linux-kernel - ASoC HDMI errors with sof-hda-dsp on Intel platform (no PCM for intel-hdmi-hifiX)

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Message-ID: <CAL=B37=-_dBswNrQHc4dgfgZhoyjmaYQxE5dGZhQeB0ZGf0GtA@mail.gmail.com>
Date: Sat, 2 Aug 2025 12:46:07 +0200
From: Damian Tometzki <damian@...cv-rocks.de>
To: linux-sound@...r.kernel.org
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: ASoC HDMI errors with sof-hda-dsp on Intel platform (no PCM for intel-hdmi-hifiX)

Hi all,

I'm experiencing ASoC errors on an Intel-based system using the
`sof-hda-dsp` driver. After boot, the kernel logs repeated errors
related to HDMI outputs:

[   90.933290] snd_hda_codec_generic ehdaudio0D2:
snd_soc_find_pcm_from_dai: didn't find PCM for DAI intel-hdmi-hifi1
[   90.933295] snd_hda_codec_generic ehdaudio0D2: ASoC error (-22): at
snd_soc_dai_startup() on intel-hdmi-hifi1
...
[   91.016259] HDMI3: ASoC error (-22): at dpcm_fe_dai_startup() on HDMI3

These errors are repeated for HDMI1, HDMI2, and HDMI3. It appears that
`snd_soc_find_pcm_from_dai()` fails to resolve the DAI to a PCM, and
this breaks HDMI audio initialization.

**System info:**
- Kernel: current Linus build 2938ae2fa7cd
- Distro: Fedora 42
- HDMI monitor with audio capability isn´t connected

Is there a known fix or workaround?
Thanks in advance,
Damian