USB_QMU_RQHIAR
regs[3].offset = in ? USB_QMU_TQHIAR(epnum) : USB_QMU_RQHIAR(epnum);
rqhiar = mtu3_readl(mbase, USB_QMU_RQHIAR(epnum));
mtu3_writel(mbase, USB_QMU_RQHIAR(epnum), rqhiar);
rxhiar = mtu3_readl(mbase, USB_QMU_RQHIAR(epnum));