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Witold Sadowski 2fed4a94bc spi: cadence: Ensure data lines set to low during dummy-cycle period 
[ Upstream commit 4a69c1264ff41bc5bf7c03101ada0454fbf08868 ]

During dummy-cycles xSPI will switch GPIO into Hi-Z mode. In that dummy
period voltage on data lines will slowly drop, what can cause
unintentional modebyte transmission. Value send to SPI memory chip will
depend on last address, and clock frequency.
To prevent unforeseen consequences of that behaviour, force send
single modebyte(0x00).
Modebyte will be send only if number of dummy-cycles is not equal
to 0. Code must also reduce dummycycle byte count by one - as one byte
is send as modebyte.

Signed-off-by: Witold Sadowski <wsadowski@marvell.com>
Link: https://msgid.link/r/20240529074037.1345882-2-wsadowski@marvell.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-07-11 12:47:18 +02:00
..
atmel-quadspi.c
spi: atmel-quadspi: Free resources even if runtime resume failed in .remove()
2023-05-11 23:03:27 +09:00
internals.h
…
Kconfig
spi: spi-zynqmp-gqspi: fix driver kconfig dependencies
2024-01-25 15:27:19 -08:00
Makefile
spi: microchip-core-qspi: Add support for microchip fpga qspi controllers
2022-08-15 12:17:38 +01:00
spi-altera-core.c
…
spi-altera-dfl.c
spi: spi-altera-dfl: Fix an error handling path
2022-06-06 12:39:16 +01:00
spi-altera-platform.c
spi: altera: Change to dynamic allocation of spi id
2021-10-20 01:53:15 +01:00
spi-amd.c
spi: amd: Fix SPI_SPD7 value
2022-11-04 12:25:03 +00:00
spi-ar934x.c
spi: ar934x: fix transfer size
2022-01-04 14:59:40 +00:00
spi-armada-3700.c
spi: a3700: support BE for AC5 SPI driver
2022-07-26 16:51:07 +01:00
spi-aspeed-smc.c
spi: aspeed: Fix window offset of CE1
2022-10-19 14:36:43 +01:00
spi-at91-usart.c
spi: at91-usart: replacing legacy gpio interface for gpiod
2021-10-20 00:23:21 +01:00
spi-ath79.c
spi: ath79: add mem_ops for fast-read
2022-02-08 13:40:18 +00:00
spi-atmel.c
spi: atmel: Fix clock issue when using devices with different polarities
2024-01-05 15:18:38 +01:00
spi-au1550.c
spi: spi-au1550: replace ternary operator with min()
2022-05-16 17:57:01 +01:00
spi-axi-spi-engine.c
spi: axi-spi-engine: fix version format string
2024-05-17 11:55:57 +02:00
spi-bcm63xx-hsspi.c
spi: bcm63xx-hsspi: Fix multi-bit mode setting
2023-03-10 09:33:22 +01:00
spi-bcm63xx.c
spi: bcm63xx: fix max prepend length
2023-07-27 08:50:38 +02:00
spi-bcm2835.c
spi: Updates for v5.20
2022-08-02 10:55:04 -07:00
spi-bcm2835aux.c
spi: bcm2835aux: Convert to use GPIO descriptors
2022-02-01 16:08:47 +00:00
spi-bcm-qspi.c
spi: bcm-qspi: fix SFDP BFPT read by usig mspi read
2024-01-31 16:17:12 -08:00
spi-bcm-qspi.h
…
spi-bitbang-txrx.h
spi: bitbang: Fix lsb-first Rx
2022-08-15 01:26:20 +01:00
spi-bitbang.c
…
spi-brcmstb-qspi.c
…
spi-butterfly.c
…
spi-cadence-quadspi.c
spi: cadence-quadspi: Add missing check for dma_set_mask
2023-06-21 16:00:58 +02:00
spi-cadence-xspi.c
spi: cadence: Ensure data lines set to low during dummy-cycle period
2024-07-11 12:47:18 +02:00
spi-cadence.c
spi: spi-cadence: Fix SPI NO Slave Select macro definition
2022-07-20 18:45:21 +01:00
spi-cavium-octeon.c
…
spi-cavium-thunderx.c
…
spi-cavium.c
…
spi-cavium.h
…
spi-clps711x.c
spi: clps711x: Use syscon_regmap_lookup_by_phandle
2022-04-25 14:01:09 +01:00
spi-coldfire-qspi.c
…
spi-davinci.c
…
spi-dln2.c
spi: dln2: Propagate firmware node
2021-12-23 13:38:38 +00:00
spi-dw-bt1.c
spi: dw: Fix PM disable depth imbalance in dw_spi_bt1_probe
2022-09-26 16:10:36 +01:00
spi-dw-core.c
spi: dw: Round of n_bytes to power of 2
2023-07-19 16:21:05 +02:00
spi-dw-dma.c
spi: dw-dma: decrease reference count in dw_spi_dma_init_mfld()
2022-11-16 13:43:03 +00:00
spi-dw-mmio.c
spi: dw: Remove misleading comment for Mount Evans SoC
2023-07-27 08:50:50 +02:00
spi-dw-pci.c
spi: dw: Put the driver entities naming in order
2021-11-16 14:30:05 +00:00
spi-dw.h
spi: dw: Add support for Intel Thunder Bay SPI controller
2022-07-13 13:32:32 +01:00
spi-ep93xx.c
…
spi-falcon.c
…
spi-fsi.c
spi: fsi: Increase timeout and ensure status is checked
2022-06-23 15:48:21 +01:00
spi-fsl-cpm.c
spi: fsl-cpm: Use 16 bit mode for large transfers with even size
2023-05-17 11:54:00 +02:00
spi-fsl-cpm.h
…
spi-fsl-dspi.c
spi: fsl-dspi: avoid SCK glitches with continuous transfers
2023-06-21 16:00:58 +02:00
spi-fsl-espi.c
…
spi-fsl-lib.c
…
spi-fsl-lib.h
…
spi-fsl-lpspi.c
spi: lpspi: disable lpspi module irq in DMA mode
2023-06-28 11:12:37 +02:00
spi-fsl-qspi.c
spi: spi-fsl-qspi: Use devm_platform_ioremap_resource_byname()
2022-09-26 16:10:41 +01:00
spi-fsl-spi.c
spi: fsl-cpm: Use 16 bit mode for large transfers with even size
2023-05-17 11:54:00 +02:00
spi-fsl-spi.h
…
spi-geni-qcom.c
spi: spi-geni-qcom: enable SPI_CONTROLLER_MUST_TX for GPI DMA mode
2023-07-19 16:22:01 +02:00
spi-gpio.c
spi: spi-gpio: Don't set MOSI as an input if not 3WIRE mode
2022-12-31 13:32:25 +01:00
spi-gxp.c
spi: spi-gxp: BUG: Correct spi write return value
2023-10-06 14:56:46 +02:00
spi-hisi-kunpeng.c
spi: hisi-kunpeng: Delete the dump interface of data registers in debugfs
2024-05-17 11:55:58 +02:00
spi-hisi-sfc-v3xx.c
spi: hisi-sfc-v3xx: Return IRQ_NONE if no interrupts were detected
2024-03-01 13:26:25 +01:00
spi-img-spfi.c
spi: img-spfi: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
2022-09-23 18:21:48 +01:00
spi-imx.c
spi: spi-imx: fix MX51_ECSPI_* macros when cs > 3
2023-05-24 17:32:40 +01:00
spi-ingenic.c
spi: ingenic: Add support for new Ingenic SoCs.
2022-04-25 14:00:51 +01:00
spi-intel-pci.c
spi: intel-pci: Add support for Granite Rapids SPI serial flash
2023-10-06 14:56:55 +02:00
spi-intel-platform.c
mtd: spi-nor: intel-spi: Convert to SPI MEM
2022-02-14 12:53:09 +00:00
spi-intel.c
spi: intel: Check number of chip selects after reading the descriptor
2023-03-17 08:50:20 +01:00
spi-intel.h
mtd: spi-nor: intel-spi: Convert to SPI MEM
2022-02-14 12:53:09 +00:00
spi-iproc-qspi.c
…
spi-jcore.c
…
spi-lantiq-ssc.c
spi: Use of_device_get_match_data()
2022-02-21 13:25:19 +00:00
spi-lm70llp.c
…
spi-loopback-test.c
spi: spi-loopback-test: Add test to trigger DMA/PIO mixing
2022-09-19 15:44:19 +01:00
spi-lp8841-rtc.c
…
spi-mem.c
spi: spi-mem: Fix spi_mem_poll_status()
2022-06-06 12:32:27 +01:00
spi-meson-spicc.c
spi: meson-spicc: fix do_div build error on non-arm64
2022-11-02 12:27:15 +00:00
spi-meson-spifc.c
spi: spi-meson-spifc: Add missing pm_runtime_disable() in meson_spifc_probe
2022-01-07 13:36:38 +00:00
spi-microchip-core-qspi.c
spi: microchip-core-qspi: fix setting spi bus clock rate
2024-05-17 11:56:22 +02:00
spi-microchip-core.c
spi: microchip-core: Simplify some error message
2022-08-15 12:18:41 +01:00
spi-mpc52xx-psc.c
spi: mpc52xx-psc: Switch to using core message queue
2022-06-27 13:24:36 +01:00
spi-mpc52xx.c
spi: mpc52xx: Replace NO_IRQ by 0
2022-10-10 13:01:20 +01:00
spi-mpc512x-psc.c
spi: mpc512x-psc: Fix compile errors
2022-02-02 16:09:29 +00:00
spi-mt65xx.c
spi: spi-mt65xx: Fix NULL pointer access in interrupt handler
2024-03-26 18:21:02 -04:00
spi-mt7621.c
spi: mt7621: Remove 'clk' from 'struct mt7621_spi'
2022-08-29 17:51:39 +01:00
spi-mtk-nor.c
spi: spi-mtk-nor: initialize spi controller after resume
2022-04-12 17:18:51 +01:00
spi-mtk-snfi.c
spi: mtk-snfi: preserve dma_mapping_error() error codes
2022-05-03 14:00:38 +01:00
spi-mux.c
spi: mux: Fix mux interaction with fast path optimisations
2022-09-02 13:27:13 +01:00
spi-mxic.c
spi: mxic: Fix an error handling path in mxic_spi_probe()
2022-04-04 08:45:14 +01:00
spi-mxs.c
spi: mxs: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
2022-04-25 14:00:59 +01:00
spi-npcm-fiu.c
spi: npcm-fiu: Fix UMA reads when dummy.nbytes == 0
2023-11-08 14:10:59 +01:00
spi-npcm-pspi.c
spi: npcm-pspi: Add NPCM845 peripheral SPI support
2022-08-15 12:17:29 +01:00
spi-nxp-fspi.c
spi: nxp-fspi: use the correct ioremap function
2023-11-20 11:51:56 +01:00
spi-oc-tiny.c
…
spi-omap2-mcspi.c
spi: omap2-mcspi: Fix probe so driver works again
2022-09-21 10:28:20 +01:00
spi-omap-100k.c
spi/omap100k:Fix PM disable depth imbalance in omap1_spi100k_probe
2022-09-26 16:10:37 +01:00
spi-omap-uwire.c
ARM: omap1: move perseus spi pinconf to board file
2022-04-21 15:01:08 +02:00
spi-orion.c
spi: orion: Add of_node_put() before goto
2021-10-15 16:10:59 +01:00
spi-pic32-sqi.c
…
spi-pic32.c
spi: pic32: Convert to use GPIO descriptors
2022-01-31 15:17:30 +00:00
spi-pl022.c
spi: spl022: fix Microwire full duplex mode
2021-10-26 11:53:57 +01:00
spi-ppc4xx.c
spi: ppc4xx: Drop write-only variable
2024-02-23 09:12:31 +01:00
spi-pxa2xx-dma.c
…
spi-pxa2xx-pci.c
spi: pxa2xx-pci: Constify struct pxa_spi_info variables
2022-02-28 12:10:27 +00:00
spi-pxa2xx.c
spi: Updates for v6.1
2022-10-04 19:36:53 -07:00
spi-pxa2xx.h
spi: pxa2xx: Get rid of unused ->cs_control()
2021-11-29 12:19:59 +00:00
spi-qcom-qspi.c
…
spi-qup.c
spi: qup: Request DMA before enabling clocks
2023-06-14 11:15:15 +02:00
spi-rb4xx.c
…
spi-realtek-rtl.c
…
spi-rockchip-sfc.c
spi: spi-rockchip: Fix missing unwind goto in rockchip_sfc_probe()
2023-04-26 14:28:34 +02:00
spi-rockchip.c
spi: rockchip: Unmask IRQ at the final to avoid preemption
2022-06-20 11:35:43 +01:00
spi-rpc-if.c
spi: rpc-if: Fix RPM imbalance in probe error path
2022-04-04 08:38:59 +01:00
spi-rspi.c
spi: spi-rspi: Fix PIO fallback on RZ platforms
2022-07-21 17:21:07 +01:00
spi-s3c24xx-regs.h
…
spi-s3c24xx.c
spi: s3c24xx: Switch to use devm_spi_alloc_master()
2022-09-23 18:21:50 +01:00
spi-s3c64xx.c
spi: s3c64xx: clear loopback bit after loopback test
2023-07-27 08:50:39 +02:00
spi-sc18is602.c
…
spi-sh-hspi.c
…
spi-sh-msiof.c
spi: sh-msiof: avoid integer overflow in constants
2024-03-01 13:26:27 +01:00
spi-sh-sci.c
…
spi-sh.c
spi: sh: Switch to using core message queue
2022-06-27 13:24:35 +01:00
spi-sifive.c
spi: sifive: add PM callbacks to support suspend/resume
2022-06-10 13:32:24 +01:00
spi-slave-mt27xx.c
…
spi-slave-system-control.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
spi-slave-time.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
spi-sprd-adi.c
…
spi-sprd.c
spi: spi-sprd: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
2022-04-25 14:00:57 +01:00
spi-st-ssc4.c
spi: st-ssc4: Covert to use GPIO descriptors
2022-02-01 16:08:45 +00:00
spi-stm32-qspi.c
spi: stm32: qspi: Clamp stm32_qspi_get_mode() output to CCR_BUSWIDTH_4
2024-06-27 13:46:23 +02:00
spi-stm32.c
spi: stm32: Don't warn about spurious interrupts
2024-06-12 11:03:58 +02:00
spi-sun4i.c
spi: sun4i: fix typos in comments
2022-03-15 12:03:58 +00:00
spi-sun6i.c
spi: sun6i: fix race between DMA RX transfer completion and RX FIFO drain
2023-10-06 14:56:51 +02:00
spi-sunplus-sp7021.c
spi: remove spin_lock_irq and variable in the irq procress
2022-04-19 13:13:42 +01:00
spi-synquacer.c
spi: synquacer: Fix timeout handling in synquacer_spi_transfer_one()
2023-03-10 09:33:23 +01:00
spi-tegra20-sflash.c
spi: tegra20-sflash: fix to check return value of platform_get_irq() in tegra_sflash_probe()
2023-09-13 09:42:31 +02:00
spi-tegra20-slink.c
spi: tegra: Fix missing IRQ check in tegra_slink_probe()
2023-11-20 11:51:55 +01:00
spi-tegra114.c
spi: spi-tegra114: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
2022-04-19 13:13:44 +01:00
spi-tegra210-quad.c
spi: tegra210-quad: Fix iterator outside loop
2023-03-11 13:55:29 +01:00
spi-test.h
…
spi-ti-qspi.c
spi: spi-ti-qspi: Support per-transfer and per-slave speed_hz settings
2022-06-06 12:41:36 +01:00
spi-tle62x0.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
spi-topcliff-pch.c
spi: topcliff-pch: Use core message validation
2022-06-20 12:43:36 +01:00
spi-uniphier.c
spi: uniphier: fix reference count leak in uniphier_spi_probe()
2022-01-26 15:52:05 +00:00
spi-xcomm.c
…
spi-xilinx.c
spi: xilinx: Switch to use devm_spi_alloc_master()
2022-09-23 18:21:49 +01:00
spi-xlp.c
spi: xlp: Remove Netlogic XLP variants
2021-11-15 13:27:17 +00:00
spi-xtensa-xtfpga.c
spi: xtensa-xtfpga: Switch to use devm_spi_alloc_master()
2022-09-22 14:39:50 +01:00
spi-zynq-qspi.c
spi: spi-zynq-qspi: Fix a NULL pointer dereference in zynq_qspi_exec_mem_op()
2022-02-08 13:37:50 +00:00
spi-zynqmp-gqspi.c
spi: zynqmp-gqspi: fix clock imbalance on probe failure
2023-10-10 22:00:34 +02:00
spi.c
spi: Don't mark message DMA mapped when no transfer in it is
2024-06-12 11:03:54 +02:00
spidev.c
spi: spidev: remove debug messages that access spidev->spi without locking
2023-02-01 08:34:32 +01:00