SDHCI_SIGNALING_180
if (!(host->flags & SDHCI_SIGNALING_180))
host->flags |= SDHCI_SIGNALING_180;
host->flags |= SDHCI_SIGNALING_180;
if (!(host->flags & SDHCI_SIGNALING_180))
host->flags |= SDHCI_SIGNALING_180;