SD_EMMC_ADJUST
adjust = HREAD4(sc, SD_EMMC_ADJUST);
HWRITE4(sc, SD_EMMC_ADJUST, adjust);
HWRITE4(sc, SD_EMMC_ADJUST, adjust);
adjust = HREAD4(sc, SD_EMMC_ADJUST);
HWRITE4(sc, SD_EMMC_ADJUST, adjust);