USB2PHY_SIG
set32(atcphy->regs.usb2phy + USB2PHY_SIG,
set32(atcphy->regs.usb2phy + USB2PHY_SIG, USB2PHY_SIG_HOST);
clear32(atcphy->regs.usb2phy + USB2PHY_SIG, USB2PHY_SIG_HOST);