FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/phy/phy-ocelot-serdes.txt

     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.
    
    This is a child of the HSIO syscon ("mscc,ocelot-hsio", see
    Documentation/devicetree/bindings/mips/mscc.txt) on the Microsemi Ocelot.
    
    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
    
    Example:
    
            serdes: serdes {
                    compatible = "mscc,vsc7514-serdes";
                    #phy-cells = <2>;
            };
    
            ethernet {
                    port1 {
                            phy-handle = <&phy_foo>;
                            /* Link SERDES1G_5 to port1 */
                            phys = <&serdes 1 SERDES1G_5>;
                    };
            };

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