diff mbox series

[v2,1/2] dt-bindings: usb: usb251xb: add documentation for data lane swapping

Message ID 20190115115018.27143-1-m.felsch@pengutronix.de (mailing list archive)
State New, archived
Headers show
Series [v2,1/2] dt-bindings: usb: usb251xb: add documentation for data lane swapping | expand

Commit Message

Marco Felsch Jan. 15, 2019, 11:50 a.m. UTC
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 <m.felsch@pengutronix.de>
---
Changes:
v2:
 - rename property s/sw-dx-lanes-ports/swap-dx-lanes

 Documentation/devicetree/bindings/usb/usb251xb.txt | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Richard Leitner Jan. 16, 2019, 1:45 p.m. UTC | #1
On 15/01/2019 12:50, Marco Felsch wrote:
> 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 <m.felsch@pengutronix.de>
> ---
> Changes:
> v2:
>   - rename property s/sw-dx-lanes-ports/swap-dx-lanes
> 
>   Documentation/devicetree/bindings/usb/usb251xb.txt | 4 ++++
>   1 file changed, 4 insertions(+)
> 

looks good to me. Feel free to add

Reviewed-by: Richard Leitner <richard.leitner@skidata.com>
diff mbox series

Patch

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>;
 	};