Name prefix: Card implementing the routing property define the connection between audio components as list of string pair. Component using the same sink/source names may use the name prefix property to prepend the name of their sinks/sources with the provided string. Optional name prefix property: - sound-name-prefix : string using as prefix for the sink/source names of the component. Example: Two instances of the same component. amp0: analog-amplifier@0 { compatible = "simple-audio-amplifier"; enable-gpios = <&gpio GPIOH_3 0>; sound-name-prefix = "FRONT"; }; amp1: analog-amplifier@1 { compatible = "simple-audio-amplifier"; enable-gpios = <&gpio GPIOH_4 0>; sound-name-prefix = "BACK"; };