- 03 10月, 2018 5 次提交
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由 Miquel Raynal 提交于
There should not be a 'nand' command, a 'sf' command and certainly not a new 'spi-nand' command. Write a 'mtd' command instead to manage all MTD devices/partitions at once. This should be the preferred way to access any MTD device. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Acked-by: NJagan Teki <jagan@openedev.com> Reviewed-by: NStefan Roese <sr@denx.de> Reviewed-by: NBoris Brezillon <boris.brezillon@bootlin.com>
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由 Miquel Raynal 提交于
Instead of collecting partitions in a flat list, create a hierarchy within the mtd_info structure: use a partitions list to keep track of the partitions of an MTD device (which might be itself a partition of another MTD device), a pointer to the parent device (NULL when the MTD device is the root one, not a partition). By also saving directly in mtd_info the offset of the partition, we can get rid of the mtd_part structure. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: NStefan Roese <sr@denx.de> Reviewed-by: NBoris Brezillon <boris.brezillon@bootlin.com>
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由 Miquel Raynal 提交于
Using an MTD device (resp. partition) name in mtdparts is simple and straightforward. However, for a long time already, another name was given in mtdparts to indicate a device (resp. partition) so the "mtdids" environment variable was created to do the match. Let's create a function that, from an MTD device (resp. partition) name, search for the equivalent name in the "mtdparts" environment variable thanks to the "mtdids" string. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: NStefan Roese <sr@denx.de> Reviewed-by: NBoris Brezillon <boris.brezillon@bootlin.com>
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由 Miquel Raynal 提交于
The current parser is very specific to U-Boot mtdparts implementation. It does not use MTD structures like mtd_info and mtd_partition. Copy and adapt the current parser in drivers/mtd/mtd-uclass.c (to not break the current use of mtdparts.c itself) and write some kind of a wrapper around the current implementation to allow other commands to benefit from this parsing in a user-friendly way. This new function will allocate an mtd_partition array for each successful call. This array must be freed after use by the caller. The given 'mtdparts' buffer pointer will be moved forward to the next MTD device (if any, it will point towards a '\0' character otherwise). Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Acked-by: NJagan Teki <jagan@openedev.com> Reviewed-by: NStefan Roese <sr@denx.de> Reviewed-by: NBoris Brezillon <boris.brezillon@bootlin.com>
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由 Miquel Raynal 提交于
The user might want to trigger the probe of any MTD device, export these functions so they can be called from a command source file. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Acked-by: NJagan Teki <jagan@openedev.com> Reviewed-by: NStefan Roese <sr@denx.de> Reviewed-by: NBoris Brezillon <boris.brezillon@bootlin.com>
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- 20 9月, 2018 16 次提交
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由 Miquel Raynal 提交于
Balance debug message in the partition allocation/removal process in order to keep track of them more easily. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
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由 Miquel Raynal 提交于
UBI selects MTD_PARTITIONS which is the symbol to compile drivers/mtd/mtdpart.c. Unfortunately, the symbol was not defined in Kconfig and this worked only with board files defining it. Fix this by adding a boolean in Kconfig so boards defined by defconfig files only will work as expected. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: NBoris Brezillon <boris.brezillon@bootlin.com>
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由 Miquel Raynal 提交于
Add support for the MX35LF2GE4AB chip, which is similar to its cousin MX35LF1GE4AB, with two planes instead of one. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Acked-by: NJagan Teki <jagan@openedev.com>
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由 Boris Brezillon 提交于
Add minimal support for the MX35LF1GE4AB SPI NAND chip. Signed-off-by: NBoris Brezillon <boris.brezillon@bootlin.com> Acked-by: NJagan Teki <jagan@openedev.com>
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由 Frieder Schrempf 提交于
Add support for the W25M02GV chip. Signed-off-by: NFrieder Schrempf <frieder.schrempf@exceet.de> Signed-off-by: NBoris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Acked-by: NJagan Teki <jagan@openedev.com>
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由 Peter Pan 提交于
Add a basic driver for Micron SPI NANDs. Only one device is supported right now, but the driver will be extended to support more devices afterwards. Signed-off-by: NPeter Pan <peterpandong@micron.com> Signed-off-by: NBoris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Acked-by: NJagan Teki <jagan@openedev.com>
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由 Peter Pan 提交于
Add a SPI NAND framework based on the generic NAND framework and the spi-mem infrastructure. In its current state, this framework supports the following features: - single/dual/quad IO modes - on-die ECC Signed-off-by: NPeter Pan <peterpandong@micron.com> Signed-off-by: NBoris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Acked-by: NJagan Teki <jagan@openedev.com>
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由 Boris Brezillon 提交于
Add an intermediate layer to abstract NAND device interface so that some logic can be shared between SPI NANDs, parallel/raw NANDs, OneNANDs, ... Signed-off-by: NBoris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Acked-by: NJagan Teki <jagan@openedev.com>
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由 Miquel Raynal 提交于
Sync the Kconfig raw NAND entry title with the code architecture. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
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由 Miquel Raynal 提交于
NAND flavors, like serial and parallel, have a lot in common and would benefit to share code. Let's move raw (parallel) NAND specific code in a raw/ subdirectory, to ease the addition of a core file in nand/ and the introduction of a spi/ subdirectory specific to SPI NANDs. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
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由 Miquel Raynal 提交于
There is no reason to have NAND, SPI flashes and UBI sections outside of the MTD submenu in Kconfig. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: NJagan Teki <jagan@openedev.com>
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由 Miquel Raynal 提交于
Some helpers might be useful in a future 'mtd' U-Boot command to parse MTD device list. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
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由 Miquel Raynal 提交于
Some MTD sublayers/drivers are implementing ->_read/write() and not ->_read/write_oob(). While for NAND devices both are usually valid, for NOR devices, using the _oob variant has no real meaning. But, as the MTD layer is supposed to hide as much as possible the flash complexity to the user, there is no reason to error out while it is just a matter of rewritting things internally. Add a fallback on mtd->_read() (resp. mtd->_write()) when the user calls mtd_read_oob() (resp. mtd_write_oob()) while mtd->_read_oob() (resp. mtd->_write_oob) is not implemented. There is already a fallback on the _oob variant if the former is used. Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: NBoris Brezillon <boris.brezillon@bootlin.com>
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由 Boris Brezillon 提交于
Unlike what's done in mtd_read/write(), there are no checks to make sure the parameters passed to mtd_read/write_oob() are consistent, which forces implementers of ->_read/write_oob() to do it, which in turn leads to code duplication and possibly errors in the logic. Do general sanity checks, like ops fields consistency and range checking. Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com> Cc: Peter Pan <peterpandong@micron.com> Signed-off-by: NRichard Weinberger <richard@nod.at> [Miquel: squashed the fix about the chip's size check] Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
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由 Ezequiel Garcia 提交于
There's no reason for having mtd_write_oob inlined in mtd.h header. Move it to mtdcore.c where it belongs. Signed-off-by: NEzequiel Garcia <ezequiel@vanguardiasur.com.ar> Acked-by: NBoris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: NJacek Anaszewski <j.anaszewski@samsung.com> Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
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由 Boris Brezillon 提交于
Some MTD sublayers/drivers are implementing ->_read/write_oob() and provide dummy wrappers for their ->_read/write() implementations. Let the core handle this case instead of duplicating the logic. Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com> Acked-by: NRobert Jarzmik <robert.jarzmik@free.fr> Acked-by: NBrian Norris <computersforpeace@gmail.com> Reviewed-by: NMiquel Raynal <miquel.raynal@free-electrons.com> Tested-by: NLadislav Michl <ladis@linux-mips.org> Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: NJagan Teki <jagan@openedev.com>
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- 19 9月, 2018 17 次提交
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由 David Sniatkiwicz 提交于
add delay before processing the status flags in pxa3xx_nand_irq(). Signed-off-by: NDavid Sniatkiwicz <davidsn@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Reviewed-by: NKostya Porotchkin <kostap@marvell.com> c: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Konstantin Porotchkin 提交于
Add support for NAND chips with 8KB page, 4 and 8 bit ECC (ONFI). Signed-off-by: NKonstantin Porotchkin <kostap@marvell.com> Reviewed-by: NOfer Heifetz <oferh@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Konstantin Porotchkin 提交于
Add comments with timing parameter names and some details about nand layout fileds. Remove unneeded definition. Signed-off-by: NKonstantin Porotchkin <kostap@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Konstantin Porotchkin 提交于
Replace the hardcoded value of page chink with value that depends on flash page size and ECC strength. This fixes nand access errors for 2K page flashes with 8-bit ECC. Move the initial flash commannd function assignment past the ECC structures initialization for eliminating usage of hardcoded page chunk size value. Signed-off-by: NKonstantin Porotchkin <kostap@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Konstantin Porotchkin 提交于
Add timings and device ID for Toshiba TC58NVG1S3HTA00 flash Signed-off-by: NKonstantin Porotchkin <kostap@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Victor Axelrod 提交于
Add support for 2KB page 8-bit ECC strength flash layout Signed-off-by: NVictor Axelrod <victora@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Boris Brezillon 提交于
In the current driver, OOB bytes are accessed in raw mode, and when a page access is done with NDCR_SPARE_EN set and NDCR_ECC_EN cleared, the driver must read the whole spare area (64 bytes in case of a 2k page, 16 bytes for a 512 page). The driver was only reading the free OOB bytes, which was leaving some unread data in the FIFO and was somehow leading to a timeout. We could patch the driver to read ->spare_size + ->ecc_size instead of just ->spare_size when READOOB is requested, but we'd better make in-band and OOB accesses consistent. Since the driver is always accessing in-band data in non-raw mode (with the ECC engine enabled), we should also access OOB data in this mode. That's particularly useful when using the BCH engine because in this mode the free OOB bytes are also ECC protected. Fixes: 43bcfd2bb24a ("mtd: nand: pxa3xx: Add driver-specific ECC BCH support") Cc: stable@vger.kernel.org Reported-by: NSean Nyekjær <sean.nyekjaer@prevas.dk> Tested-by: NWilly Tarreau <w@1wt.eu> Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com> Acked-by: NEzequiel Garcia <ezequiel@vanguardiasur.com.ar> Tested-by: NSean Nyekjaer <sean.nyekjaer@prevas.dk> Acked-by: NRobert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: NRichard Weinberger <richard@nod.at> Signed-off-by: NOfer Heifetz <oferh@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Ofer Heifetz 提交于
This commit is needed to properly support the 8-bits ECC configuration with 4KB pages. When pages larger than 2 KB are used on platforms using the PXA3xx NAND controller, the reading/programming operations need to be split in chunks of 2 KBs or less because the controller FIFO is limited to about 2 KB (i.e a bit more than 2 KB to accommodate OOB data). Due to this requirement, the data layout on NAND is a bit strange, with ECC interleaved with data, at the end of each chunk. When a 4-bits ECC configuration is used with 4 KB pages, the physical data layout on the NAND looks like this: | 2048 data | 32 spare | 30 ECC | 2048 data | 32 spare | 30 ECC | So the data chunks have an equal size, 2080 bytes for each chunk, which the driver supports properly. When a 8-bits ECC configuration is used with 4KB pages, the physical data layout on the NAND looks like this: | 1024 data | 30 ECC | 1024 data | 30 ECC | 1024 data | 30 ECC | 1024 data | 30 ECC | 64 spare | 30 ECC | So, the spare area is stored in its own chunk, which has a different size than the other chunks. Since OOB is not used by UBIFS, the initial implementation of the driver has chosen to not support reading this additional "spare" chunk of data. Unfortunately, Marvell has chosen to store the BBT signature in the OOB area. Therefore, if the driver doesn't read this spare area, Linux has no way of finding the BBT. It thinks there is no BBT, and rewrites one, which U-Boot does not recognize, causing compatibility problems between the bootloader and the kernel in terms of NAND usage. To fix this, this commit implements the support for reading a partial last chunk. This support is currently only useful for the case of 8 bits ECC with 4 KB pages, but it will be useful in the future to enable other configurations such as 12 bits and 16 bits ECC with 4 KB pages, or 8 bits ECC with 8 KB pages, etc. All those configurations have a "last" chunk that doesn't have the same size as the other chunks. In order to implement reading of the last chunk, this commit: - Adds a number of new fields to the pxa3xx_nand_info to describe how many full chunks and how many chunks we have, the size of full chunks and partial chunks, both in terms of data area and spare area. - Fills in the step_chunk_size and step_spare_size variables to describe how much data and spare should be read/written for the current read/program step. - Reworks the state machine to accommodate doing the additional read or program step when a last partial chunk is used. This commit is taken from Linux: 'commit c2cdace755b' ("mtd: nand: pxa3xx_nand: add support for partial chunks") Signed-off-by: NChris Packham <judge.packham@gmail.com> Signed-off-by: NOfer Heifetz <oferh@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Ofer Heifetz 提交于
This commit simplifies the initial configuration performed by pxa3xx_nand_scan. No functionality change is intended. This commit is taken from Linux: 'commit 154f50fbde53' ("mtd: pxa3xx_nand: Simplify pxa3xx_nand_scan") Signed-off-by: NChris Packham <judge.packham@gmail.com> Signed-off-by: NOfer Heifetz <oferh@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Ofer Heifetz 提交于
The Data Flash Control Register (NDCR) contains two types of parameters: those that are needed for device identification, and those that can only be set after device identification. Therefore, the driver can't set them all at once and instead needs to configure the first group before nand_scan_ident() and the second group later. Let's split pxa3xx_nand_config in two halves, and set the parameters that depend on the device geometry once this is known. This commit is taken from Linux: 'commit 66e8e47eae65' ("mtd: pxa3xx_nand: Fix initial controller configuration") Signed-off-by: NChris Packham <judge.packham@gmail.com> Signed-off-by: NOfer Heifetz <oferh@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Ofer Heifetz 提交于
The chunk size represents the size of the data chunks, which is used by the controllers that allow to split transferred data. However, the initial chunk size is used in a non-split way, during device identification. Therefore, it must be large enough for all the NAND commands issued during device identification. This includes NAND_CMD_PARAM which was recently changed to transfer up to 2048 bytes (for the redundant parameter pages). Thus, the initial chunk size should be 2048 as well. On Armada 370/XP platforms (NFCv2) booted without the keep-config devicetree property, this commit fixes a timeout on the NAND_CMD_PARAM command: [..] pxa3xx-nand f10d0000.nand: This platform can't do DMA on this device pxa3xx-nand f10d0000.nand: Wait time out!!! nand: device found, Manufacturer ID: 0x2c, Chip ID: 0x38 nand: Micron MT29F8G08ABABAWP nand: 1024 MiB, SLC, erase size: 512 KiB, page size: 4096, OOB size: 224 This commit is taken from Linux: 'commit c7f00c29aa8' ("mtd: pxa3xx_nand: Increase the initial chunk size") Signed-off-by: NChris Packham <judge.packham@gmail.com> Signed-off-by: NOfer Heifetz <oferh@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Ofer Heifetz 提交于
The read ID count should be made as large as the maximum READ_ID size, so there's no need to have dynamic size. This commit sets the hardware maximum read ID count, which should be more than enough on all cases. Also, we get rid of the read_id_bytes, and use a macro instead. This commit is taken from Linux: 'commit b226eca2088' ("nand: pxa3xx: Increase READ_ID buffer and make the size static") Signed-off-by: NChris Packham <judge.packham@gmail.com> Signed-off-by: NOfer Heifetz <oferh@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Ofer Heifetz 提交于
When 2 commands are submitted in a row, and the second is very quick, the completion of the second command might never come. This happens especially if the second command is quick, such as a status read after an erase This patch is taken from Linux: 'commit 21fc0ef9652f' ("mtd: nand: pxa3xx-nand: fix random command timeouts") Signed-off-by: NChris Packham <judge.packham@gmail.com> Signed-off-by: NOfer Heifetz <oferh@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Ofer Heifetz 提交于
When the nand is first probe, and upon the first command start, the status bits should be cleared before the interrupts are unmasked. This commit is taken from Linux: 'commit 0b14392db2e' ("mtd: nand: pxa3xx_nand: fix early spurious interrupt") Signed-off-by: NChris Packham <judge.packham@gmail.com> Signed-off-by: NOfer Heifetz <oferh@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Ofer Heifetz 提交于
Since the pxa3xx_nand driver was added there has been a discrepancy in pxa3xx_nand_set_sdr_timing() around the setting of tWP_min and tRP_min. This brings us into line with the current Linux code. Signed-off-by: NChris Packham <judge.packham@gmail.com> Signed-off-by: NOfer Heifetz <oferh@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Ofer Heifetz 提交于
Don't store struct mtd_info in struct pxa3xx_nand_host. Instead use the one that is already part of struct nand_chip. This brings us in line with current U-boot and Linux conventions. Signed-off-by: NChris Packham <judge.packham@gmail.com> Signed-off-by: NOfer Heifetz <oferh@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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由 Ofer Heifetz 提交于
The initial buffer is used for the initial commands used to detect a flash device (STATUS, READID and PARAM). ONFI param page is 256 bytes, and there are three redundant copies to be read. JEDEC param page is 512 bytes, and there are also three redundant copies to be read. Hence this buffer should be at least 512 x 3. This commits rounds the buffer size to 2048. This commit is taken from Linux: 'commit c16340973fcb64614' ("nand: pxa3xx: Increase initial buffer size") Signed-off-by: NChris Packham <judge.packham@gmail.com> Signed-off-by: NOfer Heifetz <oferh@marvell.com> Reviewed-by: NIgal Liberman <igall@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: NStefan Roese <sr@denx.de>
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- 11 9月, 2018 1 次提交
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由 Masahiro Yamada 提交于
If the OOB size is not multiple of the cache line size, the ARMv7 cache operation still prints "Misaligned operation at range". => nand info Device 0: nand0, sector size 256 KiB Page size 4096 b OOB size 224 b Erase size 262144 b subpagesize 4096 b options 0x00104200 bbt options 0x00060000 => nand dump 0 CACHE: Misaligned operation at range [9fb15280, 9fb16360] CACHE: Misaligned operation at range [9fb15280, 9fb16360] CACHE: Misaligned operation at range [9fb15280, 9fb16360] CACHE: Misaligned operation at range [9fb15280, 9fb16360] ... The cache flushing operations won't happen in this case to cover all of the range to fix this by making sure we have things aligned. Reported-by: NMarek Vasut <marex@denx.de> Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com> [trini: Reword the commit message to be clear this is a direct problem rather than just a warning]
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- 11 8月, 2018 1 次提交
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由 Darwin Dingel 提交于
This is a fix made for the fsl_ifc_nand driver on linux kernel by Pavel Machek and is applied to uboot. It is currently on applied on linux-mtd. https://patchwork.kernel.org/patch/9758117/ IFC always raises ECC errors on erased pages. It is only ignored when the buffer is checked for all 0xFF by is_blank(). The problem is a single bitflip will cause is_blank() and then mtd_read to fail. The fix makes use of nand_check_erased_ecc_chunk() to check for empty pages instead of is_blank(). This also makes sure that reads are made at ECC page size granularity to get a proper bitflip count. If the number of bitflips does not exceed the ECC strength, the page is considered empty and the bitflips will be corrected when data is sent to the higher layers (e.g. ubi). Signed-off-by: NDarwin Dingel <darwin.dingel@alliedtelesis.co.nz> Cc: Pavel Machek <pavel@denx.de> Cc: Scott Wood <oss@buserror.net> Acked-by: NPavel Machek <pavel@denx.de> [Kurt: Replaced dev_err by printf due to compiler warnings] Tested-by: NKurt Kanzenbach <kurt@linutronix.de> Signed-off-by: NKurt Kanzenbach <kurt@linutronix.de> Reviewed-by: NYork Sun <york.sun@nxp.com>
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