SDHCI_FSL_CLK_SDCLKEN
if (RD4(sc, SDHCI_FSL_SYS_CTRL) & SDHCI_FSL_CLK_SDCLKEN)
WR4(sc, SDHCI_CLOCK_CONTROL, val32 & ~SDHCI_FSL_CLK_SDCLKEN);
val32 |= SDHCI_FSL_CLK_IPGEN | SDHCI_FSL_CLK_SDCLKEN;
WR4(sc, SDHCI_CLOCK_CONTROL, val & ~SDHCI_FSL_CLK_SDCLKEN);