The end goal is to configure sai1, txd0 for 8 frame, 32-bit, TDM mode (if it's not already) under Yocto Linux.
In "fsl-imx8mq-evk.dts", I see "fsl,sai-multi-lane" and "fsl,dataline,dsd = ...", but there's no mention (that I can find) in the devicetree documentation fsl-sai.txt file to describe either of these two options.
I don't know if I'm even looking in the right place given my goal. Where should the sai be configured under Linux?
For what it's worth, I think I see how the ak4458 gets configured in alsa.state and alsa.conf, but I'm guessing that this will tell the ak4458 driver how to configure the ak4458, and what I really need is the other end, the sai configuration.