1# SPDX-License-Identifier: GPL-2.0-only 2# 3# Memory devices 4# 5 6menuconfig MEMORY 7 bool "Memory Controller drivers" 8 help 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. 14 15if MEMORY 16 17config DDR 18 bool 19 help 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. 24 25config ARM_PL172_MPMC 26 tristate "ARM PL172 MPMC driver" 27 depends on ARM_AMBA && OF 28 help 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. 32 33config ATMEL_SDRAMC 34 bool "Atmel (Multi-port DDR-)SDRAM Controller" 35 default y if ARCH_AT91 36 depends on ARCH_AT91 || COMPILE_TEST 37 depends on OF 38 help 39 This driver is for Atmel SDRAM Controller or Atmel Multi-port 40 DDR-SDRAM Controller available on Atmel AT91SAM9 and SAMA5 SoCs. 41 Starting with the at91sam9g45, this controller supports SDR, DDR and 42 LP-DDR memories. 43 44config ATMEL_EBI 45 bool "Atmel EBI driver" 46 default y if ARCH_AT91 47 depends on ARCH_AT91 || COMPILE_TEST 48 depends on OF 49 select MFD_SYSCON 50 select MFD_ATMEL_SMC 51 help 52 Driver for Atmel EBI controller. 53 Used to configure the EBI (external bus interface) when the device- 54 tree is used. This bus supports NANDs, external ethernet controller, 55 SRAMs, ATA devices, etc. 56 57config BRCMSTB_DPFE 58 tristate "Broadcom STB DPFE driver" 59 default ARCH_BRCMSTB 60 depends on ARCH_BRCMSTB || COMPILE_TEST 61 help 62 This driver provides access to the DPFE interface of Broadcom 63 STB SoCs. The firmware running on the DCPU inside the DDR PHY can 64 provide current information about the system's RAM, for instance 65 the DRAM refresh rate. This can be used as an indirect indicator 66 for the DRAM's temperature. Slower refresh rate means cooler RAM, 67 higher refresh rate means hotter RAM. 68 69config BRCMSTB_MEMC 70 tristate "Broadcom STB MEMC driver" 71 default ARCH_BRCMSTB 72 depends on ARCH_BRCMSTB || COMPILE_TEST 73 help 74 This driver provides a way to configure the Broadcom STB memory 75 controller and specifically control the Self Refresh Power Down 76 (SRPD) inactivity timeout. 77 78config BT1_L2_CTL 79 bool "Baikal-T1 CM2 L2-RAM Cache Control Block" 80 depends on MIPS_BAIKAL_T1 || COMPILE_TEST 81 select MFD_SYSCON 82 help 83 Baikal-T1 CPU is based on the MIPS P5600 Warrior IP-core. The CPU 84 resides Coherency Manager v2 with embedded 1MB L2-cache. It's 85 possible to tune the L2 cache performance up by setting the data, 86 tags and way-select latencies of RAM access. This driver provides a 87 dt properties-based and sysfs interface for it. 88 89config TI_AEMIF 90 tristate "Texas Instruments AEMIF driver" 91 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST 92 depends on OF 93 help 94 This driver is for the AEMIF module available in Texas Instruments 95 SoCs. AEMIF stands for Asynchronous External Memory Interface and 96 is intended to provide a glue-less interface to a variety of 97 asynchronuous memory devices like ASRAM, NOR and NAND memory. A total 98 of 256M bytes of any of these memories can be accessed at a given 99 time via four chip selects with 64M byte access per chip select. 100 101config TI_EMIF 102 tristate "Texas Instruments EMIF driver" 103 depends on ARCH_OMAP2PLUS || COMPILE_TEST 104 select DDR 105 help 106 This driver is for the EMIF module available in Texas Instruments 107 SoCs. EMIF is an SDRAM controller that, based on its revision, 108 supports one or more of DDR2, DDR3, and LPDDR2 SDRAM protocols. 109 This driver takes care of only LPDDR2 memories presently. The 110 functions of the driver includes re-configuring AC timing 111 parameters and other settings during frequency, voltage and 112 temperature changes 113 114config OMAP_GPMC 115 tristate "Texas Instruments OMAP SoC GPMC driver" 116 depends on OF_ADDRESS 117 depends on ARCH_OMAP2PLUS || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST 118 select GPIOLIB 119 help 120 This driver is for the General Purpose Memory Controller (GPMC) 121 present on Texas Instruments SoCs (e.g. OMAP2+). GPMC allows 122 interfacing to a variety of asynchronous as well as synchronous 123 memory drives like NOR, NAND, OneNAND, SRAM. 124 125config OMAP_GPMC_DEBUG 126 bool "Enable GPMC debug output and skip reset of GPMC during init" 127 depends on OMAP_GPMC 128 help 129 Enables verbose debugging mostly to decode the bootloader provided 130 timings. To preserve the bootloader provided timings, the reset 131 of GPMC is skipped during init. Enable this during development to 132 configure devices connected to the GPMC bus. 133 134 NOTE: In addition to matching the register setup with the bootloader 135 you also need to match the GPMC FCLK frequency used by the 136 bootloader or else the GPMC timings won't be identical with the 137 bootloader timings. 138 139config TI_EMIF_SRAM 140 tristate "Texas Instruments EMIF SRAM driver" 141 depends on SOC_AM33XX || SOC_AM43XX || (ARM && CPU_V7 && COMPILE_TEST) 142 depends on SRAM 143 help 144 This driver is for the EMIF module available on Texas Instruments 145 AM33XX and AM43XX SoCs and is required for PM. Certain parts of 146 the EMIF PM code must run from on-chip SRAM late in the suspend 147 sequence so this driver provides several relocatable PM functions 148 for the SoC PM code to use. 149 150config FPGA_DFL_EMIF 151 tristate "FPGA DFL EMIF Driver" 152 depends on FPGA_DFL && HAS_IOMEM 153 help 154 This driver is for the EMIF private feature implemented under 155 FPGA Device Feature List (DFL) framework. It is used to expose 156 memory interface status information as well as memory clearing 157 control. 158 159config MVEBU_DEVBUS 160 bool "Marvell EBU Device Bus Controller" 161 default y if PLAT_ORION 162 depends on PLAT_ORION || COMPILE_TEST 163 depends on OF 164 help 165 This driver is for the Device Bus controller available in some 166 Marvell EBU SoCs such as Discovery (mv78xx0), Orion (88f5xxx) and 167 Armada 370 and Armada XP. This controller allows to handle flash 168 devices such as NOR, NAND, SRAM, and FPGA. 169 170config FSL_CORENET_CF 171 tristate "Freescale CoreNet Error Reporting" 172 depends on FSL_SOC_BOOKE || COMPILE_TEST 173 help 174 Say Y for reporting of errors from the Freescale CoreNet 175 Coherency Fabric. Errors reported include accesses to 176 physical addresses that mapped by no local access window 177 (LAW) or an invalid LAW, as well as bad cache state that 178 represents a coherency violation. 179 180config FSL_IFC 181 bool "Freescale IFC driver" if COMPILE_TEST 182 depends on FSL_SOC || ARCH_LAYERSCAPE || SOC_LS1021A || COMPILE_TEST 183 depends on HAS_IOMEM 184 185config JZ4780_NEMC 186 bool "Ingenic JZ4780 SoC NEMC driver" 187 depends on MIPS || COMPILE_TEST 188 depends on HAS_IOMEM && OF 189 help 190 This driver is for the NAND/External Memory Controller (NEMC) in 191 the Ingenic JZ4780. This controller is used to handle external 192 memory devices such as NAND and SRAM. 193 194config MTK_SMI 195 tristate "MediaTek SoC Memory Controller driver" if COMPILE_TEST 196 depends on ARCH_MEDIATEK || COMPILE_TEST 197 help 198 This driver is for the Memory Controller module in MediaTek SoCs, 199 mainly help enable/disable iommu and control the power domain and 200 clocks for each local arbiter. 201 202config DA8XX_DDRCTL 203 bool "Texas Instruments da8xx DDR2/mDDR driver" 204 depends on ARCH_DAVINCI_DA8XX || COMPILE_TEST 205 help 206 This driver is for the DDR2/mDDR Memory Controller present on 207 Texas Instruments da8xx SoCs. It's used to tweak various memory 208 controller configuration options. 209 210config PL353_SMC 211 tristate "ARM PL35X Static Memory Controller(SMC) driver" 212 default y if ARM 213 depends on ARM || COMPILE_TEST 214 depends on ARM_AMBA 215 help 216 This driver is for the ARM PL351/PL353 Static Memory 217 Controller(SMC) module. 218 219config RENESAS_RPCIF 220 tristate "Renesas RPC-IF driver" 221 depends on ARCH_RENESAS || COMPILE_TEST 222 select REGMAP_MMIO 223 select RESET_CONTROLLER 224 help 225 This supports Renesas R-Car Gen3 or RZ/G2 RPC-IF which provides 226 either SPI host or HyperFlash. You'll have to select individual 227 components under the corresponding menu. 228 229config STM32_FMC2_EBI 230 tristate "Support for FMC2 External Bus Interface on STM32MP SoCs" 231 depends on MACH_STM32MP157 || COMPILE_TEST 232 select MFD_SYSCON 233 help 234 Select this option to enable the STM32 FMC2 External Bus Interface 235 controller. This driver configures the transactions with external 236 devices (like SRAM, ethernet adapters, FPGAs, LCD displays, ...) on 237 SOCs containing the FMC2 External Bus Interface. 238 239source "drivers/memory/samsung/Kconfig" 240source "drivers/memory/tegra/Kconfig" 241 242endif 243