memory: add Atmel EBI (External Bus Interface) driver (6a4ec4cd) · Commits · 戴 / test

The EBI (External Bus Interface) is used to access external peripherals (NOR, SRAM, NAND, and other specific devices like ethernet controllers). Each device is assigned a CS line and an address range and can have its own configuration (timings, access mode, bus width, ...). This driver provides a generic DT binding to configure a device according to its requirements. For specific device controllers (like the NAND one) the SMC timings should be configured by the controller driver through the matrix and smc syscon regmaps. Signed-off-by:

Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:

Alexandre Belloni <alexandre.belloni@free-electrons.com>

drivers/memory/Kconfig

+11 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,17 @@ config ATMEL_SDRAMC
		Starting with the at91sam9g45, this controller supports SDR, DDR and
		LP-DDR memories.

		config ATMEL_EBI
		bool "Atmel EBI driver"
		default y
		depends on ARCH_AT91 && OF
		select MFD_SYSCON
		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 TI_AEMIF
		tristate "Texas Instruments AEMIF driver"
		depends on (ARCH_DAVINCI \|\| ARCH_KEYSTONE) && OF

drivers/memory/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -7,6 +7,7 @@ obj-$(CONFIG_OF) += of_memory.o
		endif
		obj-$(CONFIG_ARM_PL172_MPMC) += pl172.o
		obj-$(CONFIG_ATMEL_SDRAMC) += atmel-sdramc.o
		obj-$(CONFIG_ATMEL_EBI) += atmel-ebi.o
		obj-$(CONFIG_TI_AEMIF) += ti-aemif.o
		obj-$(CONFIG_TI_EMIF) += emif.o
		obj-$(CONFIG_OMAP_GPMC) += omap-gpmc.o

drivers/memory/atmel-ebi.c

0 → 100644

+771 −0

File added.

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