Commit f42ae7b0 authored Nov 09, 2017 by Johan Hovold Committed by Rob Herring Nov 16, 2017

dt-bindings: usb: fix reg-property port-number range



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 <johan@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>

parent 1759f270

Documentation/devicetree/bindings/usb/usb-device.txt

+1 −1

Original line number	Diff line number	Diff line
		@@ -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: