Commit 6f84a28d authored by Serge Semin's avatar Serge Semin Committed by Greg Kroah-Hartman
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dt-bindings: usb: dwc3: Add Tx De-emphasis constraints 



In accordance with the driver comments the PIPE3 de-emphasis can be tuned
to be either -6dB, -2.5dB or disabled. Let's add the de-emphasis
property constraints so the DT schema would make sure the controller DT
node is equipped with correct value.

Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarSerge Semin <Sergey.Semin@baikalelectronics.ru>
Link: https://lore.kernel.org/r/20201210090944.16283-14-Sergey.Semin@baikalelectronics.ru


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f82dc557

Documentation/devicetree/bindings/usb/snps,dwc3.yaml

+4 −0
Original line number Diff line number Diff line
@@ -156,6 +156,10 @@ properties: 
      The value driven to the PHY is controlled by the LTSSM during USB3

      Compliance mode.

    $ref: /schemas/types.yaml#/definitions/uint8

    enum:

      - 0 # -6dB de-emphasis

      - 1 # -3.5dB de-emphasis

      - 2 # No de-emphasis



  snps,dis_u3_susphy_quirk:

    description: When set core will disable USB3 suspend phy