SDHCI_CTRL2_EXEC_TUNING
WR2(slot, SDHCI_HOST_CONTROL2, hostctrl2 | SDHCI_CTRL2_EXEC_TUNING);
if (!(hostctrl2 & SDHCI_CTRL2_EXEC_TUNING))
if ((hostctrl2 & (SDHCI_CTRL2_EXEC_TUNING |
WR2(slot, SDHCI_HOST_CONTROL2, hostctrl2 & ~(SDHCI_CTRL2_EXEC_TUNING |