iMX7d : TDM features with erratic audio channel assignment

Colibri iMX7d, 512Mo flash
Kernel : 4.14.170-rt75-0+git.62ad468b3107 #1 SMP PREEMPT RT

We use the TDM interface to play audio on 8 channels and we note that when playing audio on channel 1 it appears that after a while, the audio is present on channel 3 and no more on channel 1 (it’s always a shift of two channels) ; the time after it appears is between several hours or several days. We use a gst-launch-1.0 command to play a mp3 file ; the audio structure is Alsa + jackd.
Has someone meet this strange issue ? Thank you.

hello Phil_Elec,

did you try with newer BSP from us?

Best Regards,
Matthias Gohlke