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As noticed in the discussion [1] the Baikal SoC and platforms
are not going to be finalized, hence remove stale code.
Link: https://lore.kernel.org/lkml/22b92ddf-6321-41b5-8073-f9c7064d3432@infradead.org/ [1]
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260127210541.4068379-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The Axiado DB-H SPI controller is only present on Axiado AX3000 SoCs.
Hence add a dependency on ARCH_AXIADO, to prevent asking the user about
this driver when configuring a kernel without Axiado SoC Family support.
Fixes: e75a6b00ad7962a7 ("spi: axiado: Add driver for Axiado SPI DB controller")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/386273d50fb3c51cccdba4b3101a0705208abd4d.1769540444.git.geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from Vladimir Moravcevic <vmoravcevic@axiado.com>:
This series introduces new SPI controller driver for Axiado AX3000 SoC
and its evaluation board.
The SPI controller provides:
- Full-duplex and half-duplex transfer support
- Configurable clock polarity and phase
- Interrupt-driven
Functionality has been verified using the `jedec,spi-nor` interface to
access onboard flash memory. This ensures compatibility with common NOR
flash devices used in boot and storage subsystem.
Further improvements, including performance tuning and extended hardware
feature support, will be submitted in follow-up patches.
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The Axiado SPI controller is present in AX3000 SoC and Evaluation Board.
This controller is operating in Host only mode.
Co-developed-by: Prasad Bolisetty <pbolisetty@axiado.com>
Signed-off-by: Prasad Bolisetty <pbolisetty@axiado.com>
Signed-off-by: Vladimir Moravcevic <vmoravcevic@axiado.com>
Link: https://patch.msgid.link/20260107-axiado-ax3000-soc-spi-db-controller-driver-v3-2-726e70cf19ad@axiado.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from CL Wang <cl634@andestech.com>:
This series adds support for the Andes ATCSPI200 SPI controller.
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Add driver for the Andes ATCSPI200 SPI controller.
Signed-off-by: CL Wang <cl634@andestech.com>
Link: https://patch.msgid.link/20251215132349.513843-3-cl634@andestech.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add driver support for NXP XSPI controller.
XSPI is a flexible SPI host controller which supports up to
2 external devices (2 CS). It support Single/Dual/Quad/Octal
mode data transfer.
The difference between XSPI and Flexspi:
1.the register layout is total different.
2.XSPI support multiple independent execution environments
(EENVs) for HW virtualization with some limitations. Each EENV
has its own interrupt and its own set of programming registers
that exists in a specific offset range in the XSPI memory map.
The main environment (EENV0) address space contains all of the
registers for controlling EENV0 plus all of the general XSPI
control and programming registers. The register mnemonics for
the user environments (EENV1 to EENV4) have "_SUB_n" appended
to the mnemonic for the corresponding main-environment register.
Current driver based on EENV0, which means system already give
EENV0 right to linux.
This driver use SPI memory interface of the SPI framework to
issue flash memory operations. Tested this driver with UBIFS
and mtd_debug on NXP i.MX943 EVK board which has one spi nor
MT35XU512ABA flash. Now this driver has the following key
features:
- Support up to OCT DDR mode
- Support AHB read
- Support IP read and IP write
- Support two CS
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://patch.msgid.link/20251216-xspi-v7-2-282525220979@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"This release is almost entirely new drivers, with a couple of small
changes in generic code.
The biggest individual update is a rename of the existing Microchip
driver and the addition of a new driver for the silicon SPI controller
in their PolarFire SoCs. The overlap between the soft IP supported by
the current driver and this new one is regrettably all in the IP and
not in the register interface offered to software.
- Add a time offset parameter for offloads, allowing them to be
defined in relation to each other. This is useful for IIO type
applcations where you trigger an operation then read the result
after a delay.
- Add a tracepoint for flash exec_ops, bringing the flash support
more in line with the debuggability of vanilla SPI.
- Support for Airoha EN7523, Arduino MCUs, Aspeed AST2700, Microchip
PolarFire SPI controllers, NXP i.MX51 ECSPI target mode, Qualcomm
IPQ5414 and IPQ5332, Renesas RZ/T2H, RZ/V2N and RZ/2NH and SpacemiT
K1 QuadSPI.
There's also a small set of ASoC cleanups that I mistakenly applied to
the SPI tree and then put more stuff on top of before it was brought
to my attention, sorry about that"
* tag 'spi-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (80 commits)
spi: microchip-core: Refactor FIFO read and write handlers
spi: ch341: fix out-of-bounds memory access in ch341_transfer_one
spi: microchip-core: Remove unneeded PM related macro
spi: microchip-core: Use SPI_MODE_X_MASK
spi: microchip-core: Utilise temporary variable for struct device
spi: microchip-core: Replace dead code (-ENOMEM error message)
spi: microchip-core: use min() instead of min_t()
spi: dt-bindings: airoha: add compatible for EN7523
spi: airoha-snfi: en7523: workaround flash damaging if UART_TXD was short to GND
spi: dt-bindings: renesas,rzv2h-rspi: Document RZ/V2N SoC support
spi: dt-bindings: renesas,rzv2h-rspi: Document RZ/V2N SoC support
spi: microchip: Enable compile-testing for FPGA SPI controllers
spi: Fix potential uninitialized variable in probe()
spi: rzv2h-rspi: add support for RZ/T2H and RZ/N2H
spi: dt-bindings: renesas,rzv2h-rspi: document RZ/T2H and RZ/N2H
spi: rzv2h-rspi: add support for loopback mode
spi: rzv2h-rspi: add support for variable transfer clock
spi: rzv2h-rspi: add support for using PCLK for transfer clock
spi: rzv2h-rspi: make transfer clock rate finding chip-specific
spi: rzv2h-rspi: avoid recomputing transfer frequency
...
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This driver runs also on Tegra SoCs without a Tegra20 APB DMA controller
(e.g. Tegra234).
Remove the Kconfig dependency on TEGRA20_APB_DMA; in addition, amend the
help text to reflect the fact that this driver works on SoCs different from
Tegra114.
Fixes: bb9667d8187b ("arm64: tegra: Add SPI device tree nodes for Tegra234")
Signed-off-by: Francesco Lavra <flavra@baylibre.com>
Link: https://patch.msgid.link/20251126095027.4102004-1-flavra@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The Microchip FPGA SPI controller driver builds fine on other platforms.
While at it, drop a superfluous empty line.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/6f96848b026f9a343b80d48179149b30c6b76d1d.1764086805.git.geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from Prajna Rajendra Kumar <prajna.rajendrakumar@microchip.com>:
This patch series adds support for the Microchip FPGA CoreSPI "soft" IP
and documents its device tree bindings.
As preparation, the existing Microchip SPI driver is renamed to clearly
indicate that it supports only the Microchip PolarFire SoC "hard" controller.
Although it was originally named with the expectation that it might also
cover the FPGA CoreSPI "soft" IP, the register layouts differ significantly,
so separate drivers are required.
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Introduce driver support for the Microchip FPGA CoreSPI IP.
This driver supports only Motorola SPI mode and frame size of 8-bits.
TI/NSC modes and wider frame sizes are not currently supported.
Signed-off-by: Prajna Rajendra Kumar <prajna.rajendrakumar@microchip.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20251114104545.284765-4-prajna.rajendrakumar@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The spi-microchip-core.c driver provides support for the Microchip
PolarFire SoC (MPFS) "hard" SPI controller. It was originally named
"core" with the expectation that it might also cover Microchip's
CoreSPI "soft" IP, but that never materialized.
The CoreSPI IP cannot be supported by this driver because its register
layout differs substantially from the MPFS SPI controller. In practice
most of the code would need to be replaced to handle those differences
so keeping the drivers separate is the simpler approach.
The file and internal symbols are renamed to reflect MPFS support and
to free up "spi-microchip-core.c" for CoreSPI driver.
Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers")
Signed-off-by: Prajna Rajendra Kumar <prajna.rajendrakumar@microchip.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20251114104545.284765-2-prajna.rajendrakumar@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Allow the SPI_FSL_QUADSPI Kconfig option to be selected if ARCH_SPACEMIT
enabled.
Add support for the SpacemiT K1 SoC in the Freescale QSPI driver by
defining the device type data for its QSPI implementation.
Signed-off-by: Alex Elder <elder@riscstar.com>
Link: https://patch.msgid.link/20251027133008.360237-8-elder@riscstar.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC driver updates from Arnd Bergmann:
"Lots of platform specific updates for Qualcomm SoCs, including a new
TEE subsystem driver for the Qualcomm QTEE firmware interface.
Added support for the Apple A11 SoC in drivers that are shared with
the M1/M2 series, among more updates for those.
Smaller platform specific driver updates for Renesas, ASpeed,
Broadcom, Nvidia, Mediatek, Amlogic, TI, Allwinner, and Freescale
SoCs.
Driver updates in the cache controller, memory controller and reset
controller subsystems.
SCMI firmware updates to add more features and improve robustness.
This includes support for having multiple SCMI providers in a single
system.
TEE subsystem support for protected DMA-bufs, allowing hardware to
access memory areas that managed by the kernel but remain inaccessible
from the CPU in EL1/EL0"
* tag 'soc-drivers-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (139 commits)
soc/fsl/qbman: Use for_each_online_cpu() instead of for_each_cpu()
soc: fsl: qe: Drop legacy-of-mm-gpiochip.h header from GPIO driver
soc: fsl: qe: Change GPIO driver to a proper platform driver
tee: fix register_shm_helper()
pmdomain: apple: Add "apple,t8103-pmgr-pwrstate"
dt-bindings: spmi: Add Apple A11 and T2 compatible
serial: qcom-geni: Load UART qup Firmware from linux side
spi: geni-qcom: Load spi qup Firmware from linux side
i2c: qcom-geni: Load i2c qup Firmware from linux side
soc: qcom: geni-se: Add support to load QUP SE Firmware via Linux subsystem
soc: qcom: geni-se: Cleanup register defines and update copyright
dt-bindings: qcom: se-common: Add QUP Peripheral-specific properties for I2C, SPI, and SERIAL bus
Documentation: tee: Add Qualcomm TEE driver
tee: qcom: enable TEE_IOC_SHM_ALLOC ioctl
tee: qcom: add primordial object
tee: add Qualcomm TEE driver
tee: increase TEE_MAX_ARG_SIZE to 4096
tee: add TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF
tee: add TEE_IOCTL_PARAM_ATTR_TYPE_UBUF
tee: add close_context to TEE driver operation
...
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This is the virtio SPI Linux kernel driver.
Signed-off-by: Haixu Cui <quic_haixcui@quicinc.com>
Link: https://patch.msgid.link/20250908092348.1283552-4-quic_haixcui@quicinc.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from Xianwei Zhao <xianwei.zhao@amlogic.com>:
This Flash Controller is derived by adding an SPI path to the original
raw NAND controller. This controller supports two modes: raw mode and
SPI mode. The raw mode has already been implemented in the community
(drivers/mtd/nand/raw/meson_nand.c).
This submission supports the SPI mode.
Add the drivers and bindings corresponding to the SPI Flash Controller.
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This driver provides support for the SPI mode of the Amlogic
Flash Controller. It supports both SPI NOR flash and SPI NAND
flash. For SPI NAND, the Host ECC hardware engine can be enabled.
The controller implements the SPI-MEM interface and does not
support generic SPI.
Signed-off-by: Feng Chen <feng.chen@amlogic.com>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20250910-spifc-v6-2-1574aa9baebd@amlogic.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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LAN969x uses the Atmel SPI, so make it selectable for ARCH_MICROCHIP to
avoid needing to update depends in future if other Microchip SoC-s use it
as well.
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Daniel Machon <daniel.machon@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
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Copy macros from ath79 SPI driver to allow compilation on all platforms
and remove ath79 specific header.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Message-ID: <20250826212413.15065-3-rosenp@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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There's no support for non OF platforms. Better to depend on OF
explicitly.
Also fixes a warning/error about the dt table being unused because of
of_match_ptr on non OF platforms.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Message-ID: <20250826212413.15065-2-rosenp@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from Fabrizio Castro <fabrizio.castro.jz@renesas.com>:
This series adds support for the Renesas RZ/V2H RSPI IP.
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Merge series from Xianwei Zhao <xianwei.zhao@amlogic.com>:
Introduced support for the new SPI IP (SPISG). The SPISG is
a communication-oriented SPI controller from Amlogic,supporting
three operation modes: PIO, block DMA, and scatter-gather DMA.
Add the drivers and device tree bindings corresponding to the SPISG.
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The Renesas RZ/V2H(P) RSPI IP supports 4-wire and 3-wire
serial communications in both host role and target role.
It can use a DMA, but the I/O can also be driven by the
processor.
RX-only, TX-only, and RX-TX operations are available in
DMA mode, while in processor I/O mode it only RX-TX
operations are supported.
Add a driver to support 4-wire serial communications as
host role in processor I/O mode.
Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Link: https://patch.msgid.link/20250704162036.468765-3-fabrizio.castro.jz@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Introduced support for the new SPI IP (SPISG) driver. The SPISG is
a communication-oriented SPI controller from Amlogic,supporting
three operation modes: PIO, block DMA, and scatter-gather DMA.
Due to there is no FIFO, PIO mode can only transfer one word at
a time, which is extremely slow. Therefore, this mode was not
implemented.
Signed-off-by: Sunny Luo <sunny.luo@amlogic.com>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20250718-spisg-v5-2-b8f0f1eb93a2@amlogic.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from David Lechner <dlechner@baylibre.com>:
Also there is a new dt-binding and driver for a special SPI offload
trigger FPGA IP core that is used in this particular setup.
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Add a new driver for the ADI Util Sigma-Delta SPI FPGA IP core.
This is used to trigger a SPI offload based on a RDY signal from an ADC
while masking out other signals on the same line.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250627-iio-adc-ad7173-add-spi-offload-support-v2-9-f49c55599113@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Commit 9a30e332c36c ("spi: spi-fsl-dspi: Enable support for S32G
platforms") reworks the dependencies of config SPI_FSL_DSPI, but introduces
a typo changing the dependency to M5441x to a dependency on a non-existing
config M54541x.
Revert the unintended change to depend on the config M5441x.
Fixes: 9a30e332c36c ("spi: spi-fsl-dspi: Enable support for S32G platforms")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Link: https://patch.msgid.link/20250616091955.20547-1-lukas.bulwahn@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add compatible for S32G platforms, allowing DSPI to be used.
Add a depends for ARCH_NXP which can replace LAYERSCAPE and also
includes the new ARCH_S32 for S32G. Similarly, ARCH_MXC can replace
SOC_VF610 || SOC_LS1021A which should avoid updating this for every new
sub-platform in the future.
Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@nxp.com>
Signed-off-by: Stoica Cosmin-Stefan <cosmin.stoica@nxp.com>
Signed-off-by: Dan Nica <dan.nica@nxp.com>
Signed-off-by: Larisa Grigore <Larisa.Grigore@nxp.com>
Signed-off-by: Stefan-Gabriel Mirea <stefan-gabriel.mirea@nxp.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Link: https://patch.msgid.link/20250522-james-nxp-spi-v2-13-bea884630cfb@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add X86 and SPI_MEM as dependencies for the spi_amd driver to ensure it is
built only on relevant platforms and with the required SPI memory
framework.
Co-developed-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Link: https://patch.msgid.link/20250516100658.585654-4-Raju.Rangoju@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Without CONFIG_PCI, the module_pci_driver() macro is not defined:
drivers/spi/spi-amd-pci.c:67:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
67 | module_pci_driver(amd_spi_pci_driver);
Fixes: b644c2776652 ("spi: spi_amd: Add PCI-based driver for AMD HID2 SPI controller")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20250410140809.812863-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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SPI_QPIC_SNAND is the only driver that selects MTD instead of depending
on it, which could lead to circular dependencies. Moreover, as
SPI_QPIC_SNAND is bool, this forces MTD (and various related symbols) to
be built-in, as can be seen in an allmodconfig kernel.
Except for a missing semicolon, there is no reason why SPI_QPIC_SNAND
cannot be tristate; all MODULE_*() boilerplate is already present.
Hence make SPI_QPIC_SNAND tristate, let it depend on MTD, and add the
missing semicolon.
Fixes: 7304d1909080ef0c ("spi: spi-qpic: add driver for QCOM SPI NAND flash Interface")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/b63db431cbf35223a4400e44c296293d32c4543c.1742998909.git.geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add support for SG2044 SPI NOR controller in Sophgo SoC.
Signed-off-by: Longbin Li <looong.bin@gmail.com>
Link: https://patch.msgid.link/20250304083548.10101-3-looong.bin@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from patrice.chotard@foss.st.com:
This series adds SPI NOR support for STM32MP25 SoCs from STMicroelectronics.
On STM32MP25 SoCs family, an Octo Memory Manager block manages the muxing,
the memory area split, the chip select override and the time constraint
between its 2 Octo SPI children.
Due to these depedencies, this series adds support for:
- Octo Memory Manager driver (not applied for SPI).
- Octo SPI driver.
- yaml schema for Octo Memory Manager and Octo SPI drivers.
The device tree files adds Octo Memory Manager and its 2 associated Octo
SPI chidren in stm32mp251.dtsi and adds SPI NOR support in stm32mp257f-ev1
board.
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This driver implements support for the SPI-NAND mode of QCOM NAND Flash
Interface as a SPI-MEM controller with pipelined ECC capability.
Co-developed-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
Co-developed-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
Link: https://patch.msgid.link/20250224111414.2809669-3-quic_mdalam@quicinc.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add STM32 OSPI driver, it supports :
- support sNOR / sNAND devices.
- Three functional modes: indirect, automatic-status polling,
memory-mapped.
- Single-, dual-, quad-, and octal-SPI communication.
- Dual-quad communication.
- Single data rate (SDR).
- DMA channel for indirect mode.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://patch.msgid.link/20250219080059.367045-3-patrice.chotard@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Implement SPI offload support for the AXI SPI Engine. Currently, the
hardware only supports triggering offload transfers with a hardware
trigger so attempting to use an offload message in the regular SPI
message queue will fail. Also, only allows streaming rx data to an
external sink, so attempts to use a rx_buf in the offload message will
fail.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250207-dlech-mainline-spi-engine-offload-2-v8-7-e48a489be48c@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add a new driver for a generic PWM trigger for SPI offloads.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250207-dlech-mainline-spi-engine-offload-2-v8-4-e48a489be48c@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add the basic infrastructure to support SPI offload providers and
consumers.
SPI offloading is a feature that allows the SPI controller to perform
transfers without any CPU intervention. This is useful, e.g. for
high-speed data acquisition.
SPI controllers with offload support need to implement the get_offload
and put_offload callbacks and can use the devm_spi_offload_alloc() to
allocate offload instances.
SPI peripheral drivers will call devm_spi_offload_get() to get a
reference to the matching offload instance. This offload instance can
then be attached to a SPI message to request offloading that message.
It is expected that SPI controllers with offload support will check for
the offload instance in the SPI message in the ctlr->optimize_message()
callback and handle it accordingly.
CONFIG_SPI_OFFLOAD is intended to be a select-only option. Both
consumer and provider drivers should `select SPI_OFFLOAD` in their
Kconfig to ensure that the SPI core is built with offload support.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250207-dlech-mainline-spi-engine-offload-2-v8-1-e48a489be48c@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The KEBA SPI controller is found in the system FPGA of KEBA PLC devices.
It is used to connect the SPI flash chip of the FPGA and some SPI
devices.
It is a simple SPI controller with configurable speed. The hardware
supports only single byte transfers. There are no FIFOs or interrupts.
Signed-off-by: Gerhard Engleder <eg@keba.com>
Link: https://patch.msgid.link/20241202194003.57679-1-gerhard@engleder-embedded.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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This SPI controller is present in Apple SoCs such as the M1 (t8103) and
M1 Pro/Max (t600x). It is a relatively straightforward design with two
16-entry FIFOs, arbitrary transfer sizes (up to 2**32 - 1) and fully
configurable word size up to 32 bits. It supports one hardware CS line
which can also be driven via the pinctrl/GPIO driver instead, if
desired. TX and RX can be independently enabled.
There are a surprising number of knobs for tweaking details of the
transfer, most of which we do not use right now. Hardware CS control
is available, but we haven't found a way to make it stay low across
multiple logical transfers, so we just use software CS control for now.
There is also a shared DMA offload coprocessor that can be used to handle
larger transfers without requiring an IRQ every 8-16 words, but that
feature depends on a bunch of scaffolding that isn't ready to be
upstreamed yet, so leave it for later.
The hardware shares some register bit definitions with spi-s3c24xx which
suggests it has a shared legacy with Samsung SoCs, but it is too
different to warrant sharing a driver.
Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Janne Grunau <j@jannau.net>
Link: https://patch.msgid.link/20241106-asahi-spi-v5-2-e81a4f3a8e19@jannau.net
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add a driver for the SPI-NAND controller on the RTL9300 family of
devices.
The controller supports
* Serial/Dual/Quad data with
* PIO and DMA data read/write operation
* Configurable flash access timing
There is a separate ECC controller on the RTL9300 which isn't currently
supported (instead we rely on the on-die ECC supported by most SPI-NAND
chips).
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://patch.msgid.link/20241015225434.3970360-4-chris.packham@alliedtelesis.co.nz
Signed-off-by: Mark Brown <broonie@kernel.org>
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xSPI block requires 64 bit operation for proper Marvell SDMA handling.
Disallow bulding on targets without 64 bit support.
Signed-off-by: Witold Sadowski <wsadowski@marvell.com>
Link: https://patch.msgid.link/20240730131627.1874257-1-wsadowski@marvell.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add a driver for the QiHeng Electronics ch341a USB-to-SPI adapter.
This driver is loosely based on the ch341a module from the flashrom project.
Signed-off-by: Johannes Thumshirn <jth@kernel.org>
Link: https://patch.msgid.link/20240708-spi-ch341a-v3-1-cf7f9b2c1e31@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from Andy Shevchenko <andriy.shevchenko@linux.intel.com>:
As Arnd suggested we may drop linux/spi/pxa2xx_spi.h as most of
its content is being used solely internally to SPI subsystem
(PXA2xx drivers). Hence this refactoring series with the additional
win of getting rid of legacy documentation.
Note, that we have the only user of a single plain integer field
in the entire kernel for that. Switching to software nodes does not
diminish any of type checking as we only pass an integer.
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The documentation is referring to the legacy enumeration of the SPI
host controllers and target devices. It has nothing to do with the
modern way, which is the only supported in kernel right now. Hence,
remove outdated documentation file.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240417110334.2671228-5-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The modpost script is not happy
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/spi/spi-bitbang.o
because there is a missing module description.
Add it to the module.
While at it, update the terminology in Kconfig section to be in align
with added description along with the code comments.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240502171518.2792895-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Introduce support for SPI-NAND driver of the Airoha NAND Flash Interface
found on Airoha ARM SoCs.
Tested-by: Rajeev Kumar <Rajeev.Kumar@airoha.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/6c9db20505b01a66807995374f2af475a23ce5b2.1714377864.git.lorenzo@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:
In some cs42l43 systems a couple of cs35l56 amplifiers are attached
to the cs42l43's SPI and I2S. On Windows the cs42l43 is controlled
by a SDCA class driver and these two amplifiers are controlled by
firmware running on the cs42l43. However, under Linux the decision
was made to interact with the cs42l43 directly, affording the user
greater control over the audio system. However, this has resulted
in an issue where these two bridged cs35l56 amplifiers are not
populated in ACPI and must be added manually. There is at least an
SDCA extension unit DT entry we can key off.
The process of adding this is handled using a software node, firstly the
ability to add native chip selects to software nodes must be added.
Secondly, an additional flag for naming the SPI devices is added this
allows the machine driver to key to the correct amplifier. Then finally,
the cs42l43 SPI driver adds the two amplifiers directly onto its SPI
bus.
An additional series will follow soon to add the audio machine driver
parts (in the sof-sdw driver), however that is fairly orthogonal to
this part of the process, getting the actual amplifiers registered.
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On some cs42l43 systems a couple of cs35l56 amplifiers are attached
to the cs42l43's SPI and I2S. On Windows the cs42l43 is controlled
by a SDCA class driver and these two amplifiers are controlled by
firmware running on the cs42l43. However, under Linux the decision
was made to interact with the cs42l43 directly, affording the user
greater control over the audio system. However, this has resulted
in an issue where these two bridged cs35l56 amplifiers are not
populated in ACPI and must be added manually.
Check for the presence of the "01fa-cirrus-sidecar-instances" property
in the SDCA extension unit's ACPI properties to confirm the presence
of these two amplifiers and if they exist add them manually onto the
SPI bus.
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20240416100904.3738093-5-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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