd() mtd: spi-nor: move spi_nor_write_ear() to winbond module mtd: spi-nor: amend the rdsr dummy cycles documentation mtd: cfi_cmdset_0002: Rename chip_ready variables ...
2022-05-20Merge tag 'nand/for-5.19' into mtd/nextMiquel Raynal2-0/+48
NAND core: * Print offset instead of page number for bad blocks Raw NAND controller drivers: * Cadence: Fix possible null-ptr-deref in cadence_nand_dt_probe() * CS553X: simplify the return expression of cs553x_write_ctrl_byte() * Davinci: Remove redundant unsigned comparison to zero * Denali: Use managed device resources * GPMI: - Add large oob bch setting support - Rename the variable ecc_chunk_size - Uninline the gpmi_check_ecc function - Add strict ecc strength check - Refactor BCH geometry settings function * Intel: Fix possible null-ptr-deref in ebu_nand_probe() * MPC5121: Check before clk_disable_unprepare() not needed * Mtk: - MTD_NAND_ECC_MEDIATEK should depend on ARCH_MEDIATEK - Also parse the default nand-ecc-engine property if available - Make mtk_ecc.c a separated module * OMAP ELM: - Convert the bindings to yaml - Describe the bindings for AM64 ELM - Add support for its compatible * Renesas: Use runtime PM instead of the raw clock API and update the bindings accordingly * Rockchip: Check before clk_disable_unprepare() not needed * TMIO: Check return value after calling platform_get_resource() Raw NAND chip driver: * Kioxia: Add support for TH58NVG3S0HBAI4 and TC58NVG0S3HTA00 SPI-NAND chip drivers: * Gigadevice: - Add support for: - GD5FxGM7xExxG - GD5F{2,4}GQ5xExxG - GD5F1GQ5RExxG - GD5FxGQ4xExxG - Fix Quad IO for GD5F1GQ5UExxG * XTX: Add support for XT26G0xA Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2022-05-20Merge tag 'spi-nor/for-5.19' into mtd/nextMiquel Raynal1-2/+2
SPI NOR core changes: - Read back written SR value to make sure the write was done correctly. - Introduce a common function for Read ID that manufacturer drivers can use to verify the Octal DTR switch worked correctly. - Add helpers for read/write any register commands so manufacturer drivers don't open code it every time. - Clarify rdsr dummy cycles documentation. - Add debugfs entry to expose internal flash parameters and state. SPI NOR manufacturer drivers changes: - Add support for Winbond W25Q512NW-IM, and Eon EN25QH256A. - Move spi_nor_write_ear() to Winbond module since only Winbond flashes use it. - Rework Micron and Cypress Octal DTR enable methods to improve readability. - Use the common Read ID function to verify switch to Octal DTR mode for Micron and Cypress flashes. - Skip polling status on volatile register writes for Micron and Cypress flashes since the operation is instant. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2022-05-09mtd: spi-nor: expose internal parameters via debugfsMichael Walle1-0/+2
There is no way to gather all information to verify support for a new flash chip. Also if you want to convert an existing flash chip to the new SFDP parsing, there is not enough information to determine if the flash will work like before. To ease this development, expose internal parameters via the debugfs. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Pratyush Yadav <p.yadav@ti.com> Reviewed-by: Pratyush Yadav <p.yadav@ti.com> Link: https://lore.kernel.org/r/20220429102018.2361038-2-michael@walle.cc
2022-05-02mtd: spi-nor: move spi_nor_write_ear() to winbond moduleMichael Walle1-2/+0
The "Extended Address Register" is winbond specific. If the flash is larger than 16MiB and is used in 3 byte address mode, it is used to set the remaining address bits. Move the write_ear() function, the opcode macros and the spimem op template into the winbond module and rename them accordingly. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Pratyush Yadav <p.yadav@ti.com> Reviewed-by: Pratyush Yadav <p.yadav@ti.com> Link: https://lore.kernel.org/r/20220429100153.2338501-1-michael@walle.cc
2022-04-28mtd: cfi_cmdset_0002: Use chip_ready() for write on S29GL064NTokunori Ikegami1-0/+1
Since commit dfeae1073583("mtd: cfi_cmdset_0002: Change write buffer to check correct value") buffered writes fail on S29GL064N. This is because, on S29GL064N, reads return 0xFF at the end of DQ polling for write completion, where as, chip_good() check expects actual data written to the last location to be returned post DQ polling completion. Fix is to revert to using chip_good() for S29GL064N which only checks for DQ lines to settle down to determine write completion. Link: https://lore.kernel.org/r/b687c259-6413-26c9-d4c9-b3afa69ea124@pengutronix.de/ Fixes: dfeae1073583("mtd: cfi_cmdset_0002: Change write buffer to check correct value") Cc: stable@vger.kernel.org Signed-off-by: Tokunori Ikegami <ikegami.t@gmail.com> Acked-by: Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20220323170458.5608-3-ikegami.t@gmail.com
2022-04-27Merge tag 'mtd/mtk-spi-nand-for-5.19' into nand/nextMiquel Raynal1-0/+47
Mediatek ECC changes: * Also parse the default nand-ecc-engine property if available * Make mtk_ecc.c a separated module Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2022-04-27mtd: nand: make mtk_ecc.c a separated moduleChuanhong Guo1-0/+47
this code will be used in mediatek snfi spi-mem controller with pipelined ECC engine. Signed-off-by: Chuanhong Guo <gch981213@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20220424032527.673605-2-gch981213@gmail.com
2022-04-21mtd: spinand: Add support for XTX XT26G0xAFelix Matouschek1-0/+1
Add support for XTX Technology XT26G01AXXXXX, XTX26G02AXXXXX and XTX26G04AXXXXX SPI NAND. These are 3V, 1G/2G/4Gbit serial SLC NAND flash devices with on-die ECC (8bit strength per 512bytes). Tested on Teltonika RUTX10 flashed with OpenWrt. Links: - http://www.xtxtech.com/download/?AId=225 - https://datasheet.lcsc.com/szlcsc/2005251034_XTX-XT26G01AWSEGA_C558841.pdf Signed-off-by: Felix Matouschek <felix@matouschek.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20220418132803.664103-1-felix@matouschek.org
2022-04-21mtd: fix 'part' field data corruption in mtd_infoOleksandr Ocheretnyi1-4/+2
Commit 46b5889cc2c5 ("mtd: implement proper partition handling") started using "mtd_get_master_ofs()" in mtd callbacks to determine memory offsets by means of 'part' field from mtd_info, what previously was smashed accessing 'master' field in the mtd_set_dev_defaults() method. That provides wrong offset what causes hardware access errors. Just make 'part', 'master' as separate fields, rather than using union type to avoid 'part' data corruption when mtd_set_dev_defaults() is called. Fixes: 46b5889cc2c5 ("mtd: implement proper partition handling") Signed-off-by: Oleksandr Ocheretnyi <oocheret@cisco.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20220417184649.449289-1-oocheret@cisco.com
2022-03-23Merge tag 'nand/for-5.18' into mtd/nextMiquel Raynal1-0/+2
Raw NAND core changes: * Rework of_get_nand_bus_width() * Remove of_get_nand_on_flash_bbt() wrapper * Protect access to rawnand devices while in suspend * bindings: Document the wp-gpios property Rax NAND controller driver changes: * atmel: Fix refcount issue in atmel_nand_controller_init * nandsim: - Add NS_PAGE_BYTE_SHIFT macro to replace the repeat pattern - Merge repeat codes in ns_switch_state - Replace overflow check with kzalloc to single kcalloc * rockchip: Fix platform_get_irq.cocci warning * stm32_fmc2: Add NAND Write Protect support * pl353: Set the nand chip node as the flash node * brcmnand: Fix sparse warnings in bcma_nand * omap_elm: Remove redundant variable 'errors' * gpmi: - Support fast edo timings for mx28 - Validate controller clock rate - Fix controller timings setting * brcmnand: - Add BCMA shim - BCMA controller uses command shift of 0 - Allow platform data instantation - Add platform data structure for BCMA - Allow working without interrupts - Move OF operations out of brcmnand_init_cs() - Avoid pdev in brcmnand_init_cs() - Allow SoC to provide I/O operations - Assign soc as early as possible Onenand changes: * Check for error irq Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
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