Commit f42ae7b0 authored by Johan Hovold's avatar Johan Hovold Committed by Rob Herring
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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: default avatarJohan Hovold <>
Signed-off-by: default avatarRob Herring <>
parent 1759f270
......@@ -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.
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