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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: Johan Hovold <johan@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Johan Hovold 2017-11-09 18:07:17 +01:00 committed by Rob Herring
parent 1759f27027
commit f42ae7b054
1 changed files with 1 additions and 1 deletions
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2
Documentation/devicetree/bindings/usb/usb-device.txt
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@ -11,7 +11,7 @@ Required properties:
be used, but a device adhering to this binding may leave out all except be used, but a device adhering to this binding may leave out all except
for usbVID,PID. for usbVID,PID.
- reg: the port number which this device is connecting to, the range - reg: the port number which this device is connecting to, the range
is 1-31. is 1-255.
Example: Example: