Commit e3fb57c8 authored May 19, 2015 by Qipan Li Committed by Mark Brown May 20, 2015

spi: sirf: add support for USP-based SPI



USP is a general purpose serial port in SiRFSoC, which can work as SPI.
the most data flow of USP and pure SPI is same with main differences
in registers layout.
this patch moves registers layout to private data, and use flags to
differentiate other minor differences between prima2-spi, prima2-usp
and atlas7-usp for hardware configuration.

Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent a34bcbed

Documentation/devicetree/bindings/spi/spi-sirf.txt

+2 −1

Original line number	Diff line number	Diff line
		* CSR SiRFprimaII Serial Peripheral Interface

		Required properties:
		- compatible : Should be "sirf,prima2-spi"
		- compatible : Should be "sirf,prima2-spi", "sirf,prima2-usp"
		or "sirf,atlas7-usp"
		- reg : Offset and length of the register set for the device
		- interrupts : Should contain SPI interrupt
		- resets: phandle to the reset controller asserting this device in

drivers/spi/spi-sirf.c

+584 −208

File changed.

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