ChanServ changed the topic of #linux-rockchip to: Rockchip development discussion
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<diederik>
It looks like multi-channel audio broke with at least Rock64 with 5.14. It worked with 5.13. It's also broken in 5.14.6, but that's not part of the output: https://paste.debian.net/1214674/
<diederik>
With daily builds of LibreELEC (version 11, with kernel 5.14, but now also with 5.14.9) when playing video's, you only see the video, but there is no sound. Playing audio files also results in no sound
<diederik>
I'm now also trying to build a 5.14.10 kernel, but I assume it will also only have stereo and no multi-channel audio
<diederik>
That 5.13.12-1~exp2 output doesn't have a SPDIF sound card is correct as then SND_SOC_SPDIF wasn't enabled yet.
<diederik>
The dtb file in use is the same in all the test and is the one generated from the master branch. All other software is the same as well as well as the kernel config
<diederik>
So afaict, the only change is in the upstream kernel source
<diederik>
this is likely as far as I can 'debug' it (myself, at least for the time being)
<punit>
Could you possibly run a bisect to identify the commit that broke things?
<diederik>
I have heard of the term, but I have never done it before. I have recently learned how I can build a Debian (style) kernel based on upstream tags (with that I build the 5.14.0 kernel).
<diederik>
But each build takes me about half a day. And I have no clue how to target it to specific commits (which I _think_ I need to do).
<diederik>
So I expect that it'll probably take me weeks
<punit>
For such work, I would recommend moving away from building kernels with debian config to ones with a more limited config
<punit>
Regarding bisect, it's a feature of git and allows you to successively narrow down the range where a bad commit was introduced