ALSA,, no sorry
You could probably get Armbian (on emmc) to work
by replacing its uboot with PCM
Not sure, I think PCM is a BSP, separate trust.img???
If you have a usb->emmc adapter
OR,,, as the very last stage of an install
---
boot order: you are correct for uboot load
But uboot can then change the search order
If you search uboot.img for "boot_targets" ,,, for uboot emmc is always mmc0,,, SD mmc1
something like,,,, strings uboot.img|grep -i boot_
You could probably get Armbian (on emmc) to work
by replacing its uboot with PCM
Not sure, I think PCM is a BSP, separate trust.img???
If you have a usb->emmc adapter
OR,,, as the very last stage of an install
---
boot order: you are correct for uboot load
But uboot can then change the search order
If you search uboot.img for "boot_targets" ,,, for uboot emmc is always mmc0,,, SD mmc1
something like,,,, strings uboot.img|grep -i boot_