SDHCI_TEGRA_VENDOR_MISC_CTRL
val = sdhci_readl(host, SDHCI_TEGRA_VENDOR_MISC_CTRL);
sdhci_writel(host, val, SDHCI_TEGRA_VENDOR_MISC_CTRL);
misc_ctrl = sdhci_readl(host, SDHCI_TEGRA_VENDOR_MISC_CTRL);
sdhci_writel(host, misc_ctrl, SDHCI_TEGRA_VENDOR_MISC_CTRL);