AT91_PMC_USBS
regmap_update_bits(usb->regmap, AT91_PMC_USB, AT91_PMC_USBS,
AT91_PMC_USBS);
regmap_update_bits(usb->regmap, AT91_PMC_USB, AT91_PMC_USBS, 0);
return usbr & AT91_PMC_USBS;