Linux v5.4-rc3 - memory
# SPDX-License-Identifier: GPL-2.0-only
# Memory devices
bool "Memory Controller drivers"
Data from JEDEC specs for DDR SDRAM memories,
particularly the AC timing parameters and addressing
information. This data is useful for drivers handling
DDR SDRAM controllers.
tristate "ARM PL172 MPMC driver"
depends on ARM_AMBA && OF
This selects the ARM PrimeCell PL172 MultiPort Memory Controller.
If you have an embedded system with an AMBA bus and a PL172
controller, say Y or M here.
bool "Atmel (Multi-port DDR-)SDRAM Controller"
depends on ARCH_AT91 && OF
This driver is for Atmel SDRAM Controller or Atmel Multi-port
DDR-SDRAM Controller available on Atmel AT91SAM9 and SAMA5 SoCs.
Starting with the at91sam9g45, this controller supports SDR, DDR and
bool "Atmel EBI driver"
depends on ARCH_AT91 && OF
Driver for Atmel EBI controller.
Used to configure the EBI (external bus interface) when the device-
tree is used. This bus supports NANDs, external ethernet controller,
SRAMs, ATA devices, etc.
tristate "Texas Instruments AEMIF driver"
depends on (ARCH_DAVINCI || ARCH_KEYSTONE) && OF
This driver is for the AEMIF module available in Texas Instruments
SoCs. AEMIF stands for Asynchronous External Memory Interface and
is intended to provide a glue-less interface to a variety of
asynchronuous memory devices like ASRAM, NOR and NAND memory. A total
of 256M bytes of any of these memories can be accessed at a given
time via four chip selects with 64M byte access per chip select.
tristate "Texas Instruments EMIF driver"
depends on ARCH_OMAP2PLUS
This driver is for the EMIF module available in Texas Instruments
SoCs. EMIF is an SDRAM controller that, based on its revision,
supports one or more of DDR2, DDR3, and LPDDR2 SDRAM protocols.
This driver takes care of only LPDDR2 memories presently. The
functions of the driver includes re-configuring AC timing
parameters and other settings during frequency, voltage and
This driver is for the General Purpose Memory Controller (GPMC)
present on Texas Instruments SoCs (e.g. OMAP2+). GPMC allows
interfacing to a variety of asynchronous as well as synchronous
memory drives like NOR, NAND, OneNAND, SRAM.
bool "Enable GPMC debug output and skip reset of GPMC during init"
depends on OMAP_GPMC
Enables verbose debugging mostly to decode the bootloader provided
timings. To preserve the bootloader provided timings, the reset
of GPMC is skipped during init. Enable this during development to
configure devices connected to the GPMC bus.
NOTE: In addition to matching the register setup with the bootloader
you also need to match the GPMC FCLK frequency used by the
bootloader or else the GPMC timings won't be identical with the
tristate "Texas Instruments EMIF SRAM driver"
depends on (SOC_AM33XX || SOC_AM43XX) && SRAM
This driver is for the EMIF module available on Texas Instruments
AM33XX and AM43XX SoCs and is required for PM. Certain parts of
the EMIF PM code must run from on-chip SRAM late in the suspend
sequence so this driver provides several relocatable PM functions
for the SoC PM code to use.
bool "Marvell EBU Device Bus Controller"
depends on PLAT_ORION && OF
This driver is for the Device Bus controller available in some
Marvell EBU SoCs such as Discovery (mv78xx0), Orion (88f5xxx) and
Armada 370 and Armada XP. This controller allows to handle flash
devices such as NOR, NAND, SRAM, and FPGA.
tristate "Freescale CoreNet Error Reporting"
depends on FSL_SOC_BOOKE
Say Y for reporting of errors from the Freescale CoreNet
Coherency Fabric. Errors reported include accesses to
physical addresses that mapped by no local access window
(LAW) or an invalid LAW, as well as bad cache state that
represents a coherency violation.
depends on FSL_SOC || ARCH_LAYERSCAPE || SOC_LS1021A || COMPILE_TEST
depends on HAS_IOMEM
bool "Ingenic JZ4780 SoC NEMC driver"
depends on MIPS || COMPILE_TEST
depends on HAS_IOMEM && OF
This driver is for the NAND/External Memory Controller (NEMC) in
the Ingenic JZ4780. This controller is used to handle external
memory devices such as NAND and SRAM.
depends on ARCH_MEDIATEK || COMPILE_TEST
This driver is for the Memory Controller module in MediaTek SoCs,
mainly help enable/disable iommu and control the power domain and
clocks for each local arbiter.
bool "Texas Instruments da8xx DDR2/mDDR driver"
depends on ARCH_DAVINCI_DA8XX
This driver is for the DDR2/mDDR Memory Controller present on
Texas Instruments da8xx SoCs. It's used to tweak various memory
controller configuration options.
tristate "ARM PL35X Static Memory Controller(SMC) driver"
depends on ARM
depends on ARM_AMBA
This driver is for the ARM PL351/PL353 Static Memory