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>;
};
AT91 USB device controller
Required properties:
- compatible: Should be “atmel,at91rm9200-udc”
- reg: Address and length of the register set for the device
- interrupts: Should contain macb interrupt
Optional properties:
- atmel,vbus-gpio: If present, specifies a gpio that needs to be
activated for the bus to be powered.
usb1: gadget@fffa4000 {
compatible = “atmel,at91rm9200-udc”;
reg = <0xfffa4000 0x4000>;
interrupts = <10 4>;
atmel,vbus-gpio = <&pioC 5 0>;
};
