On 08/09/2022 17:32, Jerry.Ray@xxxxxxxxxxxxx wrote: >>>>>>> + chosen { >>>>>>> + stdout-path = "serial0:115200n8"; >>>>>>> + }; >>>>>>> + >>>>>>> + clocks { >>>>>>> + slow_xtal { >>>>>> >>>>>> No underscores in node names. Override by label. >>>>>> > > I am not at liberty to change this as both node name and label are defined in the sama5d3.dtsi source file. > If there is a way to override the label, please share the syntax as nothing I have tried is working. Override *by* label. Not the label. Just like all things are being customized. &slow_xtal { ... }; Best regards, Krzysztof