SDHCI_CTRL_V4_MODE
if (!((ctrl2 & SDHCI_CTRL_V4_MODE) &&
sdhci_writew(host, SDHCI_CTRL_V4_MODE, SDHCI_HOST_CONTROL2);
if (ctrl2 & SDHCI_CTRL_V4_MODE)
ctrl2 |= SDHCI_CTRL_V4_MODE;