SDMMC_CTRL
reg = READ4(sc, SDMMC_CTRL);
WRITE4(sc, SDMMC_CTRL, reg);
if (!(READ4(sc, SDMMC_CTRL) & reset_bits))
WRITE4(sc, SDMMC_CTRL, SDMMC_CTRL_INT_ENABLE);
reg = READ4(sc, SDMMC_CTRL);
WRITE4(sc, SDMMC_CTRL, reg);
reg = READ4(sc, SDMMC_CTRL);
WRITE4(sc, SDMMC_CTRL, reg);