USBCFG_UCE
if (!(r & USBCFG_UCE)) /* UDC also off? */
__raw_writel(r | USBCFG_UCE | USBCFG_PPE, base + AU1200_USBCFG);
__raw_writel(r & ~USBCFG_UCE, base + AU1200_USBCFG);