SDIO_SPEED_BSS_SHIFT
#define SDIO_SPEED_BSS_MASK (7<<SDIO_SPEED_BSS_SHIFT)
#define SDIO_SPEED_SDR12 (0<<SDIO_SPEED_BSS_SHIFT)
#define SDIO_SPEED_SDR25 (1<<SDIO_SPEED_BSS_SHIFT)
#define SDIO_SPEED_SDR50 (2<<SDIO_SPEED_BSS_SHIFT)
#define SDIO_SPEED_SDR104 (3<<SDIO_SPEED_BSS_SHIFT)
#define SDIO_SPEED_DDR50 (4<<SDIO_SPEED_BSS_SHIFT)