SD_EMMC_CMD_CFG
HWRITE4(sc, SD_EMMC_CMD_CFG, cmd_cfg);
bus_space_barrier(sc->sc_iot, sc->sc_ioh, SD_EMMC_CMD_CFG,
SD_EMMC_CMD_RSP1 - SD_EMMC_CMD_CFG, BUS_SPACE_BARRIER_WRITE);