From: Marco Felsch Date: Wed, 16 Jan 2019 14:20:36 +0000 (+0100) Subject: dt-bindings: usb: usb251xb: add documentation for data lane swapping X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5d6353fe6984e7c3c41dae47aa38ee9c8ddaebd8;p=linux.git dt-bindings: usb: usb251xb: add documentation for data lane swapping Add optional binding to allow USB differential-pair (D+/D-) data lane swapping. The swapping can be specified for each port separately, default is no swapping. Signed-off-by: Marco Felsch Reviewed-by: Richard Leitner Reviewed-by: Rob Herring Signed-off-by: Greg Kroah-Hartman --- diff --git a/Documentation/devicetree/bindings/usb/usb251xb.txt b/Documentation/devicetree/bindings/usb/usb251xb.txt index 168ff819e8273..17915f64b8ee3 100644 --- a/Documentation/devicetree/bindings/usb/usb251xb.txt +++ b/Documentation/devicetree/bindings/usb/usb251xb.txt @@ -64,6 +64,8 @@ Optional properties : - power-on-time-ms : Specifies the time it takes from the time the host initiates the power-on sequence to a port until the port has adequate power. The value is given in ms in a 0 - 510 range (default is 100ms). + - swap-dx-lanes : Specifies the ports which will swap the differential-pair + (D+/D-), default is not-swapped. Examples: usb2512b@2c { @@ -81,4 +83,6 @@ Examples: manufacturer = "Foo"; product = "Foo-Bar"; serial = "1234567890A"; + /* correct misplaced usb connectors on port 1,2 */ + swap-dx-lanes = <1 2>; };