2024-09-09 08:52:07 +00:00
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Atmel SOC USB controllers
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OHCI
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Required properties:
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- compatible: Should be "atmel,at91rm9200-ohci" for USB controllers
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used in host mode.
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- num-ports: Number of ports.
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- atmel,vbus-gpio: If present, specifies a gpio that needs to be
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activated for the bus to be powered.
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- atmel,oc-gpio: If present, specifies a gpio that needs to be
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activated for the overcurrent detection.
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usb0: ohci@00500000 {
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compatible = "atmel,at91rm9200-ohci", "usb-ohci";
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reg = <0x00500000 0x100000>;
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interrupts = <20 4>;
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num-ports = <2>;
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};
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EHCI
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Required properties:
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- compatible: Should be "atmel,at91sam9g45-ehci" for USB controllers
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used in host mode.
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usb1: ehci@00800000 {
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compatible = "atmel,at91sam9g45-ehci", "usb-ehci";
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reg = <0x00800000 0x100000>;
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interrupts = <22 4>;
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};
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AT91 USB device controller
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Required properties:
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- compatible: Should be "atmel,at91rm9200-udc"
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- reg: Address and length of the register set for the device
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- interrupts: Should contain macb interrupt
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Optional properties:
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- atmel,vbus-gpio: If present, specifies a gpio that needs to be
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activated for the bus to be powered.
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usb1: gadget@fffa4000 {
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compatible = "atmel,at91rm9200-udc";
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reg = <0xfffa4000 0x4000>;
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interrupts = <10 4>;
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atmel,vbus-gpio = <&pioC 5 0>;
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};
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2024-09-09 08:57:42 +00:00
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Atmel High-Speed USB device controller
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Required properties:
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- compatible: Should be "atmel,at91sam9rl-udc"
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- reg: Address and length of the register set for the device
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- interrupts: Should contain usba interrupt
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- ep childnode: To specify the number of endpoints and their properties.
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Optional properties:
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- atmel,vbus-gpio: If present, specifies a gpio that allows to detect whether
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vbus is present (USB is connected).
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Required child node properties:
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- name: Name of the endpoint.
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- reg: Num of the endpoint.
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- atmel,fifo-size: Size of the fifo.
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- atmel,nb-banks: Number of banks.
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- atmel,can-dma: Boolean to specify if the endpoint support DMA.
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- atmel,can-isoc: Boolean to specify if the endpoint support ISOC.
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usb2: gadget@fff78000 {
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "atmel,at91sam9rl-udc";
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reg = <0x00600000 0x80000
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0xfff78000 0x400>;
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interrupts = <27 4 0>;
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atmel,vbus-gpio = <&pioB 19 0>;
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ep0 {
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reg = <0>;
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atmel,fifo-size = <64>;
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atmel,nb-banks = <1>;
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};
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ep1 {
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reg = <1>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <2>;
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atmel,can-dma;
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atmel,can-isoc;
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};
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ep2 {
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reg = <2>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <2>;
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atmel,can-dma;
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atmel,can-isoc;
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};
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ep3 {
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reg = <3>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <3>;
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atmel,can-dma;
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};
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ep4 {
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reg = <4>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <3>;
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atmel,can-dma;
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};
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ep5 {
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reg = <5>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <3>;
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atmel,can-dma;
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atmel,can-isoc;
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};
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ep6 {
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reg = <6>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <3>;
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atmel,can-dma;
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atmel,can-isoc;
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};
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};
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