39 lines
1.1 KiB
Plaintext
39 lines
1.1 KiB
Plaintext
Generic USB Device Properties
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Usually, we only use device tree for hard wired USB device.
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The reference binding doc is from:
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http://www.devicetree.org/open-firmware/bindings/usb/usb-1_0.ps
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Required properties:
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- compatible: "usbVID,PID", where VID is the vendor id and PID the product id.
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The textual representation of VID and PID shall be in lower case hexadecimal
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with leading zeroes suppressed. The other compatible strings from the above
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standard binding could also be used, but a device adhering to this binding
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may leave out all except for "usbVID,PID".
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- reg: the number of the USB hub port or the USB host-controller port to which
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this device is attached. The range is 1-255.
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Required properties for hub nodes with device nodes:
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- #address-cells: shall be 1
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- #size-cells: shall be 0
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Required properties for host-controller nodes with device nodes:
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- #address-cells: shall be 1
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- #size-cells: shall be 0
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Example:
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&usb1 { /* host controller */
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#address-cells = <1>;
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#size-cells = <0>;
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hub@1 { /* hub connected to port 1 */
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compatible = "usb5e3,608";
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reg = <1>;
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};
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};
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