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usb: usb251xb: Add US lanes inversion dts-bindings

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Since a separate US ports lanes polarity inversion property is going to
be available the bindings doc-file should be updated with information
about swap-us-lanes bool property, which will be responsible for it.

Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Acked-by: Richard Leitner <richard.leitner@skidata.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Serge Semin 2019-04-25 00:12:05 +03:00 committed by Greg Kroah-Hartman
parent ce64cea47c
commit 3342ce35a1
1 changed files with 4 additions and 2 deletions
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6
Documentation/devicetree/bindings/usb/usb251xb.txt
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@ -64,8 +64,10 @@ 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.
- swap-dx-lanes : Specifies the downstream ports which will swap the
differential-pair (D+/D-), default is not-swapped.
- swap-us-lanes : Selects the upstream port differential-pair (D+/D-)
swapping (boolean, default is not-swapped)
Examples:
usb2512b@2c {