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