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1Properties for the MDIO bus multiplexer/glue of Amlogic G12a SoC family.
2
3This is a special case of a MDIO bus multiplexer. It allows to choose between
4the internal mdio bus leading to the embedded 10/100 PHY or the external
5MDIO bus.
6
7Required properties in addition to the generic multiplexer properties:
8- compatible : amlogic,g12a-mdio-mux
9- reg: physical address and length of the multiplexer/glue registers
10- clocks: list of clock phandle, one for each entry clock-names.
11- clock-names: should contain the following:
12 * "pclk" : peripheral clock.
13 * "clkin0" : platform crytal
14 * "clkin1" : SoC 50MHz MPLL
15
16Example :
17
18mdio_mux: mdio-multiplexer@4c000 {
19 compatible = "amlogic,g12a-mdio-mux";
20 reg = <0x0 0x4c000 0x0 0xa4>;
21 clocks = <&clkc CLKID_ETH_PHY>,
22 <&xtal>,
23 <&clkc CLKID_MPLL_5OM>;
24 clock-names = "pclk", "clkin0", "clkin1";
25 mdio-parent-bus = <&mdio0>;
26 #address-cells = <1>;
27 #size-cells = <0>;
28
29 ext_mdio: mdio@0 {
30 reg = <0>;
31 #address-cells = <1>;
32 #size-cells = <0>;
33 };
34
35 int_mdio: mdio@1 {
36 reg = <1>;
37 #address-cells = <1>;
38 #size-cells = <0>;
39
40 internal_ephy: ethernet-phy@8 {
41 compatible = "ethernet-phy-id0180.3301",
42 "ethernet-phy-ieee802.3-c22";
43 interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
44 reg = <8>;
45 max-speed = <100>;
46 };
47 };
48};