SDAA199 December   2025 AM620-Q1 , AM625 , AM625-Q1 , AM62A3 , AM62A3-Q1 , AM62A7 , AM62A7-Q1 , AM62P , AM62P-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Software Architecture
  6. 3 Sound Card Information
  7. 4 McASP - External Signals
  8. 5 MCASP Clock Generation and Configurations
  9. 6 Dummy Sound Card DTS Changes
  10. 7 Single DAI Link or a Single Sound Card
  11. 8 Multiple DAI Links - Single Card but Multiple Sub-Devices
  12. 9 MCASP - Practical Examples
  13. 10McASP as a Receiver
    1. 10.1 ADC or Codec as Clock Master
    2. 10.2 Device Tree Changes - Codec as Master and MCASP as Slave
  14. 11MCASP as Transmitter
    1. 11.1 Device Tree Changes - With Codec as Slave and MCASP as Master
  15. 12References

3 Sound Card Information

The registered sound card information can be listed as follows using the commands aplay -l and arecord -l.

For example, the stereo sound card is registered as card 0.

root@am62axx-evm:~# aplay -l                   
**** List of PLAYBACK Hardware Devices ****
card 0: AM62AxSKEVM [AM62Ax-SKEVM], device 0: 2b10000.audio-controller-tlv320aic3x-hifi tlv320aic3x-hifi-0 [2b10000.audio-controller-tlv320aic3x-hifi tlv320aic3x-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Alsa mixer controls to set playback volume and gains on the Record path:

amixer -c 0 cset numid=71 on
amixer -c 0 cset numid=70 on
amixer -c 0 cset numid=64 on
amixer -c 0 cset numid=71 on
amixer -c 0 cset numid=70 on
amixer -c 0 cset numid=64 on
amixer -c 0 cset numid=65 on
amixer -c 0 cset numid=15 127