HDA: LCTL manual setup

Open kv2019i opened this issue 4 years ago • 2 comments

Add logic to program LCTL in case clocks are not set up.

Patch "ALSA: hda - set intel audio clock to a proper value" in non-DSP legacy driver

Jan 26 '21 16:01 kv2019i

@kv2019i, do you recall what we should or should not do with this?

Jan 14 '25 14:01 ujfalusi

@ujfalusi This was found when comparing HDA programming between snd-hda-intel and SOF. Specifically this commit:

commit 1f9d3d98694b1cef93f99a54e6830e9717616ba6
Author: Libin Yang <[email protected]>
Date:   Thu Apr 6 19:18:21 2017 +0800

    ALSA: hda - set intel audio clock to a proper value

Original patch done to fix https://bugzilla.kernel.org/show_bug.cgi?id=188411 .

Starting point should be we do same exact programming (including any bug/workarounds) in SOF, but OTOH, this has been open for 4 years and nobody has complained, so maybe this is really not needed (read: in platforms SOF support, MLCAP is always set up correctly).

Jan 15 '25 09:01 kv2019i