The USB hub port-number range for USB 2.0 is 1-255 and not 1-31 which reflects an arbitrary limit set by the current Linux implementation.
Note that for USB 3.1 hubs the valid range is 1-15. Increase the documented valid range in the binding to 255, which is the maximum allowed by the specifications. Signed-off-by: Johan Hovold <jo...@kernel.org> --- Documentation/devicetree/bindings/usb/usb-device.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/usb/usb-device.txt b/Documentation/devicetree/bindings/usb/usb-device.txt index 4df7e22e0084..b749fb9f2674 100644 --- a/Documentation/devicetree/bindings/usb/usb-device.txt +++ b/Documentation/devicetree/bindings/usb/usb-device.txt @@ -11,7 +11,7 @@ Required properties: be used, but a device adhering to this binding may leave out all except for usbVID,PID. - reg: the port number which this device is connecting to, the range - is 1-31. + is 1-255. Example: -- 2.15.0 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
