Re: [PATCH 0/4] Add support for the bass speakers of Lenovo Yoga Slim 7 Carbon 14ACN6

[Takashi Iwai <tiwai@suse.de>]

On Tue, 29 Sep 2026 16:30:42 +0200,
Stefan Binding wrote:
> 
> On 29/09/2026 10:45, Takashi Iwai wrote:
> > On Sun, 20 Sep 2026 11:28:04 +0200,
> > Ilya Pavlukhin wrote:
> >> The Lenovo Yoga Slim 7 Carbon 14ACN6 (82L0, Ryzen 5000) has four
> >> speakers. The two tweeters are driven directly by the ALC287, the two
> >> bass speakers by a pair of CS35L41 amplifiers on I2C. On Linux only
> >> the tweeters work [1].
> >>
> >> The amplifiers are described by ACPI HID CLSA0102, without _DSD, in a
> >> single node with both I2C addresses, the same way as CLSA0100/CLSA0101
> >> on the Legion 7. Patches 1-3 add CLSA0102 next to them. The Windows
> >> Cirrus driver configures CLSA0102 with an external speaker supply, so
> >> external boost is used.
> >>
> >> Patch 4 adds the codec quirk. The ALC287 only clocks the I2S bus to the
> >> amplifiers while pin 0x17 is enabled, and the BIOS marks that pin as
> >> unconnected.
> >>
> >> Tested on a Yoga Slim 7 Carbon 14ACN6 (BIOS H5CN42WW) with all four
> >> speakers playing. The DSP firmware (cs35l41-dsp1-spk-prot-17aa3856*)
> >> is not in linux-firmware yet. For testing it was taken from the Lenovo
> >> Windows driver package (tuning "Lenovo-S760-17AA383D"). Without it the
> >> driver falls back to the default spk-prot firmware.
> >>
> >> [1] https://bugzilla.kernel.org/show_bug.cgi?id=215632
> >>
> >> Ilya Pavlukhin (4):
> >>   ACPI: scan: Add CLSA0102 to the serial bus ignore list
> >>   platform/x86: serial-multi-instantiate: Add CLSA0102
> >>   ALSA: hda: cs35l41: Add support for CLSA0102
> >>   ALSA: hda/realtek: Add quirk for Lenovo Yoga Slim 7 Carbon 14ACN6
> > I can take the series, but before that, I'd like hear a confirmation
> > from Cirrus people.
> 
> Looks all OK to me.
> I'm going to send up firmware to linux-firmware for this laptop shortly.

Thanks for confirmation.

Now I applied all patches to sound git tree for-next branch.


Takashi