From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Marco Felsch Subject: [PATCH v3 1/2] dt-bindings: usb: usb251xb: add documentation for data lane swapping Date: Wed, 16 Jan 2019 15:20:36 +0100 Message-Id: <20190116142037.10086-1-m.felsch@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: richard.leitner@skidata.com, robh@kernel.org, fancer.lancer@gmail.com Cc: devicetree@vger.kernel.org, linux-usb@vger.kernel.org, kernel@pengutronix.de, gregkh@linuxfoundation.org List-ID: 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 --- Changes: v3: - no changes v2: - rename property s/sw-dx-lanes-ports/swap-dx-lanes Documentation/devicetree/bindings/usb/usb251xb.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/usb251xb.txt b/Documentation/devicetree/bindings/usb/usb251xb.txt index 168ff819e827..17915f64b8ee 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>; }; -- 2.20.1