On Fri, Sep 14, 2018 at 10:16:05AM +0200, Quentin Schulz wrote:
> Signed-off-by: Quentin Schulz <quentin.schulz@xxxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/phy/phy-ocelot-serdes.txt | 40 +++++++-
> 1 file changed, 40 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/phy-ocelot-serdes.txt
>
> diff --git a/Documentation/devicetree/bindings/phy/phy-ocelot-serdes.txt b/Documentation/devicetree/bindings/phy/phy-ocelot-serdes.txt
> new file mode 100644
> index 0000000..2a88cc3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-ocelot-serdes.txt
> @@ -0,0 +1,40 @@
> +Microsemi Ocelot SerDes muxing driver
> +-------------------------------------
> +
> +On Microsemi Ocelot, there is a handful of registers in HSIO address
> +space for setting up the SerDes to switch port muxing.
> +
> +A SerDes X can be "muxed" to work with switch port Y or Z for example.
> +One specific SerDes can also be used as a PCIe interface.
> +
> +Hence, a SerDes represents an interface, be it an Ethernet or a PCIe one.
> +
> +There are two kinds of SerDes: SERDES1G supports 10/100Mbps in
> +half/full-duplex and 1000Mbps in full-duplex mode while SERDES6G supports
> +10/100Mbps in half/full-duplex and 1000/2500Mbps in full-duplex mode.
> +
> +Also, SERDES6G number (aka "macro") 0 is the only interface supporting
> +QSGMII.
> +
> +Required properties:
> +
> +- compatible: should be "mscc,vsc7514-serdes"
> +- #phy-cells : from the generic phy bindings, must be 2.
> + The first number defines the input port to use for a given
> + SerDes macro. The second defines the macro to use. They are
> + defined in dt-bindings/phy/phy-ocelot-serdes.h
You need to define what this is a child of.
> +
> +Example:
> +
> + serdes: serdes {
> + compatible = "mscc,vsc7514-serdes";
> + #phy-cells = <2>;
However, if there are no other resources associated with this, then you
don't even need this child node. The parent can be a phy provider and
provider of other functions too.
> + };
> +
> + ethernet {
> + port1 {
> + phy-handle = <&phy_foo>;
> + /* Link SERDES1G_5 to port1 */
> + phys = <&serdes 1 SERDES1G_5>;
> + };
> + };
> --
> git-series 0.9.1
