Hello NXP team,
We're currently designing a hardware board based on the i.MX8QXP-MEK using a different Ethernet PHY controller. To do so, we're currently patching the kernel device tree (imx8x-mek.dtsi) &fec1 node:
&fec1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_fec1>;
phy-mode = "rgmii-txid";
phy-handle = <ðphy0>;
fsl,magic-packet;
nvmem-cells = <&fec_mac0>;
nvmem-cell-names = "mac-address";
rx-internal-delay-ps = <2000>;
status = "okay";
...
I'd like to include a custom *.dtsi file containing only the new PHY node & its pin definitions, instead of patching the kernel directly - this seems like the better approach.
I believe it is the approach used in a file like the "imx8qxp-mek-ov5640.dtsi", in a way "overriding" the original &fec1 node, and them updating the board's custom yocto machine layer.
Doing so, however, generates a conflict in the DTB compilation, as expected. Is there an example/guide on how to override phandles like the &fec1 in custom *.dtsi files?
