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2015-05-20spi: sirf: add support for USP-based SPIQipan Li1-1/+2
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>
2015-01-12spi: sirf: add missed devicetree binding documentBarry Song1-0/+41
Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Qipan Li <Qipan.Li@csr.com> Signed-off-by: Mark Brown <broonie@kernel.org>