spi: Add support for Armada 3700 SPI Controller (5762ab71) · Commits · 戴 / test

Marvell Armada 3700 SoC comprises an SPI Controller. This Controller supports up to 4 SPI slave devices, with dedicated chip selects,supports SPI mode 0/1/2 and 3, CPIO or Fifo mode with DMA transfers and different SPI transfer mode (Single, Dual or Quad). This commit adds basic driver support for FIFO mode. In this mode, dedicated registers are used to store the instruction, the address, the read mode and the data. Write and Read FIFO are used to store the outcoming or incoming data. The data FIFOs are accessible via DMA or by the CPU. Only the CPU is supported for now. Signed-off-by:

Romain Perier <romain.perier@free-electrons.com> Tested-by:

Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by:

Mark Brown <broonie@kernel.org>

drivers/spi/Kconfig

+7 −0

Original line number	Diff line number	Diff line
		@@ -67,6 +67,13 @@ config SPI_ATH79
		This enables support for the SPI controller present on the
		Atheros AR71XX/AR724X/AR913X SoCs.

		config SPI_ARMADA_3700
		tristate "Marvell Armada 3700 SPI Controller"
		depends on (ARCH_MVEBU && OF) \|\| COMPILE_TEST
		help
		This enables support for the SPI controller present on the
		Marvell Armada 3700 SoCs.

		config SPI_ATMEL
		tristate "Atmel SPI Controller"
		depends on HAS_DMA

drivers/spi/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -12,6 +12,7 @@ obj-$(CONFIG_SPI_LOOPBACK_TEST) += spi-loopback-test.o

		# SPI master controller drivers (bus)
		obj-$(CONFIG_SPI_ALTERA) += spi-altera.o
		obj-$(CONFIG_SPI_ARMADA_3700) += spi-armada-3700.o
		obj-$(CONFIG_SPI_ATMEL) += spi-atmel.o
		obj-$(CONFIG_SPI_ATH79) += spi-ath79.o
		obj-$(CONFIG_SPI_AU1550) += spi-au1550.o

drivers/spi/spi-armada-3700.c

0 → 100644

+923 −0

File added.

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