Commit 8d2c452c authored by Xu Yang's avatar Xu Yang Committed by Greg Kroah-Hartman
Browse files

dt-bindings: usb: ci-hdrc-usb2: add fsl,picophy-rise-fall-time-adjust property 



The fsl,picophy-rise-fall-time-adjust property can help to adjust the
rise/fall times of the high-speed transmitter waveform. The value can be
0~3. It has no unit. According to the description of USBNC_n_PHY_CFG1
register, the rise/fall time will be increased or decreased by a certain
percentage relative to design default time if a value is given to this
property.

Signed-off-by: default avatarXu Yang <xu.yang_2@nxp.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: default avatarPeter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20230627112126.1882666-2-xu.yang_2@nxp.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 36668515

Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml

+12 −0
Original line number Original line Diff line number Diff line
@@ -292,6 +292,18 @@ properties: 
    minimum: 0x0

    minimum: 0x0

    maximum: 0xf

    maximum: 0xf





  fsl,picophy-rise-fall-time-adjust:

    description:

      HS Transmitter Rise/Fall Time Adjustment. Adjust the rise/fall times

      of the high-speed transmitter waveform. It has no unit. The rise/fall

      time will be increased or decreased by a certain percentage relative

      to design default time. (0:-10%; 1:design default; 2:+15%; 3:+20%)

      Details can refer to TXRISETUNE0 bit of USBNC_n_PHY_CFG1.

    $ref: /schemas/types.yaml#/definitions/uint32

    minimum: 0

    maximum: 3

    default: 1



  usb-phy:

  usb-phy:

    description: phandle for the PHY device. Use "phys" instead.

    description: phandle for the PHY device. Use "phys" instead.

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

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