The mdio driver currently determines the smi bus and address from the
realtek,smi-address attribute of the phy. To better reflect the
topology and align with upstream, the phys should be relocated below
their associated bus. As an interim solution the following dts notation
is in focus.
mdio_ctrl: mdio-controller {
mdio_bus0: mdio-bus@0 {
reg = <0>;
phy0: ethernet-phy@0 {
reg = <0>;
compatible = "ethernet-phy-ieee802.3-c45";
realtek,smi-address = <8>;
};
&mdio_bus1 {
reg = <1>;
phy16: ethernet-phy@16 {
reg = <16>;
compatible = "ethernet-phy-ieee802.3-c45";
realtek,smi-address = <2>;
};
}
With this
- the phy reg property still denotes the port number
- the bus number can be derived from the parent bus node.
- the bus address is taken from realtek,smi-address
Refactor bus initialization so it can handle phy nodes below
multiple bus nodes.
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://github.com/openwrt/openwrt/pull/21438
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
3b73474f71