Messages in this thread Patch in this message | | | From | Johan Hovold <> | Subject | [PATCH 2/8] dt-bindings: usb: fix reg-property port-number range | Date | Thu, 9 Nov 2017 18:07:17 +0100 |
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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> --- 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
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