No HDMI audio when using Tow-Boot

If the main variable is LE u-boot vs. Tow-Boot and LE works, it implies the issue is something being done differently in Tow-Boot. In that case the "why doesn't it work" question really needs to be put to the Tow-Boot maintainers, not LE maintainers. As a general rule Linux should be configuring the hardware when it takes over from the boot environment, but in some cases you do find an underlying dependency on things like clocks where the bootloader is setting something and Linux is not (thus blindly inheriting whatever the bootloader did). LE is currently using u-boot 2022.10 with a few minor u-boot patches, but nothing that stands out as significant to me. In short..