UHS_SDR50_BUS_SPEED
[UHS_SDR50_BUS_SPEED] = "SDR50 ",
card->sd_bus_speed = UHS_SDR50_BUS_SPEED;
case UHS_SDR50_BUS_SPEED:
if ((card->sd_bus_speed != UHS_SDR50_BUS_SPEED) &&
card->sd_bus_speed = UHS_SDR50_BUS_SPEED;
#define SD_MODE_UHS_SDR50 (1 << UHS_SDR50_BUS_SPEED)