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path: root/drivers/mtd/spi-nor
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2017-06-27mtd: spi-nor: cqspi: remove duplicate constArnd Bergmann1-1/+1
The variable was already marked 'const' before the previous patch, but the qualifier was in an unusual place, and now the extra 'const' causes a harmless warning: drivers/mtd/spi-nor/cadence-quadspi.c:1286:34: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] This removes the other 'const' instead. Fixes: f993c123b461 ("mtd: spi-nor: cqspi: make of_device_ids const") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-06-27mtd: spi-nor: Add support for Spansion S25FL064LHarry Chou1-0/+1
It's an 8 MiB flash with 4 KiB erase sectors. Signed-off-by: Harry Chou <HarryYC.Chou@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-06-26mtd: spi-nor: Add support for mx66u51235fAlexander Sverdlin1-0/+1
This chip supports stateless 4-byte opcodes, dual and quad read and uniform 4K-byte erase. Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-06-22mtd: spi-nor: aspeed: configure chip window on AHB busCédric Le Goater1-3/+154
The segment registers of the SMC controller provide a way to configure the mapping windows of the chips on the AHB bus. The settings are required to be correct when the controller operates in Command mode, which is the case for DMAs and the LPC mapping. This tries to set the segment registers of each chip depending on the size of the flash device and depending on the previous segment settings, in order to have a contiguous window across multiple chips. Unfortunately, the AST2500 SPI controller has a bug and it is not possible to configure a full 128MB window for a chip of the same size. The window size needs to be restricted to 120MB. This issue only applies to CE0. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-06-21mtd: spi-nor: aspeed: remove dummies from keep maskCédric Le Goater1-2/+1
There is no need to keep the dummy bytes in the control register if the command mode is not kept also. This could lead to an inconsistent setting : normal read mode (command 0x3) and dummy bytes. It is to be noted that the HW allows such a configuration. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-06-21mtd: spi-nor: add Dual and Quad read mode support to some flash devicesCédric Le Goater1-4/+4
These devices are used on OpenPOWER systems. The SPI_NOR_DUAL_READ flags is added for the Aspeed SoCs which do not support QUAD reads. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-06-21mtd: spi-nor: Add support for Macronix mx66l1g45g spi flashCédric Le Goater1-0/+1
These modules are used on the OpenPOWER Witherspoon systems to hold the POWER9 host firmware image. The SPI_NOR_DUAL_READ flags is added for the Aspeed SoCs which do not support QUAD reads. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-06-21mtd: spi-nor: cqspi: make of_device_ids constArvind Yadav1-1/+1
of_device_ids are not supposed to change at runtime. All functions working with of_device_ids provided by <linux/of.h> work with const of_device_ids. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-06-21spi-nor: Add Winbond w25m512jvBenjamin Herrenschmidt1-0/+2
Similar to the other ones, different size. The "JV" suffix is in the datasheet, I haven't seen mentions of a different one. The datasheet indicates DUAL and QUAD are supported. http://www.winbond.com/resource-files/w25m512jv%20revc%2001062017.pdf Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-05-15mtd: spi-nor: Potential oops on error path in quad_enable()Dan Carpenter1-2/+3
Before commit cff959958832 ("mtd: spi-nor: introduce SPI 1-2-2 and SPI 1-4-4 protocols") then we treated 1 as -EINVAL in the caller but after that commit we changed to propagate the return. My static checker complains that it's eventually passed to an ERR_PTR() and later dereferenced, but I'm not totally certain if that's true. Regardless, returning 1 is wrong. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-05-15mtd: spi-nor: stm32-quadspi: allow building with COMPILE_TESTBrian Norris1-1/+1
Cc: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-05-15mtd: spi-nor: stm32-quadspi: fix compiler errors with COMPILE_TESTCyrille Pitchen1-2/+3
This patch fixes some compiler errors: - change format strings to use %zx for size_t - add missing #include <linux/sizes.h> Cc: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-05-15mtd: spi-nor: introduce Octo SPI protocolsCyrille Pitchen1-1/+21
This patch starts adding support to Octo SPI protocols (SPI x-y-8). Op codes for Fast Read and/or Page Program operations using Octo SPI protocols are not known yet (no JEDEC specification has defined them yet) but we'd rather introduce the Octo SPI protocols now so it's done as it should be. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
2017-05-15mtd: spi-nor: introduce Double Transfer Rate (DTR) SPI protocolsCyrille Pitchen1-0/+10
This patch introduces support to Double Transfer Rate (DTR) SPI protocols. DTR is used only for Fast Read operations. According to manufacturer datasheets, whatever the number of I/O lines used during instruction (x) and address/mode/dummy (y) clock cycles, DTR is used only during data (z) clock cycles of SPI x-y-z protocols. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
2017-05-15mtd: spi-nor: introduce SPI 1-2-2 and SPI 1-4-4 protocolsCyrille Pitchen10-178/+494
This patch changes the prototype of spi_nor_scan(): its 3rd parameter is replaced by a 'struct spi_nor_hwcaps' pointer, which tells the spi-nor framework about the actual hardware capabilities supported by the SPI controller and its driver. Besides, this patch also introduces a new 'struct spi_nor_flash_parameter' telling the spi-nor framework about the hardware capabilities supported by the SPI flash memory and the associated settings required to use those hardware caps. Then, to improve the readability of spi_nor_scan(), the discovery of the memory settings and the memory initialization are now split into two dedicated functions. 1 - spi_nor_init_params() The spi_nor_init_params() function is responsible for initializing the 'struct spi_nor_flash_parameter'. Currently this structure is filled with legacy values but further patches will allow to override some parameter values dynamically, for instance by reading the JESD216 Serial Flash Discoverable Parameter (SFDP) tables from the SPI memory. The spi_nor_init_params() function only deals with the hardware capabilities of the SPI flash memory: especially it doesn't care about the hardware capabilities supported by the SPI controller. 2 - spi_nor_setup() The second function is called once the 'struct spi_nor_flash_parameter' has been initialized by spi_nor_init_params(). With both 'struct spi_nor_flash_parameter' and 'struct spi_nor_hwcaps', the new argument of spi_nor_scan(), spi_nor_setup() computes the best match between hardware caps supported by both the (Q)SPI memory and controller hence selecting the relevant settings for (Fast) Read and Page Program operations. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
2017-05-11Merge tag 'for-linus-20170510' of git://git.infradead.org/linux-mtdLinus Torvalds7-6/+749
Pull MTD updates from Brian Norris: "NAND, from Boris: - some minor fixes/improvements on existing drivers (fsmc, gpio, ifc, davinci, brcmnand, omap) - a huge cleanup/rework of the denali driver accompanied with core fixes/improvements to simplify the driver code - a complete rewrite of the atmel driver to support new DT bindings make future evolution easier - the addition of per-vendor detection/initialization steps to avoid extending the nand_ids table with more extended-id entries SPI NOR, from Cyrille: - fixes in the hisi, intel and Mediatek SPI controller drivers - fixes to some SPI flash memories not supporting the Chip Erase command. - add support to some new memory parts (Winbond, Macronix, Micron, ESMT). - add new driver for the STM32 QSPI controller And a few fixes for Gemini and Versatile platforms on physmap-of" * tag 'for-linus-20170510' of git://git.infradead.org/linux-mtd: (100 commits) MAINTAINERS: Update NAND subsystem git repositories mtd: nand: gpio: update binding mtd: nand: add ooblayout for old hamming layout mtd: oxnas_nand: Allocating more than necessary in probe() dt-bindings: mtd: Document the STM32 QSPI bindings mtd: mtk-nor: set controller's address width according to nor flash mtd: spi-nor: add driver for STM32 quad spi flash controller mtd: nand: brcmnand: Check flash #WP pin status before nand erase/program mtd: nand: davinci: add comment on NAND subpage write status on keystone mtd: nand: omap2: Fix partition creation via cmdline mtdparts mtd: nand: NULL terminate a of_device_id table mtd: nand: Fix a couple error codes mtd: nand: allow drivers to request minimum alignment for passed buffer mtd: nand: allocate aligned buffers if NAND_OWN_BUFFERS is unset mtd: nand: denali: allow to override revision number mtd: nand: denali_dt: use pdev instead of ofdev for platform_device mtd: nand: denali_dt: remove dma-mask DT property mtd: nand: denali: support 64bit capable DMA engine mtd: nand: denali_dt: enable HW_ECC_FIXUP for Altera SOCFPGA variant mtd: nand: denali: support HW_ECC_FIXUP capability ...
2017-05-01mtd: mtk-nor: set controller's address width according to nor flashGuochun Mao1-0/+27
When nor's size larger than 16MByte, nor's address width maybe set to 3 or 4, and controller should change address width according to nor's setting. Signed-off-by: Guochun Mao <guochun.mao@mediatek.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-05-01mtd: spi-nor: add driver for STM32 quad spi flash controllerLudovic Barre3-0/+701
The quadspi is a specialized communication interface targeting single, dual or quad SPI Flash memories. It can operate in any of the following modes: -indirect mode: all the operations are performed using the quadspi registers -read memory-mapped mode: the external Flash memory is mapped to the microcontroller address space and is seen by the system as if it was an internal memory Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-04-16mtd: spi-nor: enable stateless 4b op codes for mx25u25635fMathias Kresin1-1/+1
All required stateless 4-byte op codes are supported by this flash chip. The stateless 4-byte support can't be autodetected due to a missing 4-byte Address Instruction Table in SFDP. Fixes hangs on reboot for SoCs expecting the flash chip in 3byte mode. Signed-off-by: Mathias Kresin <dev@kresin.me> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-04-11mtd: spi-nor: Add support for N25Q256A11Nobuhiro Iwamatsu1-0/+1
Add new Micron N25Q256A (N25Q256A11) 256Mbit NOR Flash in the list of supported devices. This chip has the same structure as the N25Q256A but ID and voltage (1V8) to use is different. Therefore, this adds N25Q256A11 as n25q256ax1. In the future, for new Micron memories we could use the patterns "n25q*ax1" for 1V8 and "n25q*ax3" for 3V3 memories. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.kw@hitachi.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-03-23drivers mtd: spi-nor: add Macronix MX25Ux033E and MX25Ux035 variantsAlexander Kurz1-0/+3
Macronix MX25U2033E, MX25U4033E and MX25U4035 devices are used in 4/5/6th generation Kindle ebook readers. Both MX25U403x variants share the same JEDEC id. Add those spi-nor variants and the similar MX25U8035 mentioned in the same set of datasheets. Signed-off-by: Alexander Kurz <akurz@blala.de> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-03-23drivers mtd: spi-nor: add Winbond W25Q20 variantsAlexander Kurz1-0/+3
Winbond W25Q20BW devices are used in 4/5th generation Kindle ebook readers. Add this spi-nor device and the similar W25Q20 devices to the list of known devices. Signed-off-by: Alexander Kurz <akurz@blala.de> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-03-22mtd: spi-nor: Disable chip erase for Micron n25q00.mar.krzeminski1-2/+2
Micron n25q00 are stacked chips, thus do not support chip erase. >From now spi-nor framework will not send chip erase command, instead will use sector at time erase procedure. Signed-off-by: Marcin Krzeminski <mar.krzeminski@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-03-22mtd: spi-nor: Fix whole chip erasing for stacked chips.mar.krzeminski1-0/+3
Currently it is possible to disable chip erase for spi-nor driver. Some modern stacked (multi die) flash chips do not support chip erase opcode at all but spi-nor framework needs to cope with them too. This commit extends existing functionality to allow disable chip erase for a single flash chip. Signed-off-by: Marcin Krzeminski <mar.krzeminski@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-03-10scripts/spelling.txt: add "disble(d)" pattern and fix typo instancesMasahiro Yamada1-1/+1
Fix typos and add the following to the scripts/spelling.txt: disble||disable disbled||disabled I kept the TSL2563_INT_DISBLED in /drivers/iio/light/tsl2563.c untouched. The macro is not referenced at all, but this commit is touching only comment blocks just in case. Link: http://lkml.kernel.org/r/1481573103-11329-20-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-03-08mtd: spi-nor: Add support for ESMT F25L32QA and F25L64QAL. D. Pinney1-0/+2
Add support for the ESMT F25L32QA and F25L64QA. These are 4MB and 8MB SPI-NOR Chips from Elite Semiconductor Memory Technology. Signed-off-by: L. D. Pinney <ldpinney@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-03-08mtd: spi-nor: intel: use ERR_CAST in return statementNicholas Mc Guire1-1/+1
This fixes a sparse warning about incorrect type in return expression. Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at> Acked-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-03-08mtd: spi-nor: intel: use true/false for booleanNicholas Mc Guire1-1/+1
writeable in struct intel_spi is a boolean and assignment should be to true/false not 1/0 as recommended by boolinit.cocci. Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at> Acked-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-03-07mtd: spi-nor: hisi: do not ignore clk_prepare_enable() failureAlexey Khoroshilov1-1/+4
hisi_spi_nor_probe() ignores clk_prepare_enable() error code. The patch fixes that. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-02-10mtd: aspeed: remove redundant dev_err call in aspeed_smc_probe()Wei Yongjun1-6/+2
There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2017-02-10Merge tag 'spi-nor/for-4.11-v2' of git://github.com/spi-nor/linuxBrian Norris9-67/+1913
From Cyrille: """ This pull request contains the following notable changes: - add support to the 4-byte address instruction set. - add support to new memory parts. - add support to S3AN memories. - add support to the Intel SPI controller. - add support to the Aspeed AST2400 and AST2550 controllers. - fix max SPI transfer and message sizes in m25p80_read(). - fix the Candence QSPI driver. - fix the Freescale QSPI driver. """
2017-02-10mtd: spi-nor: cqspi: remove redundant dead code on error return checkColin Ian King1-2/+2
Checking for ret < 0 is redundant because a previous check on ret being non-zero already handles the ret < 0 case. Remove the redundant code. Found by CoverityScan, CID#1398863, CID#1398864 Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Richard Weinberger <richard@nod.at> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-02-10mtd: fsl-quadspi: Rename SEQID_QUAD_READ to SEQID_READYunhui Cui1-4/+4
There are some read modes for flash, such as NORMAL, FAST, QUAD, DDR QUAD. These modes will use the identical lut table base So rename SEQID_QUAD_READ to SEQID_READ. Signed-off-by: Yunhui Cui <B56489@freescale.com> Signed-off-by: Yunhui Cui <yunhui.cui@nxp.com> Acked-by: Han xu <han.xu@nxp.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-02-10mtd:fsl-quadspi:use the property fields of SPI-NORYunhui Cui1-28/+12
We can get the read/write/erase opcode from the spi nor framework directly. This patch uses the information stored in the SPI-NOR to remove the hardcode in the fsl_qspi_init_lut(). Signed-off-by: Yunhui Cui <B56489@freescale.com> Signed-off-by: Yunhui Cui <yunhui.cui@nxp.com> Acked-by: Han xu <han.xu@nxp.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-02-10mtd: spi-nor: Add support for gd25q16Kamal Dasu1-0/+5
Add GigaDevice GD25Q16 (16M-bit) to supported list. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-02-10mtd: spi-nor: Fix S3AN addressing calculationRicardo Ribalda1-3/+6
The page calculation under spi_nor_s3an_addr_convert() was wrong. On Default Address Mode we need to perform a divide by page_size. Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-02-10mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()Cédric Le Goater1-2/+1
The first argument of ioread32_rep() and ioread8_rep is not const. Change aspeed_smc_read_from_ahb() prototype to fix compile warning : drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb': drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] ioread32_rep(src, buf, len >> 2); Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-02-10Merge tag 'ib-mfd-mtd-v4.11' of ↵Cyrille Pitchen5-0/+880
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd From Lee Jones: """ Immutable branch between MFD and MTD due for the v4.11 merge window """
2017-02-10mtd: spi-nor: Add lock/unlock support for f25l32paVictor Shyba1-1/+1
This chip has write protection enabled on power-up, so this flag is necessary to support write operations. Signed-off-by: Victor Shyba <victor1984@riseup.net> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-02-10mtd: spi-nor: add a stateless method to support memory size above 128MibCyrille Pitchen1-21/+80
This patch provides an alternative mean to support memory above 16MiB (128Mib) by replacing 3byte address op codes by their associated 4byte address versions. Using the dedicated 4byte address op codes doesn't change the internal state of the SPI NOR memory as opposed to using other means such as updating a Base Address Register (BAR) and sending command to enter/leave the 4byte mode. Hence when a CPU reset occurs, early bootloaders don't need to be aware of BAR value or 4byte mode being enabled: they can still access the first 16MiB of the SPI NOR memory using the regular 3byte address op codes. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Tested-by: Vignesh R <vigneshr@ti.com> Acked-by: Marek Vasut <marek.vasut@gmail.com>
2017-02-10mtd: spi-nor: rename SPINOR_OP_* macros of the 4-byte address op codesCyrille Pitchen1-4/+4
This patch renames the SPINOR_OP_* macros of the 4-byte address instruction set so the new names all share a common pattern: the 4-byte address name is built from the 3-byte address name appending the "_4B" suffix. The patch also introduces new op codes to support other SPI protocols such as SPI 1-4-4 and SPI 1-2-2. This is a transitional patch and will help a later patch of spi-nor.c to automate the translation from the 3-byte address op codes into their 4-byte address version. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Marek Vasut <marek.vasut@gmail.com>
2017-02-10mtd: aspeed: add memory controllers for the Aspeed AST2400 SoCCédric Le Goater2-1/+34
This driver adds mtd support for the Aspeed AST2400 SoC static memory controllers: * New Static Memory Controller (referred as FMC) . BMC firmware . AST2500 compatible register set . 5 chip select pins (CE0 ∼ CE4) . supports NOR flash, NAND flash and SPI flash memory. * SPI Flash Controller (SPI) . host Firmware . slightly different register set, between AST2500 and the legacy controller . supports SPI flash memory . 1 chip select pin (CE0) The legacy static memory controller (referred as SMC) is not supported, as well as types other than SPI. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-02-10mtd: spi-nor: add memory controllers for the Aspeed AST2500 SoCCédric Le Goater3-0/+737
This driver adds mtd support for the Aspeed AST2500 SoC static memory controllers : * Firmware SPI Memory Controller (FMC) . BMC firmware . 3 chip select pins (CE0 ~ CE2) . supports SPI type flash memory (CE0-CE1) . CE2 can be of NOR type flash but this is not supported by the driver * SPI Flash Controller (SPI1 and SPI2) . host firmware . 2 chip select pins (CE0 ~ CE1) . supports SPI type flash memory Each controller has a memory range on which it maps its flash module slaves. Each slave is assigned a memory window for its mapping that can be changed at bootime with the Segment Address Register. Each SPI flash slave can then be accessed in two modes: Command and User. When in User mode, accesses to the memory segment of the slaves are translated in SPI transfers. When in Command mode, the HW generates the SPI commands automatically and the memory segment is accessed as if doing a MMIO. Currently, only the User mode is supported. Command mode needs a little more work to check that the memory window on the AHB bus fits the module size. Based on previous work from Milton D. Miller II <miltonm@us.ibm.com> Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Joel Stanley <joel@jms.id.au> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-02-10mtd: spi-nor: remove WARN_ONCE() message in spi_nor_write()Cyrille Pitchen1-3/+0
This patch removes the WARN_ONCE() test in spi_nor_write(). This macro triggers the display of a warning message almost every time we use a UBI file-system because a write operation is performed at offset 64, which is in the middle of the SPI NOR memory page. This is a valid operation for ubifs. Hence this warning is pretty annoying and useless so we just remove it. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Suggested-by: Richard Weinberger <richard@nod.at> Suggested-by: Andras Szemzo <szemzo.andras@gmail.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-02-10mtd: spi-nor: improve macronix_quad_enable()Cyrille Pitchen1-0/+3
The patch checks whether the Quad Enable bit is already set in the Status Register. If so, the function exits immediately with a successful return code. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Reviewed-by: Jagan Teki <jagan@openedev.com> Acked-by: Marek Vasut <marek.vasut@gmail.com>
2017-02-10mtd: spi-nor: Add support for S3AN spi-nor devicesRicardo Ribalda1-5/+149
Xilinx Spartan-3AN FPGAs contain an In-System Flash where they keep their configuration data and (optionally) some user data. The protocol of this flash follows most of the spi-nor standard. With the following differences: - Page size might not be a power of two. - The address calculation (default addressing mode). - The spi nor commands used. Protocol is described on Xilinx User Guide UG333 Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Marek Vasut <marek.vasut@gmail.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-02-09mtd: Fix typo: "occured" -> "occurred"Nobuhiro Iwamatsu1-2/+2
Trivial typo fix in comment. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.kw@hitachi.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2017-01-04mtd: spi-nor: cqspi: Fix build on arches missing readsl/writeslMarek Vasut2-3/+5
The x86-64 and some other architectures are missing readsl/writesl functions, so this driver won't build on them. Use a more portable ioread32_rep()/iowrite32_rep() instead. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Alan Tull <atull@opensource.altera.com> Cc: Brian Norris <computersforpeace@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Dinh Nguyen <dinguyen@opensource.altera.com> Cc: Graham Moore <grmoore@opensource.altera.com> Cc: Vignesh R <vigneshr@ti.com> Cc: Yves Vandervennet <yvanderv@opensource.altera.com> Suggested-by: Stefan Roese <sr@denx.de> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
2017-01-03spi-nor: Add support for Intel SPI serial flash controllerMika Westerberg5-0/+880
Add support for the SPI serial flash host controller found on many Intel CPUs including Baytrail and Braswell. The SPI serial flash controller is used to access BIOS and other platform specific information. By default the driver exposes a single read-only MTD device but with a module parameter "writeable=1" the MTD device can be made read-write which makes it possible to upgrade BIOS directly from Linux. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-11-26mtd: spi-nor: constify fsl_qspi_devtype_dataLABBE Corentin1-4/+4
All fsl_qspi_devtype_data structures are never modified. This patch constify them. Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com> Acked-by: Han Xu <han.xu@nxp.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>