SDHCI_SPEC_VER_SHIFT
static const u16 version = SDHCI_SPEC_400 << SDHCI_SPEC_VER_SHIFT;
((host_version & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT),
host->version = (v & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT;