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* SPI: add CSR SiRFprimaII SPI controller driverZhiwu Song2012-03-09
CSR SiRFprimaII has two SPIs (SPI0 and SPI1). Features: * Master and slave modes * 8-/12-/16-/32-bit data unit * 256 bytes receive data FIFO and 256 bytes transmit data FIFO * Multi-unit frame * Configurable SPI_EN (chip select pin) active state * Configurable SPI_CLK polarity * Configurable SPI_CLK phase * Configurable MSB/LSB first Signed-off-by: Zhiwu Song <zhiwu.song@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>