Atmel SOC USB controllers OHCI Required properties: - compatible: Should be "atmel,at91rm9200-ohci" for USB controllers used in host mode. - num-ports: Number of ports. - atmel,vbus-gpio: If present, specifies a gpio that needs to be activated for the bus to be powered. - atmel,oc-gpio: If present, specifies a gpio that needs to be activated for the overcurrent detection. usb0: ohci@00500000 { compatible = "atmel,at91rm9200-ohci", "usb-ohci"; reg = <0x00500000 0x100000>; interrupts = <20 4>; num-ports = <2>; }; EHCI Required properties: - compatible: Should be "atmel,at91sam9g45-ehci" for USB controllers used in host mode. usb1: ehci@00800000 { compatible = "atmel,at91sam9g45-ehci", "usb-ehci"; reg = <0x00800000 0x100000>; interrupts = <22 4>; };