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Diffstat (limited to 'Documentation/devicetree/bindings/usb/atmel-usb.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/atmel-usb.txt | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/atmel-usb.txt b/Documentation/devicetree/bindings/usb/atmel-usb.txt new file mode 100644 index 000000000..44e80153b --- /dev/null +++ b/Documentation/devicetree/bindings/usb/atmel-usb.txt @@ -0,0 +1,167 @@ +Atmel SOC USB controllers + +OHCI + +Required properties: + - compatible: Should be "atmel,at91rm9200-ohci" for USB controllers + used in host mode. + - reg: Address and length of the register set for the device + - interrupts: Should contain ohci interrupt + - clocks: Should reference the peripheral, host and system clocks + - clock-names: Should contain three strings + "ohci_clk" for the peripheral clock + "hclk" for the host clock + "uhpck" for the system clock + - 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@500000 { + compatible = "atmel,at91rm9200-ohci", "usb-ohci"; + reg = <0x00500000 0x100000>; + clocks = <&uhphs_clk>, <&uhphs_clk>, <&uhpck>; + clock-names = "ohci_clk", "hclk", "uhpck"; + interrupts = <20 4>; + num-ports = <2>; +}; + +EHCI + +Required properties: + - compatible: Should be "atmel,at91sam9g45-ehci" for USB controllers + used in host mode. + - reg: Address and length of the register set for the device + - interrupts: Should contain ehci interrupt + - clocks: Should reference the peripheral and the UTMI clocks + - clock-names: Should contain two strings + "ehci_clk" for the peripheral clock + "usb_clk" for the UTMI clock + +usb1: ehci@800000 { + compatible = "atmel,at91sam9g45-ehci", "usb-ehci"; + reg = <0x00800000 0x100000>; + interrupts = <22 4>; + clocks = <&utmi>, <&uhphs_clk>; + clock-names = "usb_clk", "ehci_clk"; +}; + +AT91 USB device controller + +Required properties: + - compatible: Should be one of the following + "atmel,at91rm9200-udc" + "atmel,at91sam9260-udc" + "atmel,at91sam9261-udc" + "atmel,at91sam9263-udc" + - reg: Address and length of the register set for the device + - interrupts: Should contain macb interrupt + - clocks: Should reference the peripheral and the AHB clocks + - clock-names: Should contain two strings + "pclk" for the peripheral clock + "hclk" for the AHB clock + +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>; + clocks = <&udc_clk>, <&udpck>; + clock-names = "pclk", "hclk"; + atmel,vbus-gpio = <&pioC 5 0>; +}; + +Atmel High-Speed USB device controller + +Required properties: + - compatible: Should be one of the following + "atmel,at91sam9rl-udc" + "atmel,at91sam9g45-udc" + "atmel,sama5d3-udc" + - reg: Address and length of the register set for the device + - interrupts: Should contain usba interrupt + - clocks: Should reference the peripheral and host clocks + - clock-names: Should contain two strings + "pclk" for the peripheral clock + "hclk" for the host clock + - ep childnode: To specify the number of endpoints and their properties. + +Optional properties: + - atmel,vbus-gpio: If present, specifies a gpio that allows to detect whether + vbus is present (USB is connected). + +Required child node properties: + - name: Name of the endpoint. + - reg: Num of the endpoint. + - atmel,fifo-size: Size of the fifo. + - atmel,nb-banks: Number of banks. + - atmel,can-dma: Boolean to specify if the endpoint support DMA. + - atmel,can-isoc: Boolean to specify if the endpoint support ISOC. + +usb2: gadget@fff78000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "atmel,at91sam9rl-udc"; + reg = <0x00600000 0x80000 + 0xfff78000 0x400>; + interrupts = <27 4 0>; + clocks = <&utmi>, <&udphs_clk>; + clock-names = "hclk", "pclk"; + atmel,vbus-gpio = <&pioB 19 0>; + + ep@0 { + reg = <0>; + atmel,fifo-size = <64>; + atmel,nb-banks = <1>; + }; + + ep@1 { + reg = <1>; + atmel,fifo-size = <1024>; + atmel,nb-banks = <2>; + atmel,can-dma; + atmel,can-isoc; + }; + + ep@2 { + reg = <2>; + atmel,fifo-size = <1024>; + atmel,nb-banks = <2>; + atmel,can-dma; + atmel,can-isoc; + }; + + ep@3 { + reg = <3>; + atmel,fifo-size = <1024>; + atmel,nb-banks = <3>; + atmel,can-dma; + }; + + ep@4 { + reg = <4>; + atmel,fifo-size = <1024>; + atmel,nb-banks = <3>; + atmel,can-dma; + }; + + ep@5 { + reg = <5>; + atmel,fifo-size = <1024>; + atmel,nb-banks = <3>; + atmel,can-dma; + atmel,can-isoc; + }; + + ep@6 { + reg = <6>; + atmel,fifo-size = <1024>; + atmel,nb-banks = <3>; + atmel,can-dma; + atmel,can-isoc; + }; +}; |