SM501_GATE_USB_HOST
sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 1);
sm501_unit_power(pdev->dev.parent, SM501_GATE_USB_HOST, 0);
sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 0);
sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 1);