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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- reg: Address and length of the register set for the device
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- interrupts: Should contain ohci interrupt
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- clocks: Should reference the peripheral, host and system clocks
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- clock-names: Should contain three strings
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"ohci_clk" for the peripheral clock
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"hclk" for the host clock
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"uhpck" for the system clock
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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@500000 {
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compatible = "atmel,at91rm9200-ohci", "usb-ohci";
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reg = <0x00500000 0x100000>;
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clocks = <&uhphs_clk>, <&uhphs_clk>, <&uhpck>;
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clock-names = "ohci_clk", "hclk", "uhpck";
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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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- reg: Address and length of the register set for the device
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- interrupts: Should contain ehci interrupt
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- clocks: Should reference the peripheral and the UTMI clocks
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- clock-names: Should contain two strings
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"ehci_clk" for the peripheral clock
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"usb_clk" for the UTMI clock
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usb1: ehci@800000 {
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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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clocks = <&utmi>, <&uhphs_clk>;
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clock-names = "usb_clk", "ehci_clk";
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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 one of the following
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"atmel,at91rm9200-udc"
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"atmel,at91sam9260-udc"
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"atmel,at91sam9261-udc"
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"atmel,at91sam9263-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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- clocks: Should reference the peripheral and the AHB clocks
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- clock-names: Should contain two strings
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"pclk" for the peripheral clock
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"hclk" for the AHB clock
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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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clocks = <&udc_clk>, <&udpck>;
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clock-names = "pclk", "hclk";
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atmel,vbus-gpio = <&pioC 5 0>;
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};
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Atmel High-Speed USB device controller
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Required properties:
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- compatible: Should be one of the following
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"atmel,at91sam9rl-udc"
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"atmel,at91sam9g45-udc"
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"atmel,sama5d3-udc"
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"microchip,sam9x60-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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- clocks: Should reference the peripheral and host clocks
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- clock-names: Should contain two strings
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"pclk" for the peripheral clock
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"hclk" for the host clock
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Deprecated property:
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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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Deprecated 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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clocks = <&utmi>, <&udphs_clk>;
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clock-names = "hclk", "pclk";
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atmel,vbus-gpio = <&pioB 19 0>;
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};
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