[Letux-kernel] [PATCH 0/8] Get sound playback working on the Pandora again

Stefan Leichter sle85276 at gmx.de
Fri Jan 7 17:50:34 CET 2022

Hello Grond,

a late happy new year and thank you for your work.

On 31.12.21 01:41, Grond wrote:
> Note that these changes only fix playback. Recording sound does not
> currently work for as yet unknown reasons. However, given the (mind
> boggling) number of ALSA kcontrols exposed by the TWL4030's sound
> capture codec, it is likely that there is just a switch that is turned
> off somewhere.

Today I tried on my 1GHz pandora the new kernel from hns (5.16.0-rc8-letux+) with includes you patches. Did you notice in /var/log/syslog or dmesg output the line:

[   17.557952] omap3pandora-sound omap3pandora-sound: Failed to register sound card: -517

This can be the reason for the not working audio input. If you change in soc-core.c line 858 from dev_dbg to dev_err you will see the problem in dmesg:

[   17.246490] omap3pandora-sound omap3pandora-sound: ASoC: codec component pcm1773-codec not found for link PCM1773

One thing was driving me mad. When I login only via ssh aplay -l doesn't show any audio devices. After login on the pandora keyboard the playback device (pcm1773-hifi-0) appears and is usable.

Thank you

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