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1f37033f05
The driver is not meant for normal users at all but instead such users who really know what they are doing and are able to build their own kernel to enable it. Mark both driver Kconfig entries as dangerous to make sure the driver is not accidentally enabled without understanding possible consequences in doing so. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
133 lines
4.5 KiB
Plaintext
133 lines
4.5 KiB
Plaintext
menuconfig MTD_SPI_NOR
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tristate "SPI-NOR device support"
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depends on MTD
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help
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This is the framework for the SPI NOR which can be used by the SPI
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device drivers and the SPI-NOR device driver.
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if MTD_SPI_NOR
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config MTD_MT81xx_NOR
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tristate "Mediatek MT81xx SPI NOR flash controller"
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depends on HAS_IOMEM
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help
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This enables access to SPI NOR flash, using MT81xx SPI NOR flash
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controller. This controller does not support generic SPI BUS, it only
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supports SPI NOR Flash.
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config MTD_SPI_NOR_USE_4K_SECTORS
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bool "Use small 4096 B erase sectors"
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default y
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help
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Many flash memories support erasing small (4096 B) sectors. Depending
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on the usage this feature may provide performance gain in comparison
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to erasing whole blocks (32/64 KiB).
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Changing a small part of the flash's contents is usually faster with
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small sectors. On the other hand erasing should be faster when using
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64 KiB block instead of 16 × 4 KiB sectors.
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Please note that some tools/drivers/filesystems may not work with
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4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum).
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config SPI_ASPEED_SMC
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tristate "Aspeed flash controllers in SPI mode"
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depends on ARCH_ASPEED || COMPILE_TEST
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depends on HAS_IOMEM && OF
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help
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This enables support for the Firmware Memory controller (FMC)
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in the Aspeed AST2500/AST2400 SoCs when attached to SPI NOR chips,
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and support for the SPI flash memory controller (SPI) for
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the host firmware. The implementation only supports SPI NOR.
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config SPI_ATMEL_QUADSPI
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tristate "Atmel Quad SPI Controller"
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depends on ARCH_AT91 || (ARM && COMPILE_TEST)
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depends on OF && HAS_IOMEM
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help
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This enables support for the Quad SPI controller in master mode.
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This driver does not support generic SPI. The implementation only
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supports SPI NOR.
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config SPI_CADENCE_QUADSPI
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tristate "Cadence Quad SPI controller"
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depends on OF && (ARM || ARM64 || COMPILE_TEST)
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help
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Enable support for the Cadence Quad SPI Flash controller.
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Cadence QSPI is a specialized controller for connecting an SPI
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Flash over 1/2/4-bit wide bus. Enable this option if you have a
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device with a Cadence QSPI controller and want to access the
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Flash as an MTD device.
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config SPI_FSL_QUADSPI
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tristate "Freescale Quad SPI controller"
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depends on ARCH_MXC || SOC_LS1021A || ARCH_LAYERSCAPE || COMPILE_TEST
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depends on HAS_IOMEM
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help
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This enables support for the Quad SPI controller in master mode.
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This controller does not support generic SPI. It only supports
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SPI NOR.
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config SPI_HISI_SFC
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tristate "Hisilicon SPI-NOR Flash Controller(SFC)"
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depends on ARCH_HISI || COMPILE_TEST
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depends on HAS_IOMEM && HAS_DMA
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help
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This enables support for hisilicon SPI-NOR flash controller.
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config SPI_NXP_SPIFI
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tristate "NXP SPI Flash Interface (SPIFI)"
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depends on OF && (ARCH_LPC18XX || COMPILE_TEST)
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depends on HAS_IOMEM
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help
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Enable support for the NXP LPC SPI Flash Interface controller.
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SPIFI is a specialized controller for connecting serial SPI
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Flash. Enable this option if you have a device with a SPIFI
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controller and want to access the Flash as a mtd device.
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config SPI_INTEL_SPI
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tristate
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config SPI_INTEL_SPI_PCI
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tristate "Intel PCH/PCU SPI flash PCI driver (DANGEROUS)"
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depends on X86 && PCI
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select SPI_INTEL_SPI
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help
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This enables PCI support for the Intel PCH/PCU SPI controller in
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master mode. This controller is present in modern Intel hardware
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and is used to hold BIOS and other persistent settings. Using
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this driver it is possible to upgrade BIOS directly from Linux.
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Say N here unless you know what you are doing. Overwriting the
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SPI flash may render the system unbootable.
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To compile this driver as a module, choose M here: the module
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will be called intel-spi-pci.
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config SPI_INTEL_SPI_PLATFORM
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tristate "Intel PCH/PCU SPI flash platform driver (DANGEROUS)"
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depends on X86
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select SPI_INTEL_SPI
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help
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This enables platform support for the Intel PCH/PCU SPI
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controller in master mode. This controller is present in modern
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Intel hardware and is used to hold BIOS and other persistent
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settings. Using this driver it is possible to upgrade BIOS
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directly from Linux.
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Say N here unless you know what you are doing. Overwriting the
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SPI flash may render the system unbootable.
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To compile this driver as a module, choose M here: the module
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will be called intel-spi-platform.
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config SPI_STM32_QUADSPI
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tristate "STM32 Quad SPI controller"
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depends on ARCH_STM32 || COMPILE_TEST
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help
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This enables support for the STM32 Quad SPI controller.
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We only connect the NOR to this controller.
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endif # MTD_SPI_NOR
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