1 # SPDX-License-Identifier: GPL-2.0-only
7 bool "Memory Controller drivers"
9 This option allows to enable specific memory controller drivers,
10 useful mostly on embedded systems. These could be controllers
11 for DRAM (SDR, DDR), ROM, SRAM and others. The drivers features
12 vary from memory tuning and frequency scaling to enabling
13 access to attached peripherals through memory bus.
20 Data from JEDEC specs for DDR SDRAM memories,
21 particularly the AC timing parameters and addressing
22 information. This data is useful for drivers handling
23 DDR SDRAM controllers.
26 tristate "ARM PL172 MPMC driver"
27 depends on ARM_AMBA && OF
29 This selects the ARM PrimeCell PL172 MultiPort Memory Controller.
30 If you have an embedded system with an AMBA bus and a PL172
31 controller, say Y or M here.
34 bool "Atmel EBI driver"
35 default y if ARCH_AT91
36 depends on ARCH_AT91 || COMPILE_TEST
41 Driver for Atmel EBI controller.
42 Used to configure the EBI (external bus interface) when the device-
43 tree is used. This bus supports NANDs, external ethernet controller,
44 SRAMs, ATA devices, etc.
47 tristate "Broadcom STB DPFE driver"
49 depends on ARCH_BRCMSTB || COMPILE_TEST
51 This driver provides access to the DPFE interface of Broadcom
52 STB SoCs. The firmware running on the DCPU inside the DDR PHY can
53 provide current information about the system's RAM, for instance
54 the DRAM refresh rate. This can be used as an indirect indicator
55 for the DRAM's temperature. Slower refresh rate means cooler RAM,
56 higher refresh rate means hotter RAM.
59 tristate "Broadcom STB MEMC driver"
61 depends on ARCH_BRCMSTB || COMPILE_TEST
63 This driver provides a way to configure the Broadcom STB memory
64 controller and specifically control the Self Refresh Power Down
65 (SRPD) inactivity timeout.
68 bool "Baikal-T1 CM2 L2-RAM Cache Control Block"
69 depends on MIPS_BAIKAL_T1 || COMPILE_TEST
72 Baikal-T1 CPU is based on the MIPS P5600 Warrior IP-core. The CPU
73 resides Coherency Manager v2 with embedded 1MB L2-cache. It's
74 possible to tune the L2 cache performance up by setting the data,
75 tags and way-select latencies of RAM access. This driver provides a
76 dt properties-based and sysfs interface for it.
79 tristate "Texas Instruments AEMIF driver"
80 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
83 This driver is for the AEMIF module available in Texas Instruments
84 SoCs. AEMIF stands for Asynchronous External Memory Interface and
85 is intended to provide a glue-less interface to a variety of
86 asynchronuous memory devices like ASRAM, NOR and NAND memory. A total
87 of 256M bytes of any of these memories can be accessed at a given
88 time via four chip selects with 64M byte access per chip select.
91 tristate "Texas Instruments EMIF driver"
92 depends on ARCH_OMAP2PLUS || COMPILE_TEST
95 This driver is for the EMIF module available in Texas Instruments
96 SoCs. EMIF is an SDRAM controller that, based on its revision,
97 supports one or more of DDR2, DDR3, and LPDDR2 SDRAM protocols.
98 This driver takes care of only LPDDR2 memories presently. The
99 functions of the driver includes re-configuring AC timing
100 parameters and other settings during frequency, voltage and
104 tristate "Texas Instruments OMAP SoC GPMC driver"
105 depends on OF_ADDRESS
106 depends on ARCH_OMAP2PLUS || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
109 This driver is for the General Purpose Memory Controller (GPMC)
110 present on Texas Instruments SoCs (e.g. OMAP2+). GPMC allows
111 interfacing to a variety of asynchronous as well as synchronous
112 memory drives like NOR, NAND, OneNAND, SRAM.
114 config OMAP_GPMC_DEBUG
115 bool "Enable GPMC debug output and skip reset of GPMC during init"
118 Enables verbose debugging mostly to decode the bootloader provided
119 timings. To preserve the bootloader provided timings, the reset
120 of GPMC is skipped during init. Enable this during development to
121 configure devices connected to the GPMC bus.
123 NOTE: In addition to matching the register setup with the bootloader
124 you also need to match the GPMC FCLK frequency used by the
125 bootloader or else the GPMC timings won't be identical with the
129 tristate "Texas Instruments EMIF SRAM driver"
130 depends on SOC_AM33XX || SOC_AM43XX || (ARM && CPU_V7 && COMPILE_TEST)
133 This driver is for the EMIF module available on Texas Instruments
134 AM33XX and AM43XX SoCs and is required for PM. Certain parts of
135 the EMIF PM code must run from on-chip SRAM late in the suspend
136 sequence so this driver provides several relocatable PM functions
137 for the SoC PM code to use.
140 tristate "FPGA DFL EMIF Driver"
141 depends on FPGA_DFL && HAS_IOMEM
143 This driver is for the EMIF private feature implemented under
144 FPGA Device Feature List (DFL) framework. It is used to expose
145 memory interface status information as well as memory clearing
149 bool "Marvell EBU Device Bus Controller"
150 default y if PLAT_ORION
151 depends on PLAT_ORION || COMPILE_TEST
154 This driver is for the Device Bus controller available in some
155 Marvell EBU SoCs such as Discovery (mv78xx0), Orion (88f5xxx) and
156 Armada 370 and Armada XP. This controller allows to handle flash
157 devices such as NOR, NAND, SRAM, and FPGA.
159 config FSL_CORENET_CF
160 tristate "Freescale CoreNet Error Reporting"
161 depends on FSL_SOC_BOOKE || COMPILE_TEST
163 Say Y for reporting of errors from the Freescale CoreNet
164 Coherency Fabric. Errors reported include accesses to
165 physical addresses that mapped by no local access window
166 (LAW) or an invalid LAW, as well as bad cache state that
167 represents a coherency violation.
170 bool "Freescale IFC driver"
171 depends on FSL_SOC || ARCH_LAYERSCAPE || SOC_LS1021A || COMPILE_TEST
175 bool "Ingenic JZ4780 SoC NEMC driver"
176 depends on MIPS || COMPILE_TEST
177 depends on HAS_IOMEM && OF
179 This driver is for the NAND/External Memory Controller (NEMC) in
180 the Ingenic JZ4780. This controller is used to handle external
181 memory devices such as NAND and SRAM.
184 tristate "MediaTek SoC Memory Controller driver" if COMPILE_TEST
185 depends on ARCH_MEDIATEK || COMPILE_TEST
187 This driver is for the Memory Controller module in MediaTek SoCs,
188 mainly help enable/disable iommu and control the power domain and
189 clocks for each local arbiter.
192 bool "Texas Instruments da8xx DDR2/mDDR driver"
193 depends on ARCH_DAVINCI_DA8XX || COMPILE_TEST
195 This driver is for the DDR2/mDDR Memory Controller present on
196 Texas Instruments da8xx SoCs. It's used to tweak various memory
197 controller configuration options.
200 tristate "ARM PL35X Static Memory Controller(SMC) driver"
202 depends on ARM || COMPILE_TEST
205 This driver is for the ARM PL351/PL353 Static Memory
206 Controller(SMC) module.
209 tristate "Renesas RPC-IF driver"
210 depends on ARCH_RENESAS || COMPILE_TEST
212 select RESET_CONTROLLER
214 This supports Renesas R-Car Gen3 or RZ/G2 RPC-IF which provides
215 either SPI host or HyperFlash. You'll have to select individual
216 components under the corresponding menu.
218 config STM32_FMC2_EBI
219 tristate "Support for FMC2 External Bus Interface on STM32MP SoCs"
220 depends on ARCH_STM32 || COMPILE_TEST
223 Select this option to enable the STM32 FMC2 External Bus Interface
224 controller. This driver configures the transactions with external
225 devices (like SRAM, ethernet adapters, FPGAs, LCD displays, ...) on
226 SOCs containing the FMC2 External Bus Interface.
228 source "drivers/memory/samsung/Kconfig"
229 source "drivers/memory/tegra/Kconfig"