Hi Arun,

On Thu, Jun 26, 2025 at 8:52 AM Arun Raghavan [off-list ref] wrote:

From: Arun Raghavan <redacted>

On an imx8mm platform with an external clock provider, when running the
receiver (arecord) and triggering an xrun with xrun_injection, we see a
channel swap/offset. This happens sometimes when running only the
receiver, but occurs reliably if a transmitter (aplay) is also
concurrently running.

It seems that the SAI loses track of frame sync during the trigger stop
-> trigger start cycle that occurs during an xrun. Doing just a FIFO
reset in this case does not suffice, and only a software reset seems to
get it back on track.

This looks like the same h/w bug that is already handled for the
producer case, so we now do the reset unconditionally on config disable.

Signed-off-by: Arun Raghavan <redacted>
Reported-by: Pieterjan Camerlynck <redacted>

What about adding a Fixes tag and Cc stable so that it gets backported
to the stable trees?