- added MIPS support for brcmstb PCIe controller
- added Loongson 2K1000 reset driver
- removed board support for rbtx4938/rbtx4939
- removed support for TX4939 SoCs
- fixes and cleanups
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Merge tag 'mips_5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Thomas Bogendoerfer:
- add support for more BCM47XX based devices
- add MIPS support for brcmstb PCIe controller
- add Loongson 2K1000 reset driver
- remove board support for rbtx4938/rbtx4939
- remove support for TX4939 SoCs
- fixes and cleanups
* tag 'mips_5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (59 commits)
MIPS: ath79: drop _machine_restart again
PCI: brcmstb: Augment driver for MIPs SOCs
MIPS: bmips: Remove obsolete DMA mapping support
MIPS: bmips: Add support PCIe controller device nodes
dt-bindings: PCI: Add compatible string for Brcmstb 74[23]5 MIPs SOCs
MIPS: compressed: Fix build with ZSTD compression
MIPS: BCM47XX: Add support for Netgear WN2500RP v1 & v2
MIPS: BCM47XX: Add support for Netgear R6300 v1
MIPS: BCM47XX: Add LEDs and buttons for Asus RTN-10U
MIPS: BCM47XX: Add board entry for Linksys WRT320N v1
MIPS: BCM47XX: Define Linksys WRT310N V2 buttons
MIPS: Remove duplicated include in local.h
MIPS: retire "asm/llsc.h"
MIPS: rework local_t operation on MIPS64
MIPS: fix local_{add,sub}_return on MIPS64
mips/pci: remove redundant ret variable
MIPS: Loongson64: Add missing of_node_put() in ls2k_reset_init()
MIPS: new Kconfig option ZBOOT_LOAD_ADDRESS
MIPS: enable both vmlinux.gz.itb and vmlinuz for generic
MIPS: signal: Return immediately if call fails
...
It's a relatively calm development cycle, but still lots of updates in
the driver side like Intel SOF. Below are some highlights:
* ALSA / ASoC core:
- A new kselftest for ALSA control API
- PCM NO_REWINDS support
- Potential race fixes around control removals
- Unify x86 SG-buffer memory allocation code
- Cleanups and race fixes for ASoC DPCM locking
* ASoC:
- Refinements and cleanups around the delay() APIs
- Wider use of dev_err_probe().
- Continuing cleanups and improvements to the SOF code
- Support for pin switches in simple-card derived cards
- Support for AMD Renoir ACP, Asahi Kasei Microdevices AKM4375, Intel
systems using NAU8825 and MAX98390, Mediatek MT8915, nVidia Tegra20
S/PDIF, Qualcomm systems using ALC5682I-VS and Texas Instruments
TLV320ADC3xxx
* HD-audio / USB-audio:
- Fix deadlock at HD-audio codec unbinding
- Fixes for Tegra194 HD-audio, new HDA support for CS35L41 codec
- Quirks for Lenovo and HP machines, Gigabyte mobo, Bose device
* Misc:
- Fix virmidi drain behavior
Note that the merge of CS35L41 codec support is still half-baked, and
at least one ACPI change is missing. Although this won't hinder the
kernel build itself, we're going to catch up before RC1.
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Merge tag 'sound-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"It's a relatively calm development cycle, but still lots of updates in
the driver side like Intel SOF. Below are some highlights:
ALSA / ASoC core:
- A new kselftest for ALSA control API
- PCM NO_REWINDS support
- Potential race fixes around control removals
- Unify x86 SG-buffer memory allocation code
- Cleanups and race fixes for ASoC DPCM locking
ASoC:
- Refinements and cleanups around the delay() APIs
- Wider use of dev_err_probe().
- Continuing cleanups and improvements to the SOF code
- Support for pin switches in simple-card derived cards
- Support for AMD Renoir ACP, Asahi Kasei Microdevices AKM4375, Intel
systems using NAU8825 and MAX98390, Mediatek MT8915, nVidia Tegra20
S/PDIF, Qualcomm systems using ALC5682I-VS and Texas Instruments
TLV320ADC3xxx
HD-audio / USB-audio:
- Fix deadlock at HD-audio codec unbinding
- Fixes for Tegra194 HD-audio, new HDA support for CS35L41 codec
- Quirks for Lenovo and HP machines, Gigabyte mobo, Bose device
Misc:
- Fix virmidi drain behavior
Note that the merge of CS35L41 codec support is still half-baked, and
at least one ACPI change is missing. Although this won't hinder the
kernel build itself, we're going to catch up before RC1"
* tag 'sound-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (415 commits)
ALSA: hda: intel-dsp-config: reorder the config table
ALSA: hda: intel-dsp-config: add JasperLake support
ALSA: hda: cs35l41: fix double free on error in probe()
ALSA: hda: Fix dependencies of CS35L41 on SPI/I2C buses
ALSA: hda: Fix dependency on ASoC cs35l41 codec
ASoC: cs35l41: Add support for hibernate memory retention mode
ASoC: cs35l41: Update handling of test key registers
ALSA: intel_hdmi: Check for error num after setting mask
ASoC: wcd9335: Keep a RX port value for each SLIM RX mux
ASoC: amd: acp: acp-mach: Change default RT1019 amp dev id
ALSA: virmidi: Remove duplicated code
ALSA: seq: virmidi: Add a drain operation
ASoC: topology: Fix typo
ASoC: fsl_asrc: refine the check of available clock divider
ASoC: Intel: bytcr_rt5640: Add support for external GPIO jack-detect
ASoC: Intel: bytcr_rt5640: Support retrieving the codec IRQ from the AMCR0F28 ACPI dev
ASoC: rt5640: Add support for boards with an external jack-detect GPIO
ASoC: rt5640: Allow snd_soc_component_set_jack() to override the codec IRQ
ASoC: rt5640: Change jack_work to a delayed_work
ASoC: rt5640: Fix possible NULL pointer deref on resume
...
* mtdchar: Prevent unbounded allocation in MEMWRITE ioctl
* gen_probe: Use bitmap_zalloc() when applicable
* Introduce an expert mode for forensics and debugging purposes
* Clear out unregistered devices a bit more
* Provide unique name for nvmem device
* Remove unused header file <linux/mtd/latch-addr-flash.h>
* Fixed breaking list in __mtd_del_partition.
MTD device changes:
* sst25l, mchp48l640, mchp23k256, dataflash:
- Warn about failure to unregister mtd device
Raw NAND core changes:
* Export nand_read_page_hwecc_oob_first()
GPMC memory controller for OMAP2 NAND controller changes:
* GPMC:
- Add support for AM64 SoC and allow build on K3 platforms
- Use a compatible match table when checking for NAND controller
- Use platform_get_irq() to get the interrupt
Raw NAND controller changes:
* OMAP2 NAND controller:
- Document the missing 'rb-gpios' DT property
- Drop unused variable
- Fix force_8bit flag behaviour for DMA mode
- Move to exec_op interface
- Use platform_get_irq() to get the interrupt
* Renesas:
- Add new NAND controller driver with its bindings and MAINTAINERS entry
* Onenand:
- Remove redundant variable ooblen
* MPC5121:
- Remove unused variable in ads5121_select_chip()
* GPMI:
- Add ERR007117 protection for nfc_apply_timings
- Remove explicit default gpmi clock setting for i.MX6
- Use platform_get_irq_byname() to get the interrupt
- Remove unneeded variable
* Ingenic:
- JZ4740 needs 'oob_first' read page function
* Davinci:
- Rewrite function description
- Avoid duplicated page read
- Don't calculate ECC when reading page
SPI NOR core changes:
* Add Pratyush as SPI NOR co-maintainer.
* Flash parameters initialization was done in a spaghetti way. Clean
flash parameters initialization.
* Rework the flash_info flags and clarify where one should be used.
* Initialize all flash parameters based on JESD216 SFDP where possible.
Flash parameters and settings that are SFDP discoverable should not be
duplicated via flash_info flags at flash declaration.
* Remove debugfs entries that duplicate sysfs entries.
SPI NOR manufacturer driver changes:
* Use late_init() hook in various drivers to make it clear that those
flash parameters are either not declared in the JESD216 SFDP standard,
or the SFDP tables which define those flash parameters are not defined
by the flash.
* Fix mtd size for s3an flashes.
* Write 2 bytes when disabling Octal DTR mode: 1 byte long transactions are
not allowed in 8D-8D-8D mode.
Hyperbus changes:
* Couple of fixes in Renesas hyperbus rpc-if driver to avoid crash on
module remove and for missing check for error value in probe.
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Merge tag 'mtd/for-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD updates from Miquel Raynal:
"MTD core changes:
- mtdchar: Prevent unbounded allocation in MEMWRITE ioctl
- gen_probe: Use bitmap_zalloc() when applicable
- Introduce an expert mode for forensics and debugging purposes
- Clear out unregistered devices a bit more
- Provide unique name for nvmem device
- Remove unused header file <linux/mtd/latch-addr-flash.h>
- Fixed breaking list in __mtd_del_partition.
MTD device changes:
- Warn about failure to unregister mtd device in sst25l, mchp48l640,
mchp23k256, and dataflash drivers.
Raw NAND core changes:
- Export nand_read_page_hwecc_oob_first()
GPMC memory controller for OMAP2 NAND controller changes:
- Add support for AM64 SoC and allow build on K3 platforms
- Use a compatible match table when checking for NAND controller
- Use platform_get_irq() to get the interrupt
Raw NAND controller changes:
- OMAP2 NAND controller:
- Document the missing 'rb-gpios' DT property
- Drop unused variable
- Fix force_8bit flag behaviour for DMA mode
- Move to exec_op interface
- Use platform_get_irq() to get the interrupt
- Renesas:
- Add new NAND controller driver with its bindings and MAINTAINERS entry
- Onenand:
- Remove redundant variable ooblen
- MPC5121:
- Remove unused variable in ads5121_select_chip()
- GPMI:
- Add ERR007117 protection for nfc_apply_timings
- Remove explicit default gpmi clock setting for i.MX6
- Use platform_get_irq_byname() to get the interrupt
- Remove unneeded variable
- Ingenic:
- JZ4740 needs 'oob_first' read page function
- Davinci:
- Rewrite function description
- Avoid duplicated page read
- Don't calculate ECC when reading page
SPI NOR core changes:
- Add Pratyush as SPI NOR co-maintainer.
- Flash parameters initialization was done in a spaghetti way. Clean
flash parameters initialization.
- Rework the flash_info flags and clarify where one should be used.
- Initialize all flash parameters based on JESD216 SFDP where
possible. Flash parameters and settings that are SFDP discoverable
should not be duplicated via flash_info flags at flash declaration.
- Remove debugfs entries that duplicate sysfs entries.
SPI NOR manufacturer driver changes:
- Use late_init() hook in various drivers to make it clear that those
flash parameters are either not declared in the JESD216 SFDP
standard, or the SFDP tables which define those flash parameters
are not defined by the flash.
- Fix mtd size for s3an flashes.
- Write 2 bytes when disabling Octal DTR mode: 1 byte long
transactions are not allowed in 8D-8D-8D mode.
Hyperbus changes:
- Couple of fixes in Renesas hyperbus rpc-if driver to avoid crash on
module remove and for missing check for error value in probe"
* tag 'mtd/for-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (71 commits)
mtd: spi-nor: Remove debugfs entries that duplicate sysfs entries
mtd: spi-nor: micron-st: write 2 bytes when disabling Octal DTR mode
mtd: spi-nor: spansion: write 2 bytes when disabling Octal DTR mode
mtd: spi-nor: core: use 2 data bytes for template ops
mtd: spi-nor: Constify part specific fixup hooks
mtd: spi-nor: core: Remove reference to spi-nor.c
mtd: rawnand: gpmi: Use platform_get_irq_byname() to get the interrupt
mtd: rawnand: omap_elm: Use platform_get_irq() to get the interrupt
mtd: rawnand: omap2: Select GPMC device driver for ARCH_K3
memory: omap-gpmc: Use a compatible match table when checking for NAND controller
memory: omap-gpmc: Add support for GPMC on AM64 SoC
dt-bindings: memory-controllers: ti,gpmc: Add compatible for AM64
memory: omap-gpmc: Use platform_get_irq() to get the interrupt
MAINTAINERS: Add an entry for Renesas NAND controller
mtd: rawnand: renesas: Add new NAND controller driver
dt-bindings: mtd: renesas: Describe Renesas R-Car Gen3 & RZ/N1 NAND controller
mtd: rawnand: gpmi: remove unneeded variable
mtd: rawnand: omap2: drop unused variable
mtd: rawnand: omap2: fix force_8bit flag behaviour for DMA mode
mtd: rawnand: omap2: Add compatible for AM64 SoC
...
There are cleanups and minor bugfixes across several SoC specific
drivers, for Qualcomm, Samsung, NXP i.MX, AT91, Tegra, Keystone,
Renesas, ZynqMP
Noteworthy new features are:
- The op-tee firmware driver gains support for asynchronous
notifications from secure-world firmware.
- Qualcomm platforms gain support for new SoC types in various
drivers: power domain, cache controller, RPM sleep, soc-info
- Samsung SoC drivers gain support for new SoCs in ChipID and PMU,
as well as a new USIv2 driver that handles various types of
serial communiction (uart, i2c, spi)
- Renesas adds support for R-Car S4-8 (R8A779F0) in multiple
drivers, as well as memory controller support for RZ/G2L
(R9A07G044).
- Apple M1 gains support for the PMGR power management driver
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Merge tag 'drivers-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC driver updates from Arnd Bergmann:
"There are cleanups and minor bugfixes across several SoC specific
drivers, for Qualcomm, Samsung, NXP i.MX, AT91, Tegra, Keystone,
Renesas, ZynqMP
Noteworthy new features are:
- The op-tee firmware driver gains support for asynchronous
notifications from secure-world firmware.
- Qualcomm platforms gain support for new SoC types in various
drivers: power domain, cache controller, RPM sleep, soc-info
- Samsung SoC drivers gain support for new SoCs in ChipID and PMU, as
well as a new USIv2 driver that handles various types of serial
communiction (uart, i2c, spi)
- Renesas adds support for R-Car S4-8 (R8A779F0) in multiple drivers,
as well as memory controller support for RZ/G2L (R9A07G044).
- Apple M1 gains support for the PMGR power management driver"
* tag 'drivers-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (94 commits)
soc: qcom: rpmh-rsc: Fix typo in a comment
soc: qcom: socinfo: Add SM6350 and SM7225
dt-bindings: arm: msm: Don't mark LLCC interrupt as required
dt-bindings: firmware: scm: Add SM6350 compatible
dt-bindings: arm: msm: Add LLCC for SM6350
soc: qcom: rpmhpd: Sort power-domain definitions and lists
soc: qcom: rpmhpd: Remove mx/cx relationship on sc7280
soc: qcom: rpmhpd: Rename rpmhpd struct names
soc: qcom: rpmhpd: sm8450: Add the missing .peer for sm8450_cx_ao
soc: qcom: socinfo: add SM8450 ID
soc: qcom: rpmhpd: Add SM8450 power domains
dt-bindings: power: rpmpd: Add SM8450 to rpmpd binding
soc: qcom: smem: Update max processor count
dt-bindings: arm: qcom: Document SM8450 SoC and boards
dt-bindings: firmware: scm: Add SM8450 compatible
dt-bindings: arm: cpus: Add kryo780 compatible
soc: qcom: rpmpd: Add support for sm6125
dt-bindings: qcom-rpmpd: Add sm6125 power domains
soc: qcom: aoss: constify static struct thermal_cooling_device_ops
PM: AVS: qcom-cpr: Use div64_ul instead of do_div
...
After removal of RBTX4939 board support remove code for the TX4939 SoC.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
* Export nand_read_page_hwecc_oob_first()
GPMC memory controller for OMAP2 NAND controller:
* GPMC:
- Add support for AM64 SoC and allow build on K3 platforms
- Use a compatible match table when checking for NAND controller
- Use platform_get_irq() to get the interrupt
Raw NAND controller drivers:
* OMAP2 NAND controller:
- Document the missing 'rb-gpios' DT property
- Drop unused variable
- Fix force_8bit flag behaviour for DMA mode
- Move to exec_op interface
- Use platform_get_irq() to get the interrupt
* Renesas:
- Add new NAND controller driver with its bindings and MAINTAINERS entry
* Onenand:
- Remove redundant variable ooblen
* MPC5121:
- Remove unused variable in ads5121_select_chip()
* GPMI:
- Add ERR007117 protection for nfc_apply_timings
- Remove explicit default gpmi clock setting for i.MX6
- Use platform_get_irq_byname() to get the interrupt
- Remove unneeded variable
* Ingenic:
- JZ4740 needs 'oob_first' read page function
* Davinci:
- Rewrite function description
- Avoid duplicated page read
- Don't calculate ECC when reading page
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Merge tag 'nand/for-5.17' into mtd/next
Raw NAND core:
* Export nand_read_page_hwecc_oob_first()
GPMC memory controller for OMAP2 NAND controller:
* GPMC:
- Add support for AM64 SoC and allow build on K3 platforms
- Use a compatible match table when checking for NAND controller
- Use platform_get_irq() to get the interrupt
Raw NAND controller drivers:
* OMAP2 NAND controller:
- Document the missing 'rb-gpios' DT property
- Drop unused variable
- Fix force_8bit flag behaviour for DMA mode
- Move to exec_op interface
- Use platform_get_irq() to get the interrupt
* Renesas:
- Add new NAND controller driver with its bindings and MAINTAINERS entry
* Onenand:
- Remove redundant variable ooblen
* MPC5121:
- Remove unused variable in ads5121_select_chip()
* GPMI:
- Add ERR007117 protection for nfc_apply_timings
- Remove explicit default gpmi clock setting for i.MX6
- Use platform_get_irq_byname() to get the interrupt
- Remove unneeded variable
* Ingenic:
- JZ4740 needs 'oob_first' read page function
* Davinci:
- Rewrite function description
- Avoid duplicated page read
- Don't calculate ECC when reading page
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
1. Add support for AM64 SoC.
2. Minor improvement: use platform_get_irq().
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Merge tag 'memory-controller-drv-omap-5.17' into nand/next
Memory controller drivers for v5.17 - OMAP GPMC
1. Add support for AM64 SoC.
2. Minor improvement: use platform_get_irq().
[miquel.raynal@bootlin.com: A first commit introduced a new omap
compatible and another moved the IDs to a header which created a
conflict: moving the new ID as well in the header fixed it.]
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
platform_get_resource_byname(pdev, IORESOURCE_IRQ, ..) relies on static
allocation of IRQ resources in DT core code, this causes an issue
when using hierarchical interrupt domains using "interrupts" property
in the node as this bypasses the hierarchical setup and messes up the
irq chaining.
In preparation for removal of static setup of IRQ resource from DT core
code use platform_get_irq_byname().
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211221212609.31290-3-prabhakar.mahadev-lad.rj@bp.renesas.com
platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static
allocation of IRQ resources in DT core code, this causes an issue
when using hierarchical interrupt domains using "interrupts" property
in the node as this bypasses the hierarchical setup and messes up the
irq chaining.
In preparation for removal of static setup of IRQ resource from DT core
code use platform_get_irq().
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211221212609.31290-2-prabhakar.mahadev-lad.rj@bp.renesas.com
The GPMC device driver is required for NAND controller
to work on K3 Architecture. Select it if required.
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20211221131757.2030-5-rogerq@kernel.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
As more compatibles can be added to the GPMC NAND controller driver
use a compatible match table.
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20211221131757.2030-4-rogerq@kernel.org
[krzysztof: remove "is_nand" variable]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Introduce Renesas NAND controller driver which currently supports the
following features on R-Car Gen3 and RZ/N1 SoCs:
- All ONFI timing modes
- Different configurations of its internal ECC controller
- On-die (not tested) and software ECC support
- Several chips (not tested)
- Subpage accesses
- DMA and PIO
This controller was originally provided by Evatronix before being bought
by Cadence.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Ralph Siemsen <ralph.siemsen@linaro.org>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/linux-mtd/20211217142033.353599-3-miquel.raynal@bootlin.com
In DMA mode we were not considering the force_8bit flag.
Fix it by using regular non-DMA 8-bit I/O if force_8bit flag is set.
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211209090458.24830-6-rogerq@kernel.org
The slave_id was previously used to pick one DMA slave instead of another,
but this is now done through the DMA descriptors in device tree.
For the qcom_adm driver, the configuration is documented in the DT
binding to contain a tuple of device identifier and a "crci" field,
but the implementation ends up using only a single cell for identifying
the slave, with the crci getting passed in nonstandard properties of
the device, and passed through the dma driver using the old slave_id
field. Part of the problem apparently is that the nand driver ends up
using only a single DMA request ID, but requires distinct values for
"crci" depending on the type of transfer.
Change both the dmaengine driver and the two slave drivers to allow
the documented binding to work in addition to the ad-hoc passing
of crci values. In order to no longer abuse the slave_id field, pass
the data using the "peripheral_config" mechanism instead.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20211122222203.4103644-9-arnd@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The NAND on Tegra belongs to the core power domain and we're going to
enable GENPD support for the core domain. Now NAND must be resumed using
runtime PM API in order to initialize the NAND power state. Add runtime PM
and OPP support to the NAND driver.
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
When developping NAND controller drivers or when debugging filesystem
corruptions, it is quite common to need hacking locally into the
MTD/NAND core in order to get access to the content of the bad
blocks. Instead of having multiple implementations out there let's
provide a simple yet effective specific MTD-wide debugfs entry to fully
disable these checks on purpose.
A warning is added to inform the user when this mode gets enabled.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211118114659.1282855-1-miquel.raynal@bootlin.com
Under certain circumstances, the timing settings calculated by
the FSMC NAND controller driver were inaccurate.
These settings led to incorrect data reads or fallback to
timing mode 0 depending on the NAND chip used.
The timing computation did not take into account the following
constraint given in SPEAr3xx reference manual:
twait >= tCEA - (tset * TCLK) + TOUTDEL + TINDEL
Enhance the timings calculation by taking into account this
additional constraint.
This change has no impact on slow timing modes such as mode 0.
Indeed, on mode 0, computed values are the same with and
without the patch.
NANDs which previously stayed in mode 0 because of fallback to
mode 0 can now work at higher speeds and NANDs which were not
working at all because of the corrupted data work at high
speeds without troubles.
Overall improvement on a Micron/MT29F1G08 (flash_speed tool):
mode0 mode3
eraseblock write speed 3220 KiB/s 4511 KiB/s
eraseblock read speed 4491 KiB/s 7529 KiB/s
Fixes: d9fb079571 ("mtd: nand: fsmc: add support for SDR timings")
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211119150316.43080-5-herve.codina@bootlin.com
The FSMC NAND controller should apply a delay after the
instruction has been issued on the bus.
The FSMC NAND controller driver did not handle this delay.
Add this waiting delay in the FSMC NAND controller driver.
Fixes: 4da712e702 ("mtd: nand: fsmc: use ->exec_op()")
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211119150316.43080-4-herve.codina@bootlin.com
When the NV-DDR interface is not supported by the NAND chip,
the value of onfi->nvddr_timing_modes is 0. In this case,
the best_mode variable value in nand_choose_best_nvddr_timings()
is -1. The last for-loop is skipped and the function returns an
uninitialized value.
If this returned value is 0, the nand_choose_best_sdr_timings()
is not executed and no 'best timing' are set. This leads the host
controller and the NAND chip working at default mode 0 timing
even if a better timing can be used.
Fix this uninitialized returned value.
nand_choose_best_sdr_timings() is pretty similar to
nand_choose_best_nvddr_timings(). Even if onfi->sdr_timing_modes
should never be seen as 0, nand_choose_best_sdr_timings() returned
value is fixed.
Fixes: a9ecc8c814 ("mtd: rawnand: Choose the best timings, NV-DDR included")
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211119150316.43080-3-herve.codina@bootlin.com
NAND_OP_CMD() expects a delay parameter in nanoseconds.
The delay value is wrongly given in milliseconds.
Fix the conversion macro used in order to set this
delay in nanoseconds.
Fixes: d7a773e881 ("mtd: rawnand: Access SDR and NV-DDR timings through a common macro")
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211119150316.43080-2-herve.codina@bootlin.com
The helper function devm_platform_ioremap_resource_xxx()
needs HAS_IOMEM enabled, so add the dependency on HAS_IOMEM.
Fixes: 5f14a8ca1b ("mtd: rawnand: denali: Make use of the helper function devm_platform_ioremap_resource_byname()")
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211109134758.417-1-caihuoqing@baidu.com
gpmi_io clock needs to be gated off when changing the parent/dividers of
enfc_clk_root (i.MX6Q/i.MX6UL) respectively qspi2_clk_root (i.MX6SX).
Otherwise this rate change can lead to an unresponsive GPMI core which
results in DMA timeouts and failed driver probe:
[ 4.072318] gpmi-nand 112000.gpmi-nand: DMA timeout, last DMA
...
[ 4.370355] gpmi-nand 112000.gpmi-nand: Chip: 0, Error -110
...
[ 4.375988] gpmi-nand 112000.gpmi-nand: Chip: 0, Error -22
[ 4.381524] gpmi-nand 112000.gpmi-nand: Error in ECC-based read: -22
[ 4.387988] gpmi-nand 112000.gpmi-nand: Chip: 0, Error -22
[ 4.393535] gpmi-nand 112000.gpmi-nand: Chip: 0, Error -22
...
Other than stated in i.MX 6 erratum ERR007117, it should be sufficient
to gate only gpmi_io because all other bch/nand clocks are derived from
different clock roots.
The i.MX6 reference manuals state that changing clock muxers can cause
glitches but are silent about changing dividers. But tests showed that
these glitches can definitely happen on i.MX6ULL. For i.MX7D/8MM in turn,
the manual guarantees that no glitches can happen when changing
dividers.
Co-developed-by: Stefan Riedmueller <s.riedmueller@phytec.de>
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
Signed-off-by: Christian Eggers <ceggers@arri.de>
Cc: stable@vger.kernel.org
Acked-by: Han Xu <han.xu@nxp.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211102202022.15551-2-ceggers@arri.de
There is no need to explicitly set the default gpmi clock rate during
boot for the i.MX 6 since this is done during nand_detect anyway.
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
Cc: stable@vger.kernel.org
Acked-by: Han Xu <han.xu@nxp.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211102202022.15551-1-ceggers@arri.de
The ECC engine on the JZ4740 SoC requires the ECC data to be read before
the page; using the default page reading function does not work. Indeed,
the old JZ4740 NAND driver (removed in 5.4) did use the 'OOB first' flag
that existed back then.
Use the newly created nand_read_page_hwecc_oob_first() to address this
issue.
This issue was not found when the new ingenic-nand driver was developed,
most likely because the Device Tree used had the nand-ecc-mode set to
"hw_oob_first", which seems to not be supported anymore.
Cc: <stable@vger.kernel.org> # v5.2
Fixes: a0ac778eb8 ("mtd: rawnand: ingenic: Add support for the JZ4740")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211016132228.40254-5-paul@crapouillou.net
Move the function nand_read_page_hwecc_oob_first() (previously
nand_davinci_read_page_hwecc_oob_first()) to nand_base.c, and export it
as a GPL symbol, so that it can be used by more modules.
Cc: <stable@vger.kernel.org> # v5.2
Fixes: a0ac778eb8 ("mtd: rawnand: ingenic: Add support for the JZ4740")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211016132228.40254-4-paul@crapouillou.net
The original comment that describes the function
nand_davinci_read_page_hwecc_oob_first() is very obscure and it is hard
to understand what it is for.
Cc: <stable@vger.kernel.org> # v5.2
Fixes: a0ac778eb8 ("mtd: rawnand: ingenic: Add support for the JZ4740")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211016132228.40254-3-paul@crapouillou.net
The function nand_davinci_read_page_hwecc_oob_first() first reads the
OOB data, extracts the ECC information, programs the ECC hardware before
reading the actual data in a loop.
Right after the OOB data was read, it called nand_read_page_op() to
reset the read cursor to the beginning of the page. This caused the
first page to be read twice: in that call, and later in the loop.
Address that issue by changing the call to nand_read_page_op() to
nand_change_read_column_op(), which will only reset the read cursor.
Cc: <stable@vger.kernel.org> # v5.2
Fixes: a0ac778eb8 ("mtd: rawnand: ingenic: Add support for the JZ4740")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211016132228.40254-2-paul@crapouillou.net
The function nand_davinci_read_page_hwecc_oob_first() does read the ECC
data from the OOB area. Therefore it does not need to calculate the ECC
as it is already available.
Cc: <stable@vger.kernel.org> # v5.2
Fixes: a0ac778eb8 ("mtd: rawnand: ingenic: Add support for the JZ4740")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211016132228.40254-1-paul@crapouillou.net
* Remove obsolete macros only used by the old nand_ecclayout struct
* Don't remove debugfs directory if device is in use
* MAINTAINERS:
- Add entry for Qualcomm NAND controller driver
- Update the devicetree documentation path of hyperbus
MTD devices:
* block2mtd:
- Add support for an optional custom MTD label
- Minor refactor to avoid hard coded constant
* mtdswap: Remove redundant assignment of pointer eb
CFI:
* Fixup CFI on ixp4xx
Raw NAND controller drivers:
* Arasan:
- Prevent an unsupported configuration
* Xway, Socrates: plat_nand, Pasemi, Orion, mpc5121, GPIO, Au1550nd, AMS-Delta:
- Keep the driver compatible with on-die ECC engines
* cs553x, lpc32xx_slc, ndfc, sharpsl, tmio, txx9ndfmc:
- Revert the commits: "Fix external use of SW Hamming ECC helper"
- And let callers use the bare Hamming helpers
* Fsmc: Fix use of SM ORDER
* Intel:
- Fix potential buffer overflow in probe
* xway, vf610, txx9ndfm, tegra, stm32, plat_nand, oxnas, omap, mtk, hisi504,
gpmi, gpio, denali, bcm6368, atmel:
- Make use of the helper function devm_platform_ioremap_resource{,byname}()
Onenand drivers:
* Samsung: Drop Exynos4 and describe driver in KConfig
Raw NAND chip drivers:
* Hynix: Add support for H27UCG8T2ETR-BC MLC NAND
SPI NOR core:
* Add spi-nor device tree binding under SPI NOR maintainers
SPI NOR manufacturer drivers:
* Enable locking for n25q128a13
SPI NOR controller drivers:
* Use devm_platform_ioremap_resource_byname()
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Merge tag 'mtd/for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull mtd updates from Miquel Raynal:
"Core:
- Remove obsolete macros only used by the old nand_ecclayout struct
- Don't remove debugfs directory if device is in use
- MAINTAINERS:
- Add entry for Qualcomm NAND controller driver
- Update the devicetree documentation path of hyperbus
MTD devices:
- block2mtd:
- Add support for an optional custom MTD label
- Minor refactor to avoid hard coded constant
- mtdswap: Remove redundant assignment of pointer eb
CFI:
- Fixup CFI on ixp4xx
Raw NAND controller drivers:
- Arasan:
- Prevent an unsupported configuration
- Xway, Socrates: plat_nand, Pasemi, Orion, mpc5121, GPIO, Au1550nd,
AMS-Delta:
- Keep the driver compatible with on-die ECC engines
- cs553x, lpc32xx_slc, ndfc, sharpsl, tmio, txx9ndfmc:
- Revert the commits: "Fix external use of SW Hamming ECC helper"
- And let callers use the bare Hamming helpers
- Fsmc: Fix use of SM ORDER
- Intel:
- Fix potential buffer overflow in probe
- xway, vf610, txx9ndfm, tegra, stm32, plat_nand, oxnas, omap, mtk,
hisi504, gpmi, gpio, denali, bcm6368, atmel:
- Make use of the helper function devm_platform_ioremap_resource{,byname}()
Onenand drivers:
- Samsung: Drop Exynos4 and describe driver in KConfig
Raw NAND chip drivers:
- Hynix: Add support for H27UCG8T2ETR-BC MLC NAND
SPI NOR core:
- Add spi-nor device tree binding under SPI NOR maintainers
SPI NOR manufacturer drivers:
- Enable locking for n25q128a13
SPI NOR controller drivers:
- Use devm_platform_ioremap_resource_byname()"
* tag 'mtd/for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (50 commits)
mtd: core: don't remove debugfs directory if device is in use
MAINTAINERS: Update the devicetree documentation path of hyperbus
mtd: block2mtd: add support for an optional custom MTD label
mtd: block2mtd: minor refactor to avoid hard coded constant
mtd: fixup CFI on ixp4xx
mtd: rawnand: arasan: Prevent an unsupported configuration
MAINTAINERS: Add entry for Qualcomm NAND controller driver
mtd: rawnand: hynix: Add support for H27UCG8T2ETR-BC MLC NAND
mtd: rawnand: xway: Keep the driver compatible with on-die ECC engines
mtd: rawnand: socrates: Keep the driver compatible with on-die ECC engines
mtd: rawnand: plat_nand: Keep the driver compatible with on-die ECC engines
mtd: rawnand: pasemi: Keep the driver compatible with on-die ECC engines
mtd: rawnand: orion: Keep the driver compatible with on-die ECC engines
mtd: rawnand: mpc5121: Keep the driver compatible with on-die ECC engines
mtd: rawnand: gpio: Keep the driver compatible with on-die ECC engines
mtd: rawnand: au1550nd: Keep the driver compatible with on-die ECC engines
mtd: rawnand: ams-delta: Keep the driver compatible with on-die ECC engines
Revert "mtd: rawnand: cs553x: Fix external use of SW Hamming ECC helper"
Revert "mtd: rawnand: lpc32xx_slc: Fix external use of SW Hamming ECC helper"
Revert "mtd: rawnand: ndfc: Fix external use of SW Hamming ECC helper"
...
Under the following conditions:
* after rounding up by 4 the number of bytes to transfer (this is
related to the controller's internal constraints),
* if this (rounded) amount of data is situated beyond the end of the
device,
* and only in NV-DDR mode,
the Arasan NAND controller timeouts.
This currently can happen in a particular helper used when picking
software ECC algorithms. Let's prevent this situation by refusing to use
the NV-DDR interface with software engines.
Fixes: 4edde60314 ("mtd: rawnand: arasan: Support NV-DDR interface")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211008163640.1753821-1-miquel.raynal@bootlin.com
Add support for the H27UCG8T2ETR-BC MLC NAND. The NAND is used widely
in the NTC CHIP, is an MLC type NAND, and is 8GB in size. Neither
JEDEC nor ONFI detection identifies it correctly, so the ID is added
to the nand_ids.c file. Additionally, per the datasheet this NAND
appears to use the same paired pages scheme as the Toshiba
TC58TEG5DCLTA00 (dist3), so add support for that to enable use in
SLC emulation mode.
Tested on a NTC CHIP the device is able to write to a ubifs formatted
partition, and then have U-Boot (with proposed patches) boot from a
kernel located on that ubifs formatted partition.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210930162402.344-1-macroalpha82@gmail.com
Following the introduction of the generic ECC engine infrastructure, it
was necessary to reorganize the code and move the ECC configuration in
the ->attach_chip() hook. Failing to do that properly lead to a first
series of fixes supposed to stabilize the situation. Unfortunately, this
only fixed the use of software ECC engines, preventing any other kind of
engine to be used, including on-die ones.
It is now time to (finally) fix the situation by ensuring that we still
provide a default (eg. software ECC) but will still support different
ECC engines such as on-die ECC engines if properly described in the
device tree.
There are no changes needed on the core side in order to do this, but we
just need to leverage the logic there which allows:
1- a subsystem default (set to Host engines in the raw NAND world)
2- a driver specific default (here set to software ECC engines)
3- any type of engine requested by the user (ie. described in the DT)
As the raw NAND subsystem has not yet been fully converted to the ECC
engine infrastructure, in order to provide a default ECC engine for this
driver we need to set chip->ecc.engine_type *before* calling
nand_scan(). During the initialization step, the core will consider this
entry as the default engine for this driver. This value may of course
be overloaded by the user if the usual DT properties are provided.
Fixes: d525914b5b ("mtd: rawnand: xway: Move the ECC initialization to ->attach_chip()")
Cc: stable@vger.kernel.org
Cc: Jan Hoffmann <jan@3e8.eu>
Cc: Kestrel seventyfour <kestrelseventyfour@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Jan Hoffmann <jan@3e8.eu>
Link: https://lore.kernel.org/linux-mtd/20210928222258.199726-10-miquel.raynal@bootlin.com
Following the introduction of the generic ECC engine infrastructure, it
was necessary to reorganize the code and move the ECC configuration in
the ->attach_chip() hook. Failing to do that properly lead to a first
series of fixes supposed to stabilize the situation. Unfortunately, this
only fixed the use of software ECC engines, preventing any other kind of
engine to be used, including on-die ones.
It is now time to (finally) fix the situation by ensuring that we still
provide a default (eg. software ECC) but will still support different
ECC engines such as on-die ECC engines if properly described in the
device tree.
There are no changes needed on the core side in order to do this, but we
just need to leverage the logic there which allows:
1- a subsystem default (set to Host engines in the raw NAND world)
2- a driver specific default (here set to software ECC engines)
3- any type of engine requested by the user (ie. described in the DT)
As the raw NAND subsystem has not yet been fully converted to the ECC
engine infrastructure, in order to provide a default ECC engine for this
driver we need to set chip->ecc.engine_type *before* calling
nand_scan(). During the initialization step, the core will consider this
entry as the default engine for this driver. This value may of course
be overloaded by the user if the usual DT properties are provided.
Fixes: b36bf0a0fe ("mtd: rawnand: socrates: Move the ECC initialization to ->attach_chip()")
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928222258.199726-9-miquel.raynal@bootlin.com
Following the introduction of the generic ECC engine infrastructure, it
was necessary to reorganize the code and move the ECC configuration in
the ->attach_chip() hook. Failing to do that properly lead to a first
series of fixes supposed to stabilize the situation. Unfortunately, this
only fixed the use of software ECC engines, preventing any other kind of
engine to be used, including on-die ones.
It is now time to (finally) fix the situation by ensuring that we still
provide a default (eg. software ECC) but will still support different
ECC engines such as on-die ECC engines if properly described in the
device tree.
There are no changes needed on the core side in order to do this, but we
just need to leverage the logic there which allows:
1- a subsystem default (set to Host engines in the raw NAND world)
2- a driver specific default (here set to software ECC engines)
3- any type of engine requested by the user (ie. described in the DT)
As the raw NAND subsystem has not yet been fully converted to the ECC
engine infrastructure, in order to provide a default ECC engine for this
driver we need to set chip->ecc.engine_type *before* calling
nand_scan(). During the initialization step, the core will consider this
entry as the default engine for this driver. This value may of course
be overloaded by the user if the usual DT properties are provided.
Fixes: 612e048e6a ("mtd: rawnand: plat_nand: Move the ECC initialization to ->attach_chip()")
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928222258.199726-8-miquel.raynal@bootlin.com
Following the introduction of the generic ECC engine infrastructure, it
was necessary to reorganize the code and move the ECC configuration in
the ->attach_chip() hook. Failing to do that properly lead to a first
series of fixes supposed to stabilize the situation. Unfortunately, this
only fixed the use of software ECC engines, preventing any other kind of
engine to be used, including on-die ones.
It is now time to (finally) fix the situation by ensuring that we still
provide a default (eg. software ECC) but will still support different
ECC engines such as on-die ECC engines if properly described in the
device tree.
There are no changes needed on the core side in order to do this, but we
just need to leverage the logic there which allows:
1- a subsystem default (set to Host engines in the raw NAND world)
2- a driver specific default (here set to software ECC engines)
3- any type of engine requested by the user (ie. described in the DT)
As the raw NAND subsystem has not yet been fully converted to the ECC
engine infrastructure, in order to provide a default ECC engine for this
driver we need to set chip->ecc.engine_type *before* calling
nand_scan(). During the initialization step, the core will consider this
entry as the default engine for this driver. This value may of course
be overloaded by the user if the usual DT properties are provided.
Fixes: 8fc6f1f042 ("mtd: rawnand: pasemi: Move the ECC initialization to ->attach_chip()")
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928222258.199726-7-miquel.raynal@bootlin.com
Following the introduction of the generic ECC engine infrastructure, it
was necessary to reorganize the code and move the ECC configuration in
the ->attach_chip() hook. Failing to do that properly lead to a first
series of fixes supposed to stabilize the situation. Unfortunately, this
only fixed the use of software ECC engines, preventing any other kind of
engine to be used, including on-die ones.
It is now time to (finally) fix the situation by ensuring that we still
provide a default (eg. software ECC) but will still support different
ECC engines such as on-die ECC engines if properly described in the
device tree.
There are no changes needed on the core side in order to do this, but we
just need to leverage the logic there which allows:
1- a subsystem default (set to Host engines in the raw NAND world)
2- a driver specific default (here set to software ECC engines)
3- any type of engine requested by the user (ie. described in the DT)
As the raw NAND subsystem has not yet been fully converted to the ECC
engine infrastructure, in order to provide a default ECC engine for this
driver we need to set chip->ecc.engine_type *before* calling
nand_scan(). During the initialization step, the core will consider this
entry as the default engine for this driver. This value may of course
be overloaded by the user if the usual DT properties are provided.
Fixes: 553508cec2 ("mtd: rawnand: orion: Move the ECC initialization to ->attach_chip()")
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928222258.199726-6-miquel.raynal@bootlin.com
Following the introduction of the generic ECC engine infrastructure, it
was necessary to reorganize the code and move the ECC configuration in
the ->attach_chip() hook. Failing to do that properly lead to a first
series of fixes supposed to stabilize the situation. Unfortunately, this
only fixed the use of software ECC engines, preventing any other kind of
engine to be used, including on-die ones.
It is now time to (finally) fix the situation by ensuring that we still
provide a default (eg. software ECC) but will still support different
ECC engines such as on-die ECC engines if properly described in the
device tree.
There are no changes needed on the core side in order to do this, but we
just need to leverage the logic there which allows:
1- a subsystem default (set to Host engines in the raw NAND world)
2- a driver specific default (here set to software ECC engines)
3- any type of engine requested by the user (ie. described in the DT)
As the raw NAND subsystem has not yet been fully converted to the ECC
engine infrastructure, in order to provide a default ECC engine for this
driver we need to set chip->ecc.engine_type *before* calling
nand_scan(). During the initialization step, the core will consider this
entry as the default engine for this driver. This value may of course
be overloaded by the user if the usual DT properties are provided.
Fixes: 6dd09f775b ("mtd: rawnand: mpc5121: Move the ECC initialization to ->attach_chip()")
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928222258.199726-5-miquel.raynal@bootlin.com
Following the introduction of the generic ECC engine infrastructure, it
was necessary to reorganize the code and move the ECC configuration in
the ->attach_chip() hook. Failing to do that properly lead to a first
series of fixes supposed to stabilize the situation. Unfortunately, this
only fixed the use of software ECC engines, preventing any other kind of
engine to be used, including on-die ones.
It is now time to (finally) fix the situation by ensuring that we still
provide a default (eg. software ECC) but will still support different
ECC engines such as on-die ECC engines if properly described in the
device tree.
There are no changes needed on the core side in order to do this, but we
just need to leverage the logic there which allows:
1- a subsystem default (set to Host engines in the raw NAND world)
2- a driver specific default (here set to software ECC engines)
3- any type of engine requested by the user (ie. described in the DT)
As the raw NAND subsystem has not yet been fully converted to the ECC
engine infrastructure, in order to provide a default ECC engine for this
driver we need to set chip->ecc.engine_type *before* calling
nand_scan(). During the initialization step, the core will consider this
entry as the default engine for this driver. This value may of course
be overloaded by the user if the usual DT properties are provided.
Fixes: f6341f6448 ("mtd: rawnand: gpio: Move the ECC initialization to ->attach_chip()")
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928222258.199726-4-miquel.raynal@bootlin.com
Following the introduction of the generic ECC engine infrastructure, it
was necessary to reorganize the code and move the ECC configuration in
the ->attach_chip() hook. Failing to do that properly lead to a first
series of fixes supposed to stabilize the situation. Unfortunately, this
only fixed the use of software ECC engines, preventing any other kind of
engine to be used, including on-die ones.
It is now time to (finally) fix the situation by ensuring that we still
provide a default (eg. software ECC) but will still support different
ECC engines such as on-die ECC engines if properly described in the
device tree.
There are no changes needed on the core side in order to do this, but we
just need to leverage the logic there which allows:
1- a subsystem default (set to Host engines in the raw NAND world)
2- a driver specific default (here set to software ECC engines)
3- any type of engine requested by the user (ie. described in the DT)
As the raw NAND subsystem has not yet been fully converted to the ECC
engine infrastructure, in order to provide a default ECC engine for this
driver we need to set chip->ecc.engine_type *before* calling
nand_scan(). During the initialization step, the core will consider this
entry as the default engine for this driver. This value may of course
be overloaded by the user if the usual DT properties are provided.
Fixes: dbffc8ccdf ("mtd: rawnand: au1550: Move the ECC initialization to ->attach_chip()")
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928222258.199726-3-miquel.raynal@bootlin.com
Following the introduction of the generic ECC engine infrastructure, it
was necessary to reorganize the code and move the ECC configuration in
the ->attach_chip() hook. Failing to do that properly lead to a first
series of fixes supposed to stabilize the situation. Unfortunately, this
only fixed the use of software ECC engines, preventing any other kind of
engine to be used, including on-die ones.
It is now time to (finally) fix the situation by ensuring that we still
provide a default (eg. software ECC) but will still support different
ECC engines such as on-die ECC engines if properly described in the
device tree.
There are no changes needed on the core side in order to do this, but we
just need to leverage the logic there which allows:
1- a subsystem default (set to Host engines in the raw NAND world)
2- a driver specific default (here set to software ECC engines)
3- any type of engine requested by the user (ie. described in the DT)
As the raw NAND subsystem has not yet been fully converted to the ECC
engine infrastructure, in order to provide a default ECC engine for this
driver we need to set chip->ecc.engine_type *before* calling
nand_scan(). During the initialization step, the core will consider this
entry as the default engine for this driver. This value may of course
be overloaded by the user if the usual DT properties are provided.
Fixes: 59d9347332 ("mtd: rawnand: ams-delta: Move the ECC initialization to ->attach_chip()")
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928222258.199726-2-miquel.raynal@bootlin.com
This reverts commit 56a8d3fd1f.
Before the introduction of the ECC framework infrastructure, many
drivers used the ->calculate/correct() Hamming helpers directly. The
point of this framework was to avoid this kind of hackish calls and use a
proper and generic API but it is true that in certain cases, drivers
still need to use these helpers in order to do ECC computations on
behalf of their limited hardware.
Right after the introduction of the ECC engine core introduction, it was
spotted that it was not possible to use the shiny rawnand software ECC
helpers so easily because an ECC engine object should have been
allocated and initialized first. While this works well in most cases,
for these drivers just leveraging the power of a single helper in
conjunction with some pretty old and limited hardware, it did not fit.
The idea back then was to declare intermediate helpers which would make
use of the exported software ECC engine bare functions while keeping the
rawnand layer compatibility. As there was already functions with the
rawnand_sw_hamming_ prefix it was decided to declare new local helpers
for this purpose in each driver needing one.
Besides being far from optimal, this design choice was blamed by Linus
when he pulled the "fixes" pull request [1] so that is why now it is
time to clean this mess up.
The implementation of the rawnand_ecc_sw_* helpers has now been enhanced
to support both cases, when the ECC object is instantiated and when it is
not. This way, we can still use the existing and exported rawnand
helpers while avoiding the need for each driver to declare its own
helper, thus this fix from [2] can now be safely reverted.
[1] https://lore.kernel.org/lkml/CAHk-=wh_ZHF685Fni8V9is17mj=pFisUaZ_0=gq6nbK+ZcyQmg@mail.gmail.com/
[2] https://lore.kernel.org/linux-mtd/20210413161840.345208-1-miquel.raynal@bootlin.com
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928221507.199198-9-miquel.raynal@bootlin.com
This reverts commit c4b7d7c480.
Before the introduction of the ECC framework infrastructure, many
drivers used the ->calculate/correct() Hamming helpers directly. The
point of this framework was to avoid this kind of hackish calls and use a
proper and generic API but it is true that in certain cases, drivers
still need to use these helpers in order to do ECC computations on
behalf of their limited hardware.
Right after the introduction of the ECC engine core introduction, it was
spotted that it was not possible to use the shiny rawnand software ECC
helpers so easily because an ECC engine object should have been
allocated and initialized first. While this works well in most cases,
for these drivers just leveraging the power of a single helper in
conjunction with some pretty old and limited hardware, it did not fit.
The idea back then was to declare intermediate helpers which would make
use of the exported software ECC engine bare functions while keeping the
rawnand layer compatibility. As there was already functions with the
rawnand_sw_hamming_ prefix it was decided to declare new local helpers
for this purpose in each driver needing one.
Besides being far from optimal, this design choice was blamed by Linus
when he pulled the "fixes" pull request [1] so that is why now it is
time to clean this mess up.
The implementation of the rawnand_ecc_sw_* helpers has now been enhanced
to support both cases, when the ECC object is instantiated and when it is
not. This way, we can still use the existing and exported rawnand
helpers while avoiding the need for each driver to declare its own
helper, thus this fix from [2] can now be safely reverted.
[1] https://lore.kernel.org/lkml/CAHk-=wh_ZHF685Fni8V9is17mj=pFisUaZ_0=gq6nbK+ZcyQmg@mail.gmail.com/
[2] https://lore.kernel.org/linux-mtd/20210413161840.345208-1-miquel.raynal@bootlin.com
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928221507.199198-8-miquel.raynal@bootlin.com
This reverts commit 3e09c02525.
Before the introduction of the ECC framework infrastructure, many
drivers used the ->calculate/correct() Hamming helpers directly. The
point of this framework was to avoid this kind of hackish calls and use a
proper and generic API but it is true that in certain cases, drivers
still need to use these helpers in order to do ECC computations on
behalf of their limited hardware.
Right after the introduction of the ECC engine core introduction, it was
spotted that it was not possible to use the shiny rawnand software ECC
helpers so easily because an ECC engine object should have been
allocated and initialized first. While this works well in most cases,
for these drivers just leveraging the power of a single helper in
conjunction with some pretty old and limited hardware, it did not fit.
The idea back then was to declare intermediate helpers which would make
use of the exported software ECC engine bare functions while keeping the
rawnand layer compatibility. As there was already functions with the
rawnand_sw_hamming_ prefix it was decided to declare new local helpers
for this purpose in each driver needing one.
Besides being far from optimal, this design choice was blamed by Linus
when he pulled the "fixes" pull request [1] so that is why now it is
time to clean this mess up.
The implementation of the rawnand_ecc_sw_* helpers has now been enhanced
to support both cases, when the ECC object is instantiated and when it is
not. This way, we can still use the existing and exported rawnand
helpers while avoiding the need for each driver to declare its own
helper, thus this fix from [2] can now be safely reverted.
[1] https://lore.kernel.org/lkml/CAHk-=wh_ZHF685Fni8V9is17mj=pFisUaZ_0=gq6nbK+ZcyQmg@mail.gmail.com/
[2] https://lore.kernel.org/linux-mtd/20210413161840.345208-1-miquel.raynal@bootlin.com
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928221507.199198-7-miquel.raynal@bootlin.com
This reverts commit 46fcb57e6b.
Before the introduction of the ECC framework infrastructure, many
drivers used the ->calculate/correct() Hamming helpers directly. The
point of this framework was to avoid this kind of hackish calls and use a
proper and generic API but it is true that in certain cases, drivers
still need to use these helpers in order to do ECC computations on
behalf of their limited hardware.
Right after the introduction of the ECC engine core introduction, it was
spotted that it was not possible to use the shiny rawnand software ECC
helpers so easily because an ECC engine object should have been
allocated and initialized first. While this works well in most cases,
for these drivers just leveraging the power of a single helper in
conjunction with some pretty old and limited hardware, it did not fit.
The idea back then was to declare intermediate helpers which would make
use of the exported software ECC engine bare functions while keeping the
rawnand layer compatibility. As there was already functions with the
rawnand_sw_hamming_ prefix it was decided to declare new local helpers
for this purpose in each driver needing one.
Besides being far from optimal, this design choice was blamed by Linus
when he pulled the "fixes" pull request [1] so that is why now it is
time to clean this mess up.
The implementation of the rawnand_ecc_sw_* helpers has now been enhanced
to support both cases, when the ECC object is instantiated and when it is
not. This way, we can still use the existing and exported rawnand
helpers while avoiding the need for each driver to declare its own
helper, thus this fix from [2] can now be safely reverted.
[1] https://lore.kernel.org/lkml/CAHk-=wh_ZHF685Fni8V9is17mj=pFisUaZ_0=gq6nbK+ZcyQmg@mail.gmail.com/
[2] https://lore.kernel.org/linux-mtd/20210413161840.345208-1-miquel.raynal@bootlin.com
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210928221507.199198-6-miquel.raynal@bootlin.com
Linus Torvalds