SDHCI_CTRL_PRESET_VAL_ENABLE
ret &= ~SDHCI_CTRL_PRESET_VAL_ENABLE;
val |= SDHCI_CTRL_PRESET_VAL_ENABLE | SDHCI_CTRL_EXEC_TUNING;
reg &= ~SDHCI_CTRL_PRESET_VAL_ENABLE;
ctrl |= SDHCI_CTRL_PRESET_VAL_ENABLE;
ctrl &= ~SDHCI_CTRL_PRESET_VAL_ENABLE;