GB_SPI_MODE_CPOL 839 include/linux/greybus/greybus_protocols.h #define GB_SPI_MODE_MODE_2 (GB_SPI_MODE_CPOL | 0) GB_SPI_MODE_CPOL 840 include/linux/greybus/greybus_protocols.h #define GB_SPI_MODE_MODE_3 (GB_SPI_MODE_CPOL | GB_SPI_MODE_CPHA)