PHY_CNFG_R
val = sdhci_readl(host, PHY_CNFG_R);
sdhci_writel(host, val, PHY_CNFG_R);
val = sdhci_readl(host, PHY_CNFG_R);
sdhci_writel(host, val, PHY_CNFG_R);
sdhci_writel(host, drv | ~PHY_CNFG_RSTN_DEASSERT, PHY_CNFG_R);
sdhci_writel(host, drv | PHY_CNFG_RSTN_DEASSERT, PHY_CNFG_R);
sdhci_writel(host, val, PHY_CNFG_R);