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    Subject[PATCH net-next v4 4/4] dt-bindings: net: freescale: enetc: Add connection bindings for ENETC ethernet nodes
    Date
    Define connection bindings (external PHY connections and internal links)
    for the ENETC on-chip ethernet controllers.

    Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
    ---
    v3 - added this patch to the set
    v4 - documented strictly the enetc node bindings, changed node type
    from "pci" to "ethernet" and added compatible string (Rob H.)

    .../devicetree/bindings/net/fsl-enetc.txt | 69 ++++++++++++++++++++++
    1 file changed, 69 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/net/fsl-enetc.txt

    diff --git a/Documentation/devicetree/bindings/net/fsl-enetc.txt b/Documentation/devicetree/bindings/net/fsl-enetc.txt
    new file mode 100644
    index 0000000..c812e25
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/net/fsl-enetc.txt
    @@ -0,0 +1,69 @@
    +* ENETC ethernet device tree bindings
    +
    +Depending on board design and ENETC port type (internal or
    +external) there are two supported link modes specified by
    +below device tree bindings.
    +
    +Required properties:
    +
    +- reg : Specifies PCIe Device Number and Function
    + Number of the ENETC endpoint device, according
    + to parent node bindings.
    +- compatible : Should be "fsl,enetc".
    +
    +1) The ENETC external port is connected to a MDIO configurable phy:
    +
    +In this case, the ENETC node should include a "mdio" sub-node
    +that in turn should contain the "ethernet-phy" node describing the
    +external phy. Below properties are required, their bindings
    +already defined in ethernet.txt or phy.txt, under
    +Documentation/devicetree/bindings/net/*.
    +
    +Required:
    +
    +- phy-handle : Phandle to a PHY on the MDIO bus.
    + Defined in ethernet.txt.
    +
    +- phy-connection-type : Defined in ethernet.txt.
    +
    +- mdio : "mdio" node, defined in mdio.txt.
    +
    +- ethernet-phy : "ethernet-phy" node, defined in phy.txt.
    +
    +Example:
    +
    + ethernet@0,0 {
    + compatible = "fsl,enetc";
    + reg = <0x000000 0 0 0 0>;
    + phy-handle = <&sgmii_phy0>;
    + phy-connection-type = "sgmii";
    +
    + mdio {
    + #address-cells = <1>;
    + #size-cells = <0>;
    + sgmii_phy0: ethernet-phy@2 {
    + reg = <0x2>;
    + };
    + };
    + };
    +
    +2) The ENETC port is an internal port or has a fixed-link external
    +connection:
    +
    +In this case, the ENETC port node defines a fixed link connection,
    +as specified by "fixed-link.txt", under
    +Documentation/devicetree/bindings/net/*.
    +
    +Required:
    +
    +- fixed-link : "fixed-link" node, defined in "fixed-link.txt".
    +
    +Example:
    + ethernet@0,2 {
    + compatible = "fsl,enetc";
    + reg = <0x000200 0 0 0 0>;
    + fixed-link {
    + speed = <1000>;
    + full-duplex;
    + };
    + };
    --
    2.7.4
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