Rock 5A Android No Audio over HDMI

[thanghn90]

I've tried 20241129 and 20240327 versions of the Android releases for Rock 5A. In both cases, there are no audio over HDMI (both the 8K and 4K ports). Only 3.5mm audio is working. In 20241129 image, changes to the Settings --> Display --> HDMI --> HDMI audio source doesn't make any difference, even after a reboot.

I can confirm mo123's Android TV ROM for Rock 5A has audio working through HDMI, but not through 3.5mm jack (which, ironically, is the exact opposite behavior of the official Android ROM):
https://forum.radxa.com/t/rom-rock5a-b-androidtv-12-by-mo123/15527

I know you're busy, so I really appreciate the time and effort you put into this little-but-mighty Rock 5A board. The official android ROM is currently the only Android ROM that recognizes and works with my RTL8822CE wifi+bluetooth card.

And if you're going to build a new image, please build one without google service (gms), just like the 20241129 version.
Many thanks in advance!