Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-27 06:31:52 +00:00
Code Issues Packages Projects Releases Wiki Activity
ae6a2c4405
linux/drivers/spi
History
Stephan Gerhold 0c331fd1dc
spi: qup: Request DMA before enabling clocks 
It is usually better to request all necessary resources (clocks,
regulators, ...) before starting to make use of them. That way they do
not change state in case one of the resources is not available yet and
probe deferral (-EPROBE_DEFER) is necessary. This is particularly
important for DMA channels and IOMMUs which are not enforced by
fw_devlink yet (unless you use fw_devlink.strict=1).

spi-qup does this in the wrong order, the clocks are enabled and
disabled again when the DMA channels are not available yet.

This causes issues in some cases: On most SoCs one of the SPI QUP
clocks is shared with the UART controller. When using earlycon UART is
actively used during boot but might not have probed yet, usually for
the same reason (waiting for the DMA controller). In this case, the
brief enable/disable cycle ends up gating the clock and further UART
console output will halt the system completely.

Avoid this by requesting the DMA channels before changing the clock
state.

Fixes: 612762e82a ("spi: qup: Add DMA capabilities")
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20230518-spi-qup-clk-defer-v1-1-f49fc9ca4e02@gerhold.net
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-05-30 13:43:31 +01:00
..
atmel-quadspi.c spi: atmel-quadspi: Convert to platform remove callback returning void 2023-03-17 15:47:51 +00:00
internals.h
Kconfig spi: add support for Amlogic A1 SPI Flash Controller 2023-04-11 12:40:30 +01:00
Makefile spi: add support for Amlogic A1 SPI Flash Controller 2023-04-11 12:40:30 +01:00
spi-altera-core.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
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: spi-altera-platform: switch to use modern name 2022-12-29 13:22:05 +00:00
spi-amd.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-amlogic-spifc-a1.c spi: add support for Amlogic A1 SPI Flash Controller 2023-04-11 12:40:30 +01:00
spi-ar934x.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-armada-3700.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-aspeed-smc.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-at91-usart.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-ath79.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-atmel.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-au1550.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-axi-spi-engine.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-bcm63xx-hsspi.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-bcm63xx.c spi: bcm63xx: use macro DEFINE_SIMPLE_DEV_PM_OPS 2023-04-25 16:55:45 +01:00
spi-bcm2835.c spi: bcm2835: Convert to platform remove callback returning void 2023-03-31 12:54:07 +01:00
spi-bcm2835aux.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-bcm-qspi.c spi: bcm-qspi: Mark OF related data as maybe unused 2023-03-13 14:09:12 +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: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
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: brcmstb-qspi: Convert to platform remove callback returning void 2023-03-06 12:31:15 +00:00
spi-butterfly.c
spi-cadence-quadspi.c spi: cadence-quadspi: use macro DEFINE_SIMPLE_DEV_PM_OPS 2023-04-20 12:52:07 +01:00
spi-cadence-xspi.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-cadence.c spi: spi-cadence: Interleave write of TX and read of RX FIFO 2023-05-22 11:41:05 +01:00
spi-cavium-octeon.c spi: cavium-octeon: Convert to platform remove callback returning void 2023-03-06 12:31:17 +00:00
spi-cavium-thunderx.c
spi-cavium.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
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: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-davinci.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-dln2.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-dw-bt1.c spi: dw-bt1: Convert to platform remove callback returning void 2023-03-06 12:31:21 +00:00
spi-dw-core.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
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: Replace spi->chip_select references with function calls 2023-05-16 10:15:06 +09:00
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: ep93xx: Convert to platform remove callback returning void 2023-03-06 12:31:23 +00:00
spi-falcon.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-fsi.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-fsl-cpm.c spi: fsl-cpm: Use 16 bit mode for large transfers with even size 2023-04-05 12:33:34 +01:00
spi-fsl-cpm.h
spi-fsl-dspi.c spi: fsl-dspi: Remove unneeded cast to same type 2023-03-13 14:09:03 +00:00
spi-fsl-espi.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-fsl-lib.c
spi-fsl-lib.h
spi-fsl-lpspi.c spi: lpspi: disable lpspi module irq in DMA mode 2023-05-23 19:22:45 +01:00
spi-fsl-qspi.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-fsl-spi.c spi: fsl-spi: No need to check transfer length versus word size 2023-04-05 12:33:36 +01:00
spi-fsl-spi.h
spi-geni-qcom.c spi: spi-geni-qcom: Select FIFO mode for chip select 2023-05-11 10:18:35 +09:00
spi-gpio.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-gxp.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-hisi-kunpeng.c spi: hisi-kunpeng: Convert to platform remove callback returning void 2023-03-06 12:31:29 +00:00
spi-hisi-sfc-v3xx.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-img-spfi.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-imx.c spi: imx: Use devm_platform_get_and_ioremap_resource() 2023-04-04 12:46:54 +01:00
spi-ingenic.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-intel-pci.c spi: intel-pci: Add support for Meteor Lake-S SPI serial flash 2023-03-31 12:54:07 +01:00
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: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
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: iproc-qspi: Convert to platform remove callback returning void 2023-03-06 12:31:31 +00:00
spi-jcore.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-lantiq-ssc.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-lm70llp.c
spi-loopback-test.c spi: spi-loopback-test: Add module param for iteration length 2023-04-13 11:42:20 +01:00
spi-lp8841-rtc.c
spi-mem.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-meson-spicc.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-meson-spifc.c spi: meson-spifc: Convert to platform remove callback returning void 2023-03-06 12:31:33 +00:00
spi-microchip-core-qspi.c spi: microchip-core-qspi: Convert to platform remove callback returning void 2023-03-06 12:31:34 +00:00
spi-microchip-core.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-mpc52xx-psc.c spi: mpc5xxx-psc: Consistently use device property APIs 2023-03-07 13:58:34 +00:00
spi-mpc52xx.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-mpc512x-psc.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-mt65xx.c spi: mt65xx: make sure operations completed before unloading 2023-05-23 23:19:55 +01:00
spi-mt7621.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-mtk-nor.c spi: mtk-nor: Convert to platform remove callback returning void 2023-03-06 21:17:45 +00:00
spi-mtk-snfi.c spi: mtk-snfi: Convert to platform remove callback returning void 2023-03-06 21:17:46 +00:00
spi-mux.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-mxic.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-mxs.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-npcm-fiu.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-npcm-pspi.c spi: npcm-pspi: Convert to platform remove callback returning void 2023-03-06 21:17:50 +00:00
spi-nxp-fspi.c spi: spi-nxp-fspi: use DLL calibration when clock rate > 100MHz 2023-03-22 13:17:43 +00:00
spi-oc-tiny.c spi: oc-tiny: Convert to platform remove callback returning void 2023-03-06 21:17:51 +00:00
spi-omap2-mcspi.c spi: omap2-mcspi: Use devm_platform_get_and_ioremap_resource() 2023-03-27 12:42:32 +01:00
spi-omap-uwire.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-orion.c spi: orion: Use devm_platform_get_and_ioremap_resource() 2023-03-27 12:42:33 +01:00
spi-pci1xxxx.c spi: mchp-pci1xxxx: Fix improper implementation of disabling chip select lines 2023-04-05 12:33:28 +01:00
spi-pic32-sqi.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-pic32.c spi: pic32: Use devm_platform_get_and_ioremap_resource() 2023-03-27 12:42:34 +01:00
spi-pl022.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-ppc4xx.c spi: ppc4xx: Convert to platform remove callback returning void 2023-03-06 21:17:57 +00:00
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: pxa2xx: Mark OF related data as maybe unused 2023-03-13 14:09:11 +00:00
spi-pxa2xx.h spi: pxa2xx: Get rid of unused ->cs_control() 2021-11-29 12:19:59 +00:00
spi-qcom-qspi.c spi: spi-qcom-qspi: Support pinctrl sleep states 2023-03-28 01:26:10 +01:00
spi-qup.c spi: qup: Request DMA before enabling clocks 2023-05-30 13:43:31 +01:00
spi-rb4xx.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-realtek-rtl.c
spi-rockchip-sfc.c spi: Updates for v6.4 2023-04-27 11:02:26 -07:00
spi-rockchip.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-rpc-if.c spi: rpc-if: Convert to platform remove callback returning void 2023-03-06 21:18:02 +00:00
spi-rspi.c spi: rspi: Mark OF related data as maybe unused 2023-03-13 14:09:15 +00:00
spi-s3c64xx.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-sc18is602.c spi: sc18is602: Mark OF related data as maybe unused 2023-03-13 14:09:14 +00:00
spi-sh-hspi.c spi: sh-hspi: Convert to platform remove callback returning void 2023-03-06 21:18:06 +00:00
spi-sh-msiof.c spi: struct spi_device constification 2023-03-13 18:19:31 +00:00
spi-sh-sci.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-sh.c spi: sh: Convert to platform remove callback returning void 2023-03-06 21:18:08 +00:00
spi-sifive.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-slave-mt27xx.c spi: slave-mt27xx: Convert to platform remove callback returning void 2023-03-06 21:18:10 +00:00
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-sn-f-ospi.c spi: f_ospi: Add missing spi_mem_default_supports_op() helper 2023-03-22 13:17:43 +00:00
spi-sprd-adi.c spi: sprd-adi: Use devm_platform_get_and_ioremap_resource() 2023-03-27 12:42:35 +01:00
spi-sprd.c spi: sprd: Use devm_platform_get_and_ioremap_resource() 2023-03-27 12:42:35 +01:00
spi-st-ssc4.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-stm32-qspi.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-stm32.c spi: stm32: Use devm_platform_get_and_ioremap_resource() 2023-04-04 12:46:55 +01:00
spi-sun4i.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-sun6i.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-sunplus-sp7021.c spi: sunplus-sp7021: Convert to platform remove callback returning void 2023-03-06 21:18:18 +00:00
spi-synquacer.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-tegra20-sflash.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-tegra20-slink.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-tegra114.c spi: tegra114: Use devm_platform_get_and_ioremap_resource() 2023-04-04 12:46:56 +01:00
spi-tegra210-quad.c spi: tegra210-quad: Enable TPM wait polling 2023-04-21 14:37:04 +01:00
spi-test.h
spi-ti-qspi.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-tle62x0.c spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
spi-topcliff-pch.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-uniphier.c spi: uniphier: Convert to platform remove callback returning void 2023-03-06 21:18:24 +00:00
spi-wpcm-fiu.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-xcomm.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-xilinx.c spi: xilinx: Use devm_platform_get_and_ioremap_resource() 2023-03-28 14:49:37 +01:00
spi-xlp.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-xtensa-xtfpga.c spi: xtensa-xtfpga: Convert to platform remove callback returning void 2023-03-06 21:18:26 +00:00
spi-zynq-qspi.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi-zynqmp-gqspi.c spi: Replace all spi->chip_select and spi->cs_gpiod references with function call 2023-03-11 12:34:01 +00:00
spi.c Char/Misc drivers for 6.4-rc1 2023-04-27 12:07:50 -07:00
spidev.c Driver core changes for 6.4-rc1 2023-04-27 11:53:57 -07:00