Commit 6b5903f5 authored by Martin Blumenstingl's avatar Martin Blumenstingl Committed by Jakub Kicinski
Browse files

dt-bindings: net: dwmac-meson: use picoseconds for the RGMII RX delay 



Amlogic Meson G12A, G12B and SM1 SoCs have a more advanced RGMII RX
delay register which allows picoseconds precision. Deprecate the old
"amlogic,rx-delay-ns" in favour of the generic "rx-internal-delay-ps"
property.

For older SoCs the only known supported values were 0ns and 2ns. The new
SoCs have support for RGMII RX delays between 0ps and 3000ps in 200ps
steps.

Don't carry over the description for the "rx-internal-delay-ps" property
and inherit that from ethernet-controller.yaml instead.

Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 85b277de

Documentation/devicetree/bindings/net/amlogic,meson-dwmac.yaml

+49 −6
Original line number Diff line number Diff line
@@ -74,17 +74,60 @@ allOf: 
            Any configuration is ignored when the phy-mode is set to "rmii".



        amlogic,rx-delay-ns:

          deprecated: true

          enum:

            - 0

            - 2

          default: 0

          description:

            The internal RGMII RX clock delay (provided by this IP block) in

            nanoseconds. When phy-mode is set to "rgmii" then the RX delay

            should be explicitly configured. When the phy-mode is set to

            either "rgmii-id" or "rgmii-rxid" the RX clock delay is already

            provided by the PHY. Any configuration is ignored when the

            phy-mode is set to "rmii".

            The internal RGMII RX clock delay in nanoseconds. Deprecated, use

            rx-internal-delay-ps instead.



        rx-internal-delay-ps:

          default: 0



  - if:

      properties:

        compatible:

          contains:

            enum:

              - amlogic,meson8b-dwmac

              - amlogic,meson8m2-dwmac

              - amlogic,meson-gxbb-dwmac

              - amlogic,meson-axg-dwmac

    then:

      properties:

        rx-internal-delay-ps:

          enum:

            - 0

            - 2000



  - if:

      properties:

        compatible:

          contains:

            enum:

              - amlogic,meson-g12a-dwmac

    then:

      properties:

        rx-internal-delay-ps:

          enum:

            - 0

            - 200

            - 400

            - 600

            - 800

            - 1000

            - 1200

            - 1400

            - 1600

            - 1800

            - 2000

            - 2200

            - 2400

            - 2600

            - 2800

            - 3000



properties:

  compatible: