GB_SPI_MODE_CPHA  838 include/linux/greybus/greybus_protocols.h #define GB_SPI_MODE_MODE_1		(0 | GB_SPI_MODE_CPHA)
GB_SPI_MODE_CPHA  840 include/linux/greybus/greybus_protocols.h #define GB_SPI_MODE_MODE_3		(GB_SPI_MODE_CPOL | GB_SPI_MODE_CPHA)