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