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# SPDX-License-Identifier: GPL-2.0-only
#
# Memory devices
#
menuconfig MEMORY
bool "Memory Controller drivers"
help
This option allows to enable specific memory controller drivers,
useful mostly on embedded systems. These could be controllers
for DRAM (SDR, DDR), ROM, SRAM and others. The drivers features
vary from memory tuning and frequency scaling to enabling
access to attached peripherals through memory bus.
if MEMORY
config DDR
bool
help
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.
config ARM_PL172_MPMC
tristate "ARM PL172 MPMC driver"
depends on ARM_AMBA && OF
help
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.
config ATMEL_SDRAMC
bool "Atmel (Multi-port DDR-)SDRAM Controller"
default y if ARCH_AT91
depends on ARCH_AT91 || COMPILE_TEST
depends on OF
help
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
LP-DDR memories.
config ATMEL_EBI
bool "Atmel EBI driver"
default y if ARCH_AT91
depends on ARCH_AT91 || COMPILE_TEST
depends on OF
select MFD_SYSCON
select MFD_ATMEL_SMC
help
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.
config BRCMSTB_DPFE
tristate "Broadcom STB DPFE driver"
default ARCH_BRCMSTB
depends on ARCH_BRCMSTB || COMPILE_TEST
help
This driver provides access to the DPFE interface of Broadcom
STB SoCs. The firmware running on the DCPU inside the DDR PHY can
provide current information about the system's RAM, for instance
the DRAM refresh rate. This can be used as an indirect indicator
for the DRAM's temperature. Slower refresh rate means cooler RAM,
higher refresh rate means hotter RAM.
config BT1_L2_CTL
bool "Baikal-T1 CM2 L2-RAM Cache Control Block"
depends on MIPS_BAIKAL_T1 || COMPILE_TEST
select MFD_SYSCON
help
Baikal-T1 CPU is based on the MIPS P5600 Warrior IP-core. The CPU
resides Coherency Manager v2 with embedded 1MB L2-cache. It's
possible to tune the L2 cache performance up by setting the data,
tags and way-select latencies of RAM access. This driver provides a
dt properties-based and sysfs interface for it.
config TI_AEMIF
tristate "Texas Instruments AEMIF driver"
depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
depends on OF
help
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.
config TI_EMIF
tristate "Texas Instruments EMIF driver"
depends on ARCH_OMAP2PLUS || COMPILE_TEST
select DDR
help
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
temperature changes
config OMAP_GPMC
tristate "Texas Instruments OMAP SoC GPMC driver"
depends on OF_ADDRESS
select GPIOLIB
help
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.
config OMAP_GPMC_DEBUG
bool "Enable GPMC debug output and skip reset of GPMC during init"
depends on OMAP_GPMC
help
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
bootloader timings.
config TI_EMIF_SRAM
tristate "Texas Instruments EMIF SRAM driver"
depends on SOC_AM33XX || SOC_AM43XX || (ARM && CPU_V7 && COMPILE_TEST)
depends on SRAM
help
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.
config FPGA_DFL_EMIF
tristate "FPGA DFL EMIF Driver"
depends on FPGA_DFL && HAS_IOMEM
help
This driver is for the EMIF private feature implemented under
FPGA Device Feature List (DFL) framework. It is used to expose
memory interface status information as well as memory clearing
control.
config MVEBU_DEVBUS
bool "Marvell EBU Device Bus Controller"
default y if PLAT_ORION
depends on PLAT_ORION || COMPILE_TEST
depends on OF
help
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.
config FSL_CORENET_CF
tristate "Freescale CoreNet Error Reporting"
depends on FSL_SOC_BOOKE || COMPILE_TEST
help
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.
config FSL_IFC
bool "Freescale IFC driver" if COMPILE_TEST
depends on FSL_SOC || ARCH_LAYERSCAPE || SOC_LS1021A || COMPILE_TEST
depends on HAS_IOMEM
config JZ4780_NEMC
bool "Ingenic JZ4780 SoC NEMC driver"
depends on MIPS || COMPILE_TEST
depends on HAS_IOMEM && OF
help
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.
config MTK_SMI
tristate "MediaTek SoC Memory Controller driver" if COMPILE_TEST
depends on ARCH_MEDIATEK || COMPILE_TEST
help
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.
config DA8XX_DDRCTL
bool "Texas Instruments da8xx DDR2/mDDR driver"
depends on ARCH_DAVINCI_DA8XX || COMPILE_TEST
help
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.
config PL353_SMC
tristate "ARM PL35X Static Memory Controller(SMC) driver"
default y if ARM
depends on ARM || COMPILE_TEST
depends on ARM_AMBA
help
This driver is for the ARM PL351/PL353 Static Memory
Controller(SMC) module.
config RENESAS_RPCIF
tristate "Renesas RPC-IF driver"
depends on ARCH_RENESAS || COMPILE_TEST
select REGMAP_MMIO
select RESET_CONTROLLER
help
This supports Renesas R-Car Gen3 or RZ/G2 RPC-IF which provides
either SPI host or HyperFlash. You'll have to select individual
components under the corresponding menu.
config STM32_FMC2_EBI
tristate "Support for FMC2 External Bus Interface on STM32MP SoCs"
depends on MACH_STM32MP157 || COMPILE_TEST
select MFD_SYSCON
help
Select this option to enable the STM32 FMC2 External Bus Interface
controller. This driver configures the transactions with external
devices (like SRAM, ethernet adapters, FPGAs, LCD displays, ...) on
SOCs containing the FMC2 External Bus Interface.
source "drivers/memory/samsung/Kconfig"
source "drivers/memory/tegra/Kconfig"
endif
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