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linux/drivers/spi
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Miquel Raynal 8618271887 spi: spi-mem: Limit octal DTR constraints to octal DTR situations 
In this helper, any operation with a single DTR cycle (like 1S-1S-8D) is
considered requiring a duplicated command opcode. This is wrong as this
constraint only applies to octal DTR operations (8D-8D-8D).

Narrow the application of this constraint to the concerned bus
interface.

Note: none of the possible XD-XD-XD pattern, with X being one of {1, 2,
4} would benefit from this check either as there is only in octal DTR
mode that a single clock edge would be enough to transmit the full
opcode.

Make sure the constraint of expecting two bytes for the command is
applied to the relevant bus interface.

Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://patch.msgid.link/20260109-winbond-v6-17-rc1-oddr-v2-3-1fff6a2ddb80@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-01-12 12:40:30 +00:00
..
atmel-quadspi.c
spi: atmel-quadspi: Add support for sama7d65 QSPI
2025-09-18 22:26:42 +01:00
internals.h
spi: Rework per message DMA mapped flag to be per transfer
2024-06-10 12:49:03 +01:00
Kconfig
Merge tag 'spi-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
2025-12-04 11:24:24 -08:00
Makefile
spi: add support for microchip "soft" spi controller
2025-11-14 13:54:43 +00:00
spi-airoha-snfi.c
spi: airoha-snfi: en7523: workaround flash damaging if UART_TXD was short to GND
2025-11-27 11:42:15 +00:00
spi-altera-core.c
spi: add missing MODULE_DESCRIPTION() macros
2024-06-10 12:49:05 +01:00
spi-altera-dfl.c
spi: spi-altera-dfl: switch to use modern name
2022-12-29 13:22:04 +00:00
spi-altera-platform.c
spi: remove unneeded 'fast_io' parameter in regmap_config
2025-08-13 22:31:06 +01:00
spi-amd-pci.c
spi: spi_amd: Remove the use of dev_err_probe()
2025-08-19 13:05:58 +01:00
spi-amd.c
spi: spi_amd: Remove the use of dev_err_probe()
2025-08-19 13:05:58 +01:00
spi-amd.h
spi: spi_amd: Add PCI-based driver for AMD HID2 SPI controller
2025-04-06 23:26:10 +01:00
spi-amlogic-spifc-a1.c
spi: amlogic-spifc-a1: Handle devm_pm_runtime_enable() errors
2025-11-24 11:31:27 +00:00
spi-amlogic-spifc-a4.c
spi: amlogic: fix spifc build error
2025-10-15 14:09:57 +01:00
spi-amlogic-spisg.c
spi: Remove the use of dev_err_probe()
2025-08-19 18:45:38 +01:00
spi-apple.c
spi: apple: Add "apple,t8103-spi" compatible
2025-09-14 21:51:35 +02:00
spi-ar934x.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-armada-3700.c
spi: armada-3700: use 'time_left' variable with wait_for_completion_timeout()
2024-04-30 23:57:26 +09:00
spi-aspeed-smc.c
spi: aspeed: Add support for the AST2700 SPI controller
2025-11-17 00:49:57 +00:00
spi-at91-usart.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-ath79.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-atmel.c
spi: atmel: Add support for handling GCLK as a clock source
2025-08-10 21:11:42 +01:00
spi-au1550.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-axi-spi-engine.c
spi: axi-spi-engine: use adi_axi_pcore_ver_gteq()
2025-09-11 17:52:15 +01:00
spi-bcm63xx-hsspi.c
spi: bcm63xx-hsspi: fix shared reset
2025-05-30 11:42:38 +01:00
spi-bcm63xx.c
Merge tag 'spi-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
2025-12-04 11:24:24 -08:00
spi-bcm2835.c
spi: bcm2835: Remove redundant semicolons
2025-08-12 12:06:11 +01:00
spi-bcm2835aux.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-bcm-qspi.c
spi: bcm-qspi: fix SFDP BFPT read by usig mspi read
2024-01-23 13:28:03 +00:00
spi-bcm-qspi.h
spi: bcm-qspi: Make bcm_qspi_remove() return void
2022-10-18 19:16:53 +01:00
spi-bcmbca-hsspi.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-bitbang-txrx.h
spi: Get rid of old SPI_MASTER_NO_TX & SPI_MASTER_NO_RX
2023-07-11 13:41:20 +01:00
spi-bitbang.c
spi: bitbang: Implement support for MOSI idle state configuration
2024-07-29 01:19:52 +01:00
spi-brcmstb-qspi.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-butterfly.c
parport: Remove parport_driver.devmodel
2024-07-03 16:44:22 +02:00
spi-cadence-quadspi.c
spi: cadence-quadspi: Improve CQSPI_SLOW_SRAM quirk if flash is slow
2025-12-23 10:58:57 +00:00
spi-cadence-xspi.c
spi: cadence: Fix out-of-bounds array access in cdns_mrvl_xspi_setup_clock()
2025-03-31 16:38:32 +01:00
spi-cadence.c
spi: spi-cadence: supports transmission with bits_per_word of 16 and 32
2025-11-13 18:56:49 +00:00
spi-cavium-octeon.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-cavium-thunderx.c
spi: spi-cavium-thunderx: Use non-hybrid PCI devres API
2025-04-17 12:25:42 +01:00
spi-cavium.c
spi: cavium: Follow renaming of SPI "master" to "controller"
2024-02-08 11:54:50 +00:00
spi-cavium.h
spi: cavium: Follow renaming of SPI "master" to "controller"
2024-02-08 11:54:50 +00:00
spi-ch341.c
spi: ch341: fix out-of-bounds memory access in ch341_transfer_one
2025-11-28 11:48:08 +00:00
spi-clps711x.c
spi: clps711x: switch to use modern name
2023-08-07 14:38:28 +01:00
spi-coldfire-qspi.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-cs42l43.c
spi: cs42l43: Use actual ACPI firmware node for chip selects
2025-11-20 16:51:48 +01:00
spi-davinci.c
spi: davinci: remove platform data header
2025-11-17 17:27:38 +00:00
spi-dln2.c
spi: Merge up v6.12
2024-10-07 14:53:15 +01:00
spi-dw-bt1.c
spi: dw: rename the spi controller to ctlr
2025-10-13 11:27:35 +01:00
spi-dw-core.c
spi: dw: add target mode support
2025-10-13 11:27:36 +01:00
spi-dw-dma.c
spi: dw: rename the spi controller to ctlr
2025-10-13 11:27:35 +01:00
spi-dw-mmio.c
spi: dw: add target mode support
2025-10-13 11:27:36 +01:00
spi-dw-pci.c
spi: dw: rename the spi controller to ctlr
2025-10-13 11:27:35 +01:00
spi-dw.h
spi: dw: rename the spi controller to ctlr
2025-10-13 11:27:35 +01:00
spi-ep93xx.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-falcon.c
spi: falcon: mark falcon_sflash_xfer() as static
2025-06-18 17:23:10 +01:00
spi-fsi.c
spi: fsi: Batch TX operations
2025-02-03 19:24:44 +00:00
spi-fsl-cpm.c
spi: add missing MODULE_DESCRIPTION() macros
2024-06-10 12:49:05 +01:00
spi-fsl-cpm.h
spi: fsl: remove is_dma_mapped checks
2024-03-28 21:09:46 +00:00
spi-fsl-dspi.c
spi: spi-fsl-dspi: Report FIFO overflows as errors
2025-09-03 14:30:34 +01:00
spi-fsl-espi.c
spi: Remove redundant pm_runtime_mark_last_busy() calls
2025-07-05 00:50:32 +01:00
spi-fsl-lib.c
spi: add missing MODULE_DESCRIPTION() macros
2024-06-10 12:49:05 +01:00
spi-fsl-lib.h
spi: fsl: Remove unused extern declarations
2023-07-25 17:40:28 +01:00
spi-fsl-lpspi.c
spi: spi-fsl-lpspi: fix watermark truncation caused by type cast
2025-11-21 14:23:45 +00:00
spi-fsl-qspi.c
spi: fsl-qspi: support the SpacemiT K1 SoC
2025-11-06 16:57:36 +00:00
spi-fsl-spi.c
spi: fsl-cpm: Check length parity before switching to 16 bit mode
2025-12-14 19:32:49 +09:00
spi-fsl-spi.h
…
spi-geni-qcom.c
spi: geni-qcom: Load spi qup Firmware from linux side
2025-09-17 13:50:23 -05:00
spi-gpio.c
spi: gpio: Use explicit 'unsigned int' for parameter types
2025-07-16 11:15:31 +01:00
spi-gxp.c
spi: spi-gxp: BUG: Correct spi write return value
2023-09-27 17:06:36 +02:00
spi-hisi-kunpeng.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-hisi-sfc-v3xx.c
spi: fix typo in the comment
2024-09-30 01:12:21 +02:00
spi-img-spfi.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-imx.c
Add RSPI support for RZ/T2H and RZ/N2H
2025-11-24 19:25:58 +00:00
spi-ingenic.c
spi: ingenic: Use new spi_xfer_is_dma_mapped() helper
2024-06-10 12:48:59 +01:00
spi-intel-pci.c
spi: intel: Add support for Oak Stream SPI serial flash
2025-10-29 12:53:45 +00:00
spi-intel-platform.c
spi: intel: Improve resource mapping
2025-04-24 12:56:59 +01:00
spi-intel.c
spi: intel: Add support for 128M component density
2025-10-20 16:15:29 +01:00
spi-intel.h
spi: intel: Improve resource mapping
2025-04-24 12:56:59 +01:00
spi-iproc-qspi.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-jcore.c
spi: jcore: switch to use modern name
2023-08-14 13:11:05 +01:00
spi-kspi2.c
spi: spi-kspi2: Add KEBA SPI controller support
2024-12-04 16:25:22 +00:00
spi-lantiq-ssc.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-ljca.c
spi: ljca: Remove Wentong's e-mail address
2025-09-22 14:23:41 +02:00
spi-lm70llp.c
parport: Remove parport_driver.devmodel
2024-07-03 16:44:22 +02:00
spi-loongson-core.c
spi: loongson: Fix build warnings about export.h
2025-06-08 23:30:04 +01:00
spi-loongson-pci.c
module: Convert symbol namespace to string literal
2024-12-02 11:34:44 -08:00
spi-loongson-plat.c
module: Convert symbol namespace to string literal
2024-12-02 11:34:44 -08:00
spi-loongson.h
spi: loongson: add bus driver for the loongson spi controller
2023-07-31 15:57:09 +01:00
spi-loopback-test.c
spi: loopback-test: Don't use %pK through printk
2025-08-12 12:06:13 +01:00
spi-lp8841-rtc.c
spi: lp-8841: switch to use modern name
2023-09-11 01:31:31 +01:00
spi-mem.c
spi: spi-mem: Limit octal DTR constraints to octal DTR situations
2026-01-12 12:40:30 +00:00
spi-meson-spicc.c
spi: meson-spicc: add DMA support
2025-04-24 19:11:49 +01:00
spi-meson-spifc.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-microchip-core-qspi.c
support for Amlogic SPI Flash Controller IP
2025-09-12 00:54:56 +01:00
spi-microchip-core-spi.c
spi: microchip-core: Fix an error handling path in mchp_corespi_probe()
2025-12-09 10:01:32 +09:00
spi-mpc52xx-psc.c
spi: fix typo in the comment
2024-09-30 01:12:21 +02:00
spi-mpc52xx.c
spi: mpc52xx: Add cancel_work_sync before module remove
2024-12-02 00:29:46 +00:00
spi-mpc512x-psc.c
spi: mpc512x-psc: switch to use modern name
2023-09-11 01:31:35 +01:00
spi-mpfs.c
spi: mpfs: Fix an error handling path in mpfs_spi_probe()
2025-12-14 19:32:48 +09:00
spi-mt65xx.c
spi: mt65xx: Use IRQF_ONESHOT with threaded IRQ
2025-12-17 12:01:17 +00:00
spi-mt7621.c
spi: mt7621: allow GPIO chip select lines
2024-03-25 15:03:02 +00:00
spi-mtk-nor.c
spi: Remove redundant pm_runtime_mark_last_busy() calls
2025-07-05 00:50:32 +01:00
spi-mtk-snfi.c
spi: mtk-snfi: Remove redundant semicolons
2025-08-12 12:06:12 +01:00
spi-mux.c
spi: spi-mux: Fix coverity issue, unchecked return value
2025-03-16 23:34:25 +00:00
spi-mxic.c
spi: mxic: Support per spi-mem operation frequency switches
2025-01-09 20:16:32 +00:00
spi-mxs.c
spi: mxs: fix "transfered"->"transferred"
2025-09-03 13:43:58 +01:00
spi-npcm-fiu.c
spi: npcm-fiu: use min_t() to improve code
2025-08-18 13:14:03 +01:00
spi-npcm-pspi.c
spi: Merge up v6.12
2024-10-07 14:53:15 +01:00
spi-nxp-fspi.c
spi: nxp-fspi: Propagate fwnode in ACPI case as well
2025-11-27 11:41:06 +00:00
spi-oc-tiny.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-offload-trigger-adi-util-sigma-delta.c
spi: offload trigger: adi-util-sigma-delta: clean up imports
2025-08-18 13:13:57 +01:00
spi-offload-trigger-pwm.c
spi: offload: Add offset parameter
2025-10-13 11:27:52 +01:00
spi-offload.c
spi: offload: check offload ops existence before disabling the trigger
2025-06-09 13:31:50 +01:00
spi-omap2-mcspi.c
spi: omap2-mcspi: drive SPI_CLK on transfer_setup()
2025-09-22 09:28:50 +01:00
spi-omap-uwire.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-orion.c
spi: Merge up v6.12
2024-10-07 14:53:15 +01:00
spi-pci1xxxx.c
spi: spi-pci1xxxx: enable concurrent DMA read/write across SPI transfers
2025-06-30 12:15:45 +01:00
spi-pic32-sqi.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-pic32.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-pl022.c
spi: spl022: use min_t() to improve code
2025-08-18 13:14:04 +01:00
spi-ppc4xx.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-pxa2xx-dma.c
spi: pxa2xx: Remove DMA parameters from struct chip_data
2024-05-03 11:11:36 +09:00
spi-pxa2xx-pci.c
module: Convert symbol namespace to string literal
2024-12-02 11:34:44 -08:00
spi-pxa2xx-platform.c
module: Convert symbol namespace to string literal
2024-12-02 11:34:44 -08:00
spi-pxa2xx.c
spi: pxa2xx: Remove the use of dev_err_probe()
2025-08-19 13:06:02 +01:00
spi-pxa2xx.h
spi: pxa2xx: Do not override dev->platform_data on probe
2024-08-22 13:34:05 +01:00
spi-qcom-qspi.c
spi: Use of_property_present() for non-boolean properties
2024-11-04 19:18:19 +00:00
spi-qpic-snand.c
spi: spi-qpic-snand: make qcom_spi_ecc_engine_ops_pipelined const
2025-10-23 14:10:53 +01:00
spi-qup.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-rb4xx.c
spi: rb4xx: use devm for clk_prepare_enable
2025-08-28 11:08:47 +02:00
spi-realtek-rtl-snand.c
spi: realtek-rtl-snand: Drop unneeded assignment for cache_type
2025-02-03 00:41:38 +00:00
spi-realtek-rtl.c
spi: realtek-rtl: switch to use devm_spi_alloc_host()
2023-08-21 14:29:28 +01:00
spi-rockchip-sfc.c
spi: rockchip-sfc: Fix DMA-API usage
2025-10-06 13:37:12 +01:00
spi-rockchip.c
spi-rockchip: Fix register out of bounds access
2025-03-26 13:31:00 +00:00
spi-rpc-if.c
spi: rpc-if: Add resume support for RZ/G3E
2025-09-22 09:21:18 +01:00
spi-rspi.c
spi: rspi: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
2025-07-10 09:16:15 +01:00
spi-rzv2h-rspi.c
spi: rzv2h-rspi: add support for RZ/T2H and RZ/N2H
2025-11-24 14:10:48 +00:00
spi-rzv2m-csi.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-s3c64xx.c
spi: s3c64xx: Drop S3C2443
2025-09-08 16:22:15 +01:00
spi-sc18is602.c
spi: sc18is602: Switch to generic firmware properties and drop of_match_ptr()
2024-12-02 00:32:30 +00:00
spi-sg2044-nor.c
spi: sophgo: Fix incorrect use of bus width value macros
2025-11-18 23:15:11 +00:00
spi-sh-hspi.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-sh-msiof.c
spi: sh-msiof: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
2025-07-10 09:16:14 +01:00
spi-sh-sci.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-sh.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-sifive.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-slave-mt27xx.c
spi: replace and remove
2024-09-30 22:43:40 +01:00
spi-slave-system-control.c
spi: slave-system-control: switch to use spi_target_abort()
2024-09-10 12:41:38 +01:00
spi-slave-time.c
spi: slave-time: switch to use spi_target_abort()
2024-09-10 12:41:37 +01:00
spi-sn-f-ospi.c
spi: sn-f-ospi: Fix division by zero
2025-02-06 11:33:51 +00:00
spi-sprd-adi.c
spi: sprd-adi: switch to use spi_alloc_host()
2023-12-11 12:54:53 +00:00
spi-sprd.c
spi: Remove redundant pm_runtime_mark_last_busy() calls
2025-07-05 00:50:32 +01:00
spi-st-ssc4.c
spi: st: fix PM macros to use CONFIG_PM instead of CONFIG_PM_SLEEP
2025-08-21 13:14:10 +01:00
spi-stm32-ospi.c
spi: stm32-ospi: Fix NULL vs IS_ERR() bug in stm32_ospi_get_resources()
2025-07-16 16:35:18 +01:00
spi-stm32-qspi.c
spi: Remove redundant pm_runtime_mark_last_busy() calls
2025-07-05 00:50:32 +01:00
spi-stm32.c
treewide: Remove redundant
2025-07-07 16:12:21 +01:00
spi-sun4i.c
spi: spi-sun4i: fix early activation
2025-05-14 10:56:43 +02:00
spi-sun6i.c
spi: sun6i: Support A523's SPI controllers
2025-12-22 09:00:50 +00:00
spi-sunplus-sp7021.c
spi: sunplus: sp7021: Clean up coding style
2025-08-10 21:11:39 +01:00
spi-synquacer.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-tegra20-sflash.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-tegra20-slink.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-tegra114.c
spi: tegra114: Use value to check for invalid delays
2025-05-08 10:32:40 +09:00
spi-tegra210-quad.c
spi: tegra210-quad: Check hardware status on timeout
2025-11-04 16:48:55 +00:00
spi-test.h
…
spi-ti-qspi.c
spi: Remove redundant pm_runtime_mark_last_busy() calls
2025-07-05 00:50:32 +01:00
spi-tle62x0.c
spi: tle62x0: Add newline to sysfs attribute output
2025-10-30 13:08:11 +00:00
spi-topcliff-pch.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-uniphier.c
spi: Merge up v6.12
2024-10-07 14:53:15 +01:00
spi-virtio.c
SPI: Add virtio SPI driver
2025-09-22 09:29:30 +01:00
spi-wpcm-fiu.c
spi: wpcm-fiu: Simplify with dev_err_probe()
2024-08-28 22:22:24 +01:00
spi-xcomm.c
treewide: rename GPIO set callbacks back to their original names
2025-08-07 10:07:06 +02:00
spi-xilinx.c
spi: xilinx: increase number of retries before declaring stall
2025-11-07 09:37:46 +00:00
spi-xlp.c
spi: xlp: use 'time_left' variable with wait_for_completion_timeout()
2024-04-30 23:57:32 +09:00
spi-xtensa-xtfpga.c
spi: Switch back to struct platform_driver::remove()
2024-09-30 01:12:23 +02:00
spi-zynq-qspi.c
spi: spi-mem: Introduce a default ->exec_op() debug log
2025-03-20 12:37:11 +00:00
spi-zynqmp-gqspi.c
spi: Remove redundant pm_runtime_mark_last_busy() calls
2025-07-05 00:50:32 +01:00
spi.c
spi: Add TODO comment about ACPI GPIO setup
2025-11-10 14:03:53 +00:00
spidev.c
spi: spidev: add compatible for arduino spi mcu interface
2025-11-20 17:22:39 +00:00