In some situation, the sound card connected to davinci-mcasp need AHCLKX as the master clock (lack of Crystal oscillator).
After applying the proper config of DTS, we got below results for kernel v4.19 :
When davinci-mcasp in playback mode, AHCLKX could output a 24MHz clock.But if davinci-mcasp in capture mode only, AHCLKX output nothing.
In some situation, the sound card connected to davinci-mcasp need AHCLKX as the master clock (lack of Crystal oscillator).
After applying the proper config of DTS, we got below results for kernel v4.19 :
When davinci-mcasp in playback mode, AHCLKX could output a 24MHz clock.
But if davinci-mcasp in capture mode only, AHCLKX output nothing.