Re: [PATCH] ALSA: hda/cs35l41: Add DSD property override for ASUS UX3405CA

[Takashi Iwai <tiwai@suse.de>]

On Thu, 06 Aug 2026 15:38:39 +0200,
Stefan Binding (Opensource) wrote:
> 
> Hi Takashi,
> 
> Unfortunately, this does not look like an ACPI issue.
> This laptop is an external boost laptop, but this patch is changing the
> properties to redefine it as internal boost.
> This could cause issues with the amplifiers.
> 
> It looks like speaker protection is kicking in after 1s, but I don't know
> why.
> I recommend the OP create a BugZilla so we can investigate this separately.
> I also recommend we do not take this patch, as it might damage this laptop.

OK, thanks for confirmation, it's an important information!


Takashi

> 
> Thanks,
> Stefan
> 
> > -----Original Message-----
> > From: Takashi Iwai <tiwai@suse.de>
> > Sent: Thursday, August 6, 2026 10:46 AM
> > To: sbinding@opensource.cirrus.com
> > Cc: Gemayel Lira <gemayellira@gmail.com>; alsa-devel@alsa-project.org
> > Subject: Re: [PATCH] ALSA: hda/cs35l41: Add DSD property override for ASUS
> > UX3405CA
> > 
> > On Sun, 02 Aug 2026 01:00:22 +0200,
> > Gemayel Lira wrote:
> > >
> > >
> > > The ASUS Zenbook 14 UX3405CA (SSID 1043:1A63) has internal CS35L41
> > > amplifiers, but was using the missing_speaker_id_gpio2 fallback entry.
> > > This caused the right speaker channel to bind with VSPK voltage switch
> > > disabled
> > > (VSPK: 0), leading to a volume drop ~1 second after starting playback
> > > due to power imbalance protection.
> > >
> > > Add an explicit entry for 10431A63 in cs35l41_config_table with
> > > internal boost type, 4500mA peak current, and switch its model mapping
> to
> > generic_dsd_config.
> > > This resolves the volume drop issue and enables proper internal boost
> > > for both channels.
> > >
> > > Pull Request on SOF Project:
> > > https://github.com/thesofproject/linux/pull/5866
> > >
> > > Signed-off-by: Gemayel Lira <gemayellira@gmail.com>
> > >
> > > From 10431A6300000000000000000000000000000000 Mon Sep 17
> > 00:00:00 2001
> > > From: Gemayel Lira <gemayellira@gmail.com>
> > > Date: Sat, 1 Aug 2026 19:15:00 -0300
> > > Subject: [PATCH] ALSA: hda/cs35l41: Add DSD property override for ASUS
> > > UX3405CA
> > >
> > > The ASUS Zenbook 14 UX3405CA (SSID 1043:1A63) has internal CS35L41
> > > amplifiers, but was using the `missing_speaker_id_gpio2` fallback entry.
> > > This caused the right speaker channel to bind with VSPK voltage switch
> > > disabled
> > > (VSPK: 0), leading to a volume drop ~1 second after starting playback
> > > due to power imbalance protection.
> > >
> > > Add an explicit entry for 10431A63 in cs35l41_config_table with
> > > internal boost type, 4500mA peak current, and switch its model mapping
> to
> > `generic_dsd_config`.
> > > This resolves the volume drop issue and enables proper internal boost
> for
> > both channels.
> > >
> > > Signed-off-by: Gemayel Lira <gemayellira@gmail.com>
> > 
> > Stefan, is this also covered in your side?
> > Or shall we just take this?
> > 
> > 
> > BTW, Gemayel, at the next time, please submit to linux-
> > sound@vger.kernel.org.  It's the place for kernel patches, while
> alsa-devel ML is
> > mostly for only user-space stuff.
> > 
> > 
> > thanks,
> > 
> > Takashi
> > 
> > 
> > > ---
> > >  sound/hda/codecs/side-codecs/cs35l41_hda_property.c | 3 ++-
> > >  1 file changed, 2 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/sound/hda/codecs/side-codecs/cs35l41_hda_property.c
> > > b/sound/hda/codecs/side-codecs/cs35l41_hda_property.c
> > > index 416d7bf..1cf12f8 100644
> > > --- a/sound/hda/codecs/side-codecs/cs35l41_hda_property.c
> > > +++ b/sound/hda/codecs/side-codecs/cs35l41_hda_property.c
> > > @@ -104,6 +104,7 @@ static const struct cs35l41_config
> > cs35l41_config_table[] = {
> > >  	{ "104317F3", 2, INTERNAL, { CS35L41_LEFT, CS35L41_RIGHT, 0, 0 },
> > 0, 1, -1, 1000, 4500, 24 },
> > >  	{ "10431863", 2, INTERNAL, { CS35L41_LEFT, CS35L41_RIGHT, 0, 0 },
> > 1, 2, 0, 1000, 4500, 24 },
> > >  	{ "104318D3", 2, EXTERNAL, { CS35L41_LEFT, CS35L41_RIGHT, 0, 0 },
> > 0,
> > > 1, -1, 0, 0, 0 },
> > > +	{ "10431A63", 2, INTERNAL, { CS35L41_LEFT, CS35L41_RIGHT, 0, 0 },
> > > +-1, 2, -1, 1000, 4500, 24 },
> > >  	{ "10431A83", 2, INTERNAL, { CS35L41_LEFT, CS35L41_RIGHT, 0, 0 },
> > 0, 1, -1, 1000, 4500, 24 },
> > >  	{ "10431B93", 2, INTERNAL, { CS35L41_LEFT, CS35L41_RIGHT, 0, 0 },
> > 1, 2, 0, 1000, 4500, 24 },
> > >  	{ "10431C9F", 2, INTERNAL, { CS35L41_LEFT, CS35L41_RIGHT, 0, 0 },
> > 1,
> > > 2, 0, 1000, 4500, 24 }, @@ -530,7 +531,7 @@ static const struct
> > cs35l41_prop_model cs35l41_prop_model_table[] = {
> > >  	{ "CSC3551", "104317F3", generic_dsd_config },
> > >  	{ "CSC3551", "10431863", generic_dsd_config },
> > >  	{ "CSC3551", "104318D3", generic_dsd_config },
> > > -	{ "CSC3551", "10431A63", missing_speaker_id_gpio2 },
> > > +	{ "CSC3551", "10431A63", generic_dsd_config },
> > >  	{ "CSC3551", "10431A83", generic_dsd_config },
> > >  	{ "CSC3551", "10431B93", generic_dsd_config },
> > >  	{ "CSC3551", "10431C9F", generic_dsd_config },
> > > --
> > > 2.43.0
>