Hi Rob > I'd expect the top level node to be the card node that knows how to find > all the components. The graph should reflect the data flow. For example, > the data goes to audio DSP to I2S host to codec to amp. Do you mean, is this OK for OF graph ? in driver point of view, "I2S" is sound card here. I2S { port { i2s-dsp: endpoint { remote-endpoint = <&dsp>; } i2s-codec: endpoint { remote-endpoint = <&codec>; } } } DSP { port { dsp: endpoint { remote-endpoint = <&i2s-dsp>; } } } Codec { port { codec: endpoint { remote-endpoint = <&i2s-codec>; } } } -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html