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/usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/drivers/spi/Kconfig
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# # SPI driver configuration # menuconfig SPI bool "SPI support" depends on HAS_IOMEM help The "Serial Peripheral Interface" is a low level synchronous protocol. Chips that support SPI can have data transfer rates up to several tens of Mbit/sec. Chips are addressed with a controller and a chipselect. Most SPI slaves don't support dynamic device discovery; some are even write-only or read-only. SPI is widely used by microcontrollers to talk with sensors, eeprom and flash memory, codecs and various other controller chips, analog to digital (and d-to-a) converters, and more. MMC and SD cards can be accessed using SPI protocol; and for DataFlash cards used in MMC sockets, SPI must always be used. SPI is one of a family of similar protocols using a four wire interface (select, clock, data in, data out) including Microwire (half duplex), SSP, SSI, and PSP. This driver framework should work with most such devices and controllers. if SPI config SPI_DEBUG bool "Debug support for SPI drivers" depends on DEBUG_KERNEL help Say "yes" to enable debug messaging (like dev_dbg and pr_debug), sysfs, and debugfs support in SPI controller and protocol drivers. # # MASTER side ... talking to discrete SPI slave chips including microcontrollers # config SPI_MASTER # bool "SPI Master Support" bool default SPI help If your system has an master-capable SPI controller (which provides the clock and chipselect), you can enable that controller and the protocol drivers for the SPI slave chips that are connected. if SPI_MASTER config SPI_MEM bool "SPI memory extension" help Enable this option if you want to enable the SPI memory extension. This extension is meant to simplify interaction with SPI memories by providing a high-level interface to send memory-like commands. comment "SPI Master Controller Drivers" config SPI_ALTERA tristate "Altera SPI Controller" help This is the driver for the Altera SPI Controller. config SPI_ATH79 tristate "Atheros AR71XX/AR724X/AR913X SPI controller driver" depends on ATH79 && GPIOLIB select SPI_BITBANG help This enables support for the SPI controller present on the Atheros AR71XX/AR724X/AR913X SoCs. config SPI_ARMADA_3700 tristate "Marvell Armada 3700 SPI Controller" depends on (ARCH_MVEBU && OF) || COMPILE_TEST help This enables support for the SPI controller present on the Marvell Armada 3700 SoCs. config SPI_ATMEL tristate "Atmel SPI Controller" depends on ARCH_AT91 || COMPILE_TEST help This selects a driver for the Atmel SPI Controller, present on many AT91 ARM chips. config SPI_AU1550 tristate "Au1550/Au1200/Au1300 SPI Controller" depends on MIPS_ALCHEMY select SPI_BITBANG help If you say yes to this option, support will be included for the PSC SPI controller found on Au1550, Au1200 and Au1300 series. config SPI_AXI_SPI_ENGINE tristate "Analog Devices AXI SPI Engine controller" depends on HAS_IOMEM help This enables support for the Analog Devices AXI SPI Engine SPI controller. It is part of the SPI Engine framework that is used in some Analog Devices reference designs for FPGAs. config SPI_BCM2835 tristate "BCM2835 SPI controller" depends on GPIOLIB depends on ARCH_BCM2835 || COMPILE_TEST help This selects a driver for the Broadcom BCM2835 SPI master. The BCM2835 contains two types of SPI master controller; the "universal SPI master", and the regular SPI controller. This driver is for the regular SPI controller. Slave mode operation is not also not supported. config SPI_BCM2835AUX tristate "BCM2835 SPI auxiliary controller" depends on (ARCH_BCM2835 && GPIOLIB) || COMPILE_TEST help This selects a driver for the Broadcom BCM2835 SPI aux master. The BCM2835 contains two types of SPI master controller; the "universal SPI master", and the regular SPI controller. This driver is for the universal/auxiliary SPI controller. config SPI_BCM63XX tristate "Broadcom BCM63xx SPI controller" depends on BCM63XX || COMPILE_TEST help Enable support for the SPI controller on the Broadcom BCM63xx SoCs. config SPI_BCM63XX_HSSPI tristate "Broadcom BCM63XX HS SPI controller driver" depends on BCM63XX || COMPILE_TEST help This enables support for the High Speed SPI controller present on newer Broadcom BCM63XX SoCs. config SPI_BCM_QSPI tristate "Broadcom BSPI and MSPI controller support" depends on ARCH_BRCMSTB || ARCH_BCM || ARCH_BCM_IPROC || \ BMIPS_GENERIC || COMPILE_TEST default ARCH_BCM_IPROC help Enables support for the Broadcom SPI flash and MSPI controller. Select this option for any one of BRCMSTB, iProc NSP and NS2 SoCs based platforms. This driver works for both SPI master for spi-nor flash device as well as MSPI device. config SPI_BITBANG tristate "Utilities for Bitbanging SPI masters" help With a few GPIO pins, your system can bitbang the SPI protocol. Select this to get SPI support through I/O pins (GPIO, parallel port, etc). Or, some systems' SPI master controller drivers use this code to manage the per-word or per-transfer accesses to the hardware shift registers. This is library code, and is automatically selected by drivers that need it. You only need to select this explicitly to support driver modules that aren't part of this kernel tree. config SPI_BUTTERFLY tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)" depends on PARPORT select SPI_BITBANG help This uses a custom parallel port cable to connect to an AVR Butterfly <http://www.atmel.com/products/avr/butterfly>, an inexpensive battery powered microcontroller evaluation board. This same cable can be used to flash new firmware. config SPI_CADENCE tristate "Cadence SPI controller" help This selects the Cadence SPI controller master driver used by Xilinx Zynq and ZynqMP. config SPI_CLPS711X tristate "CLPS711X host SPI controller" depends on ARCH_CLPS711X || COMPILE_TEST help This enables dedicated general purpose SPI/Microwire1-compatible master mode interface (SSI1) for CLPS711X-based CPUs. config SPI_COLDFIRE_QSPI tristate "Freescale Coldfire QSPI controller" depends on (M520x || M523x || M5249 || M525x || M527x || M528x || M532x) help This enables support for the Coldfire QSPI controller in master mode. config SPI_DAVINCI tristate "Texas Instruments DaVinci/DA8x/OMAP-L/AM1x SoC SPI controller" depends on ARCH_DAVINCI || ARCH_KEYSTONE select SPI_BITBANG help SPI master controller for DaVinci/DA8x/OMAP-L/AM1x SPI modules. config SPI_DESIGNWARE tristate "DesignWare SPI controller core support" help general driver for SPI controller core from DesignWare config SPI_DW_PCI tristate "PCI interface driver for DW SPI core" depends on SPI_DESIGNWARE && PCI config SPI_DW_MID_DMA bool "DMA support for DW SPI controller on Intel MID platform" depends on SPI_DW_PCI && DW_DMAC_PCI config SPI_DW_MMIO tristate "Memory-mapped io interface driver for DW SPI core" depends on SPI_DESIGNWARE config SPI_DLN2 tristate "Diolan DLN-2 USB SPI adapter" depends on MFD_DLN2 help If you say yes to this option, support will be included for Diolan DLN2, a USB to SPI interface. This driver can also be built as a module. If so, the module will be called spi-dln2. config SPI_EFM32 tristate "EFM32 SPI controller" depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST) select SPI_BITBANG help Driver for the spi controller found on Energy Micro's EFM32 SoCs. config SPI_EP93XX tristate "Cirrus Logic EP93xx SPI controller" depends on ARCH_EP93XX || COMPILE_TEST help This enables using the Cirrus EP93xx SPI controller in master mode. config SPI_FALCON bool "Falcon SPI controller support" depends on SOC_FALCON help The external bus unit (EBU) found on the FALC-ON SoC has SPI emulation that is designed for serial flash access. This driver has only been tested with m25p80 type chips. The hardware has no support for other types of SPI peripherals. config SPI_FSL_LPSPI tristate "Freescale i.MX LPSPI controller" depends on ARCH_MXC || COMPILE_TEST help This enables Freescale i.MX LPSPI controllers in master mode. config SPI_GPIO tristate "GPIO-based bitbanging SPI Master" depends on GPIOLIB || COMPILE_TEST select SPI_BITBANG help This simple GPIO bitbanging SPI master uses the arch-neutral GPIO interface to manage MOSI, MISO, SCK, and chipselect signals. SPI slaves connected to a bus using this driver are configured as usual, except that the spi_board_info.controller_data holds the GPIO number for the chipselect used by this controller driver. Note that this driver often won't achieve even 1 Mbit/sec speeds, making it unusually slow for SPI. If your platform can inline GPIO operations, you should be able to leverage that for better speed with a custom version of this driver; see the source code. config SPI_IMG_SPFI tristate "IMG SPFI controller" depends on MIPS || COMPILE_TEST help This enables support for the SPFI master controller found on IMG SoCs. config SPI_IMX tristate "Freescale i.MX SPI controllers" depends on ARCH_MXC || COMPILE_TEST select SPI_BITBANG help This enables using the Freescale i.MX SPI controllers in master mode. config SPI_JCORE tristate "J-Core SPI Master" depends on OF && (SUPERH || COMPILE_TEST) help This enables support for the SPI master controller in the J-Core synthesizable, open source SoC. config SPI_LM70_LLP tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)" depends on PARPORT select SPI_BITBANG help This driver supports the NS LM70 LLP Evaluation Board, which interfaces to an LM70 temperature sensor using a parallel port. config SPI_LP8841_RTC tristate "ICP DAS LP-8841 SPI Controller for RTC" depends on MACH_PXA27X_DT || COMPILE_TEST help This driver provides an SPI master device to drive Maxim DS-1302 real time clock. Say N here unless you plan to run the kernel on an ICP DAS LP-8x4x industrial computer. config SPI_MPC52xx tristate "Freescale MPC52xx SPI (non-PSC) controller support" depends on PPC_MPC52xx help This drivers supports the MPC52xx SPI controller in master SPI mode. config SPI_MPC52xx_PSC tristate "Freescale MPC52xx PSC SPI controller" depends on PPC_MPC52xx help This enables using the Freescale MPC52xx Programmable Serial Controller in master SPI mode. config SPI_MPC512x_PSC tristate "Freescale MPC512x PSC SPI controller" depends on PPC_MPC512x help This enables using the Freescale MPC5121 Programmable Serial Controller in SPI master mode. config SPI_FSL_LIB tristate depends on OF config SPI_FSL_CPM tristate depends on FSL_SOC config SPI_FSL_SPI tristate "Freescale SPI controller and Aeroflex Gaisler GRLIB SPI controller" depends on OF select SPI_FSL_LIB select SPI_FSL_CPM if FSL_SOC help This enables using the Freescale SPI controllers in master mode. MPC83xx platform uses the controller in cpu mode or CPM/QE mode. MPC8569 uses the controller in QE mode, MPC8610 in cpu mode. This also enables using the Aeroflex Gaisler GRLIB SPI controller in master mode. config SPI_FSL_DSPI tristate "Freescale DSPI controller" select REGMAP_MMIO depends on SOC_VF610 || SOC_LS1021A || ARCH_LAYERSCAPE || M5441x || COMPILE_TEST help This enables support for the Freescale DSPI controller in master mode. VF610 platform uses the controller. config SPI_FSL_ESPI tristate "Freescale eSPI controller" depends on FSL_SOC help This enables using the Freescale eSPI controllers in master mode. From MPC8536, 85xx platform uses the controller, and all P10xx, P20xx, P30xx,P40xx, P50xx uses this controller. config SPI_MESON_SPICC tristate "Amlogic Meson SPICC controller" depends on ARCH_MESON || COMPILE_TEST help This enables master mode support for the SPICC (SPI communication controller) available in Amlogic Meson SoCs. config SPI_MESON_SPIFC tristate "Amlogic Meson SPIFC controller" depends on ARCH_MESON || COMPILE_TEST select REGMAP_MMIO help This enables master mode support for the SPIFC (SPI flash controller) available in Amlogic Meson SoCs. config SPI_MT65XX tristate "MediaTek SPI controller" depends on ARCH_MEDIATEK || COMPILE_TEST help This selects the MediaTek(R) SPI bus driver. If you want to use MediaTek(R) SPI interface, say Y or M here.If you are not sure, say N. SPI drivers for Mediatek MT65XX and MT81XX series ARM SoCs. config SPI_NUC900 tristate "Nuvoton NUC900 series SPI" depends on ARCH_W90X900 select SPI_BITBANG help SPI driver for Nuvoton NUC900 series ARM SoCs config SPI_LANTIQ_SSC tristate "Lantiq SSC SPI controller" depends on LANTIQ || COMPILE_TEST help This driver supports the Lantiq SSC SPI controller in master mode. This controller is found on Intel (former Lantiq) SoCs like the Danube, Falcon, xRX200, xRX300. config SPI_OC_TINY tristate "OpenCores tiny SPI" depends on GPIOLIB || COMPILE_TEST select SPI_BITBANG help This is the driver for OpenCores tiny SPI master controller. config SPI_OCTEON tristate "Cavium OCTEON SPI controller" depends on CAVIUM_OCTEON_SOC help SPI host driver for the hardware found on some Cavium OCTEON SOCs. config SPI_OMAP_UWIRE tristate "OMAP1 MicroWire" depends on ARCH_OMAP1 select SPI_BITBANG help This hooks up to the MicroWire controller on OMAP1 chips. config SPI_OMAP24XX tristate "McSPI driver for OMAP" depends on ARCH_OMAP2PLUS || COMPILE_TEST select SG_SPLIT help SPI master controller for OMAP24XX and later Multichannel SPI (McSPI) modules. config SPI_TI_QSPI tristate "DRA7xxx QSPI controller support" depends on ARCH_OMAP2PLUS || COMPILE_TEST help QSPI master controller for DRA7xxx used for flash devices. This device supports single, dual and quad read support, while it only supports single write mode. config SPI_OMAP_100K tristate "OMAP SPI 100K" depends on ARCH_OMAP850 || ARCH_OMAP730 || COMPILE_TEST help OMAP SPI 100K master controller for omap7xx boards. config SPI_ORION tristate "Orion SPI master" depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST help This enables using the SPI master controller on the Orion and MVEBU chips. config SPI_PIC32 tristate "Microchip PIC32 series SPI" depends on MACH_PIC32 || COMPILE_TEST help SPI driver for Microchip PIC32 SPI master controller. config SPI_PIC32_SQI tristate "Microchip PIC32 Quad SPI driver" depends on MACH_PIC32 || COMPILE_TEST help SPI driver for PIC32 Quad SPI controller. config SPI_PL022 tristate "ARM AMBA PL022 SSP controller" depends on ARM_AMBA default y if MACH_U300 default y if ARCH_REALVIEW default y if INTEGRATOR_IMPD1 default y if ARCH_VERSATILE help This selects the ARM(R) AMBA(R) PrimeCell PL022 SSP controller. If you have an embedded system with an AMBA(R) bus and a PL022 controller, say Y or M here. config SPI_PPC4xx tristate "PPC4xx SPI Controller" depends on PPC32 && 4xx select SPI_BITBANG help This selects a driver for the PPC4xx SPI Controller. config SPI_PXA2XX tristate "PXA2xx SSP SPI master" depends on (ARCH_PXA || ARCH_MMP || PCI || ACPI) select PXA_SSP if ARCH_PXA || ARCH_MMP help This enables using a PXA2xx or Sodaville SSP port as a SPI master controller. The driver can be configured to use any SSP port and additional documentation can be found a Documentation/spi/pxa2xx. config SPI_PXA2XX_PCI def_tristate SPI_PXA2XX && PCI && COMMON_CLK config SPI_ROCKCHIP tristate "Rockchip SPI controller driver" help This selects a driver for Rockchip SPI controller. If you say yes to this option, support will be included for RK3066, RK3188 and RK3288 families of SPI controller. Rockchip SPI controller support DMA transport and PIO mode. The main usecase of this controller is to use spi flash as boot device. config SPI_RB4XX tristate "Mikrotik RB4XX SPI master" depends on SPI_MASTER && ATH79 help SPI controller driver for the Mikrotik RB4xx series boards. config SPI_RSPI tristate "Renesas RSPI/QSPI controller" depends on SUPERH || ARCH_RENESAS || COMPILE_TEST help SPI driver for Renesas RSPI and QSPI blocks. config SPI_QUP tristate "Qualcomm SPI controller with QUP interface" depends on ARCH_QCOM || (ARM && COMPILE_TEST) help Qualcomm Universal Peripheral (QUP) core is an AHB slave that provides a common data path (an output FIFO and an input FIFO) for serial peripheral interface (SPI) mini-core. SPI in master mode supports up to 50MHz, up to four chip selects, programmable data path from 4 bits to 32 bits and numerous protocol variants. This driver can also be built as a module. If so, the module will be called spi_qup. config SPI_S3C24XX tristate "Samsung S3C24XX series SPI" depends on ARCH_S3C24XX select SPI_BITBANG help SPI driver for Samsung S3C24XX series ARM SoCs config SPI_S3C24XX_FIQ bool "S3C24XX driver with FIQ pseudo-DMA" depends on SPI_S3C24XX select FIQ help Enable FIQ support for the S3C24XX SPI driver to provide pseudo DMA by using the fast-interrupt request framework, This allows the driver to get DMA-like performance when there are either no free DMA channels, or when doing transfers that required both TX and RX data paths. config SPI_S3C64XX tristate "Samsung S3C64XX series type SPI" depends on (PLAT_SAMSUNG || ARCH_EXYNOS || COMPILE_TEST) help SPI driver for Samsung S3C64XX and newer SoCs. config SPI_SC18IS602 tristate "NXP SC18IS602/602B/603 I2C to SPI bridge" depends on I2C help SPI driver for NXP SC18IS602/602B/603 I2C to SPI bridge. config SPI_SH_MSIOF tristate "SuperH MSIOF SPI controller" depends on HAVE_CLK depends on ARCH_SHMOBILE || ARCH_RENESAS || COMPILE_TEST help SPI driver for SuperH and SH Mobile MSIOF blocks. config SPI_SH tristate "SuperH SPI controller" depends on SUPERH || COMPILE_TEST help SPI driver for SuperH SPI blocks. config SPI_SH_SCI tristate "SuperH SCI SPI controller" depends on SUPERH select SPI_BITBANG help SPI driver for SuperH SCI blocks. config SPI_SH_HSPI tristate "SuperH HSPI controller" depends on ARCH_RENESAS || COMPILE_TEST help SPI driver for SuperH HSPI blocks. config SPI_SIRF tristate "CSR SiRFprimaII SPI controller" depends on SIRF_DMA select SPI_BITBANG help SPI driver for CSR SiRFprimaII SoCs config SPI_SPRD_ADI tristate "Spreadtrum ADI controller" depends on ARCH_SPRD || COMPILE_TEST depends on HWSPINLOCK || (COMPILE_TEST && !HWSPINLOCK) help ADI driver based on SPI for Spreadtrum SoCs. config SPI_STM32 tristate "STMicroelectronics STM32 SPI controller" depends on ARCH_STM32 || COMPILE_TEST help SPI driver for STMicroelectonics STM32 SoCs. STM32 SPI controller supports DMA and PIO modes. When DMA is not available, the driver automatically falls back to PIO mode. config SPI_ST_SSC4 tristate "STMicroelectronics SPI SSC-based driver" depends on ARCH_STI || COMPILE_TEST help STMicroelectronics SoCs support for SPI. If you say yes to this option, support will be included for the SSC driven SPI. config SPI_SUN4I tristate "Allwinner A10 SoCs SPI controller" depends on ARCH_SUNXI || COMPILE_TEST help SPI driver for Allwinner sun4i, sun5i and sun7i SoCs config SPI_SUN6I tristate "Allwinner A31 SPI controller" depends on ARCH_SUNXI || COMPILE_TEST depends on RESET_CONTROLLER help This enables using the SPI controller on the Allwinner A31 SoCs. config SPI_MXS tristate "Freescale MXS SPI controller" depends on ARCH_MXS select STMP_DEVICE help SPI driver for Freescale MXS devices. config SPI_TEGRA114 tristate "NVIDIA Tegra114 SPI Controller" depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST depends on RESET_CONTROLLER help SPI driver for NVIDIA Tegra114 SPI Controller interface. This controller is different than the older SoCs SPI controller and also register interface get changed with this controller. config SPI_TEGRA20_SFLASH tristate "Nvidia Tegra20 Serial flash Controller" depends on ARCH_TEGRA || COMPILE_TEST depends on RESET_CONTROLLER help SPI driver for Nvidia Tegra20 Serial flash Controller interface. The main usecase of this controller is to use spi flash as boot device. config SPI_TEGRA20_SLINK tristate "Nvidia Tegra20/Tegra30 SLINK Controller" depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST depends on RESET_CONTROLLER help SPI driver for Nvidia Tegra20/Tegra30 SLINK Controller interface. config SPI_THUNDERX tristate "Cavium ThunderX SPI controller" depends on PCI && 64BIT && (ARM64 || COMPILE_TEST) help SPI host driver for the hardware found on Cavium ThunderX SOCs. config SPI_TOPCLIFF_PCH tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) SPI" depends on PCI && (X86_32 || MIPS || COMPILE_TEST) help SPI driver for the Topcliff PCH (Platform Controller Hub) SPI bus used in some x86 embedded processors. This driver also supports the ML7213/ML7223/ML7831, a companion chip for the Atom E6xx series and compatible with the Intel EG20T PCH. config SPI_TXX9 tristate "Toshiba TXx9 SPI controller" depends on GPIOLIB && (CPU_TX49XX || COMPILE_TEST) help SPI driver for Toshiba TXx9 MIPS SoCs config SPI_XCOMM tristate "Analog Devices AD-FMCOMMS1-EBZ SPI-I2C-bridge driver" depends on I2C help Support for the SPI-I2C bridge found on the Analog Devices AD-FMCOMMS1-EBZ board. config SPI_XILINX tristate "Xilinx SPI controller common module" depends on HAS_IOMEM select SPI_BITBANG help This exposes the SPI controller IP from the Xilinx EDK. See the "OPB Serial Peripheral Interface (SPI) (v1.00e)" Product Specification document (DS464) for hardware details. Or for the DS570, see "XPS Serial Peripheral Interface (SPI) (v2.00b)" config SPI_XLP tristate "Netlogic XLP SPI controller driver" depends on CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST help Enable support for the SPI controller on the Netlogic XLP SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX, XLP9XX and XLP5XX. If you have a Netlogic XLP platform say Y here. If unsure, say N. config SPI_XTENSA_XTFPGA tristate "Xtensa SPI controller for xtfpga" depends on (XTENSA && XTENSA_PLATFORM_XTFPGA) || COMPILE_TEST select SPI_BITBANG help SPI driver for xtfpga SPI master controller. This simple SPI master controller is built into xtfpga bitstreams and is used to control daughterboard audio codec. It always transfers 16 bit words in SPI mode 0, automatically asserting CS on transfer start and deasserting on end. config SPI_ZYNQMP_GQSPI tristate "Xilinx ZynqMP GQSPI controller" depends on SPI_MASTER && HAS_DMA help Enables Xilinx GQSPI controller driver for Zynq UltraScale+ MPSoC. config SPI_AMD tristate "AMD SPI controller" depends on SPI_MASTER || COMPILE_TEST help Enables SPI controller driver for AMD SoC. # # Add new SPI master controllers in alphabetical order above this line # # # There are lots of SPI device types, with sensors and memory # being probably the most widely used ones. # comment "SPI Protocol Masters" config SPI_SPIDEV tristate "User mode SPI device driver support" help This supports user mode SPI protocol drivers. Note that this application programming interface is EXPERIMENTAL and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes. config SPI_LOOPBACK_TEST tristate "spi loopback test framework support" depends on m help This enables the SPI loopback testing framework driver primarily used for development of spi_master drivers and to detect regressions config SPI_TLE62X0 tristate "Infineon TLE62X0 (for power switching)" depends on SYSFS help SPI driver for Infineon TLE62X0 series line driver chips, such as the TLE6220, TLE6230 and TLE6240. This provides a sysfs interface, with each line presented as a kind of GPIO exposing both switch control and diagnostic feedback. # # Add new SPI protocol masters in alphabetical order above this line # endif # SPI_MASTER # # SLAVE side ... listening to other SPI masters # config SPI_SLAVE bool "SPI slave protocol handlers" help If your system has a slave-capable SPI controller, you can enable slave protocol handlers. if SPI_SLAVE config SPI_SLAVE_TIME tristate "SPI slave handler reporting boot up time" help SPI slave handler responding with the time of reception of the last SPI message. config SPI_SLAVE_SYSTEM_CONTROL tristate "SPI slave handler controlling system state" help SPI slave handler to allow remote control of system reboot, power off, halt, and suspend. endif # SPI_SLAVE endif # SPI
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