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2011-07-23Blackfin: spi-docs: further clarify GPIO CS behavior with various modesMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-08-06Blackfin: document SPI CS limitations with CPHA=0Michael Hennerich
With the Blackfin on-chip SPI peripheral, there is some logic tied to the CPHA bit whether the Slave Select Line is controlled by hardware (CPHA=0) or controlled by software (CPHA=1). However, the Linux SPI bus driver assumes that the Slave Select being asserted during the entire SPI transfer. So explain these small details for people who need certain SPI modes with standard CS behavior. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>