高通SMD450 pop音问题回顾

打开外部功放开关

hardware/qcom/audio/configs/msm8953/mixer_paths_mtp.xml

  <path name="hdmi"></path><!-- llw 231228 add Ext Spk Switch --> 	<path name="speaker"><ctl name="RX3 MIX1 INP1" value="RX1" /><ctl name="RX3 Digital Volume" value="90" /><ctl name="LINE_OUT" value="Switch" /><ctl name="Ext Spk Switch" value="On" /></path><path name="speaker-and-hdmi"><path name="speaker" /><path name="hdmi" /></path>

设备树配置功放使能引脚

&int_codec {qcom,model = "msm8953-snd-card-mtp";qcom,cdc-us-euro-gpios = <&tlmm 63 0>;qcom,msm-spk-ext