HW_USBPHY_PWD
writel(0, base + HW_USBPHY_PWD);
writel(0xffffffff, phy->io_priv + HW_USBPHY_PWD);
writel(0xffbfffff, x->io_priv + HW_USBPHY_PWD);
writel(0xffffffff, x->io_priv + HW_USBPHY_PWD);
writel(0, x->io_priv + HW_USBPHY_PWD);