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These nodes are required by the Q6APM audio stack to > route audio packets between the application processor and the DSP. [...] > + gpr { > + compatible = "qcom,gpr"; > + qcom,glink-channels = "adsp_apps"; > + qcom,domain = ; > + qcom,intents = <512 20>; > + #address-cells = <1>; > + #size-cells = <0>; > + > + q6apm: service@1 { > + compatible = "qcom,q6apm"; > + reg = ; > + #sound-dai-cells = <0>; > + > + q6apmbedai: bedais { > + compatible = "qcom,q6apm-lpass-dais"; > + #sound-dai-cells = <1>; > + }; > + > + q6apmdai: dais { > + compatible = "qcom,q6apm-dais"; > + iommus = <&apps_smmu_0 0x09E1 0x0400>; Please consistently use lowercase hex Konrad