spi/spi_bfin_sport: new driver for a SPI bus via the Blackfin SPORT peripheral (9c3e7375) · Commits · 戴 / test

The Blackfin SPORT peripheral is a pretty flexible device. With enough coaching, we can make it generate SPI compatible waveforms. This is desirable as the SPORT can run at much higher clock frequencies than the dedicated on-chip SPI peripheral, and it can do full duplex DMA. It also opens up the possibility of multiple SPI buses in case someone wants to dedicate a whole bus to a specific part that does not play well with others. Signed-off-by:

Cliff Cai <cliff.cai@analog.com> Signed-off-by:

Bryan Wu <cooloney@kernel.org> Signed-off-by:

Michael Hennerich <michael.hennerich@analog.com> Signed-off-by:

Mike Frysinger <vapier@gentoo.org> Signed-off-by:

Grant Likely <grant.likely@secretlab.ca>

drivers/spi/Kconfig

+9 −0

Original line number	Diff line number	Diff line
		@@ -80,6 +80,15 @@ config SPI_BFIN
		help
		This is the SPI controller master driver for Blackfin 5xx processor.

		config SPI_BFIN_SPORT
		tristate "SPI bus via Blackfin SPORT"
		depends on BLACKFIN
		help
		Enable support for a SPI bus via the Blackfin SPORT peripheral.

		This driver can also be built as a module. If so, the module
		will be called spi_bfin_sport.

		config SPI_AU1550
		tristate "Au1550/Au12x0 SPI Controller"
		depends on (SOC_AU1550 \|\| SOC_AU1200) && EXPERIMENTAL

drivers/spi/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -13,6 +13,7 @@ obj-$(CONFIG_SPI_ALTERA) += spi_altera.o
		obj-$(CONFIG_SPI_ATMEL) += atmel_spi.o
		obj-$(CONFIG_SPI_ATH79) += ath79_spi.o
		obj-$(CONFIG_SPI_BFIN) += spi_bfin5xx.o
		obj-$(CONFIG_SPI_BFIN_SPORT) += spi_bfin_sport.o
		obj-$(CONFIG_SPI_BITBANG) += spi_bitbang.o
		obj-$(CONFIG_SPI_AU1550) += au1550_spi.o
		obj-$(CONFIG_SPI_BUTTERFLY) += spi_butterfly.o

drivers/spi/spi_bfin_sport.c

0 → 100644

+952 −0

File added.

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