SDHCI_FSL_DLLCFG0
reg = RD4(sc, SDHCI_FSL_DLLCFG0);
WR4(sc, SDHCI_FSL_DLLCFG0, reg);
reg = RD4(sc, SDHCI_FSL_DLLCFG0);
WR4(sc, SDHCI_FSL_DLLCFG0, reg);
WR4(sc, SDHCI_FSL_DLLCFG0, reg);