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* Blackfin: bfin_spi: add optional DMA supportMike Frysinger2010-10-02-0/+75
This moves the last piece from the old spi_flash driver to the new SPI framework -- optional DMA RX support. This typically cuts speeds by ~40% at the cost of additional ~300 bytes. Signed-off-by: Mike Frysinger <vapier@gentoo.org>