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Android JellyBean AM37x + TPS65950 Audio output problem

phoenixtju
Expert 1600 points
Other Parts Discussed in Thread: TPS65950

Hi, experts

We are using AM37x+TPS65950 on our board, but audio out on TPS65950 we connected is PREDRIV.RIGHT/ADCIN7 and PREDRIV.LEFT/VMID,  on TI AM37x EVM audio out is HSOL and HSOR.

We get source code of Android JellyBean from http://gitorious.org/rowboat. We modified uboot and kernel to make it running on our board. But when we try to play music on our board, we can not hear anything.

Would someone help me to make audio output from PREDRIV.RIGHT/ADCIN7 and PREDRIV.LEFT/VMID.

Thanks in advance.

Stephen

  • 0
    TI__Genius 10210 points

    I am not familiar with the specific part that you are using. However, generally for Android the following process is recommended:

    - Tune alsa mixer/tinymix settings and ensure that audio playback and capture works from command-line

    - Update the Audio HAL in the android source with the new / updated mixer settings.

    Note that generally with Android, the mixer settings should be such that the Volume level is 85-90% of maximum. This is because the present HAL does not hook up with the Android Volume control. All Android volume control is done in software itself.