1Microsemi Ocelot SerDes muxing driver
2-------------------------------------
3
4On Microsemi Ocelot, there is a handful of registers in HSIO address
5space for setting up the SerDes to switch port muxing.
6
7A SerDes X can be "muxed" to work with switch port Y or Z for example.
8One specific SerDes can also be used as a PCIe interface.
9
10Hence, a SerDes represents an interface, be it an Ethernet or a PCIe one.
11
12There are two kinds of SerDes: SERDES1G supports 10/100Mbps in
13half/full-duplex and 1000Mbps in full-duplex mode while SERDES6G supports
1410/100Mbps in half/full-duplex and 1000/2500Mbps in full-duplex mode.
15
16Also, SERDES6G number (aka "macro") 0 is the only interface supporting
17QSGMII.
18
19This is a child of the HSIO syscon ("mscc,ocelot-hsio", see
20Documentation/devicetree/bindings/mips/mscc.txt) on the Microsemi Ocelot.
21
22Required properties:
23
24- compatible: should be "mscc,vsc7514-serdes"
25- #phy-cells : from the generic phy bindings, must be 2.
26	       The first number defines the input port to use for a given
27	       SerDes macro. The second defines the macro to use. They are
28	       defined in dt-bindings/phy/phy-ocelot-serdes.h
29
30Example:
31
32	serdes: serdes {
33		compatible = "mscc,vsc7514-serdes";
34		#phy-cells = <2>;
35	};
36
37	ethernet {
38		port1 {
39			phy-handle = <&phy_foo>;
40			/* Link SERDES1G_5 to port1 */
41			phys = <&serdes 1 SERDES1G_5>;
42		};
43	};
44