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# SPDX-License-Identifier: GPL-2.0-only
menuconfig MTD_SPI_NOR
tristate "SPI-NOR device support"
depends on MTD
help
This is the framework for the SPI NOR which can be used by the SPI
device drivers and the SPI-NOR device driver.
if MTD_SPI_NOR
config MTD_SPI_NOR_USE_4K_SECTORS
bool "Use small 4096 B erase sectors"
default y
help
Many flash memories support erasing small (4096 B) sectors. Depending
on the usage this feature may provide performance gain in comparison
to erasing whole blocks (32/64 KiB).
Changing a small part of the flash's contents is usually faster with
small sectors. On the other hand erasing should be faster when using
64 KiB block instead of 16 × 4 KiB sectors.
Please note that some tools/drivers/filesystems may not work with
4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum).
config SPI_ASPEED_SMC
tristate "Aspeed flash controllers in SPI mode"
depends on ARCH_ASPEED || COMPILE_TEST
depends on HAS_IOMEM && OF
help
This enables support for the Firmware Memory controller (FMC)
in the Aspeed AST2500/AST2400 SoCs when attached to SPI NOR chips,
and support for the SPI flash memory controller (SPI) for
the host firmware. The implementation only supports SPI NOR.
config SPI_CADENCE_QUADSPI
tristate "Cadence Quad SPI controller"
depends on OF && (ARM || ARM64 || COMPILE_TEST)
help
Enable support for the Cadence Quad SPI Flash controller.
Cadence QSPI is a specialized controller for connecting an SPI
Flash over 1/2/4-bit wide bus. Enable this option if you have a
device with a Cadence QSPI controller and want to access the
Flash as an MTD device.
config SPI_HISI_SFC
tristate "Hisilicon SPI-NOR Flash Controller(SFC)"
depends on ARCH_HISI || COMPILE_TEST
depends on HAS_IOMEM
help
This enables support for hisilicon SPI-NOR flash controller.
config SPI_MTK_QUADSPI
tristate "MediaTek Quad SPI controller"
depends on HAS_IOMEM
help
This enables support for the Quad SPI controller in master mode.
This controller does not support generic SPI. It only supports
SPI NOR.
config SPI_NXP_SPIFI
tristate "NXP SPI Flash Interface (SPIFI)"
depends on OF && (ARCH_LPC18XX || COMPILE_TEST)
depends on HAS_IOMEM
help
Enable support for the NXP LPC SPI Flash Interface controller.
SPIFI is a specialized controller for connecting serial SPI
Flash. Enable this option if you have a device with a SPIFI
controller and want to access the Flash as a mtd device.
config SPI_INTEL_SPI
tristate
config SPI_INTEL_SPI_PCI
tristate "Intel PCH/PCU SPI flash PCI driver (DANGEROUS)"
depends on X86 && PCI
select SPI_INTEL_SPI
help
This enables PCI support for the Intel PCH/PCU SPI controller in
master mode. This controller is present in modern Intel hardware
and is used to hold BIOS and other persistent settings. Using
this driver it is possible to upgrade BIOS directly from Linux.
Say N here unless you know what you are doing. Overwriting the
SPI flash may render the system unbootable.
To compile this driver as a module, choose M here: the module
will be called intel-spi-pci.
config SPI_INTEL_SPI_PLATFORM
tristate "Intel PCH/PCU SPI flash platform driver (DANGEROUS)"
depends on X86
select SPI_INTEL_SPI
help
This enables platform support for the Intel PCH/PCU SPI
controller in master mode. This controller is present in modern
Intel hardware and is used to hold BIOS and other persistent
settings. Using this driver it is possible to upgrade BIOS
directly from Linux.
Say N here unless you know what you are doing. Overwriting the
SPI flash may render the system unbootable.
To compile this driver as a module, choose M here: the module
will be called intel-spi-platform.
config SPI_STM32_QUADSPI
tristate "STM32 Quad SPI controller"
depends on ARCH_STM32 || COMPILE_TEST
help
This enables support for the STM32 Quad SPI controller.
We only connect the NOR to this controller.
endif # MTD_SPI_NOR
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