linux-kernel - failed to add SPI device CSC3556 from ACPI in v6.17.x for Cirrus Logic CS35L56

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Message-ID: <CAHRbhAkDcYQj=VQrNdc7T7WfDfiuDWpnk2s3pjoeouptgy_K1g@mail.gmail.com>
Date: Wed, 5 Nov 2025 19:43:33 +0530
From: Iakov Pustilnik <xyapus@...il.com>
To: david.rhodes@...rus.com, rf@...nsource.cirrus.com
Cc: linux-sound@...r.kernel.org, patches@...nsource.cirrus.com, 
	linux-kernel@...r.kernel.org
Subject: failed to add SPI device CSC3556 from ACPI in v6.17.x for Cirrus
 Logic CS35L56

Hello to the Maintainers!

I'm using an Asus G16 GU605CW laptop which has a Cirrus Logic CSC3556
audio subsystem.
There's a problem when initializing audio devices - the bass amps are
not initialized correctly which produces low volume high pitched sound
only from the on-board speakers.

The corresponding relevant dmesg output follows:

[    0.000000] DMI: ASUSTeK COMPUTER INC. ROG Zephyrus G16
GU605CW_GU605CW/GU605CW, BIOS GU605CW.306 05/07/2025
...skipped...
[   12.132316] cs35l56-hda spi0-CSC3556:00-cs35l56-hda.0: Cirrus Logic
CS35L56 Rev B0 OTP3 fw:3.4.4 (patched=0)
[   12.140405] snd_hda_codec_alc269 hdaudioC0D0: ALC285: picked fixup
for PCI SSID 1043:1034
[   12.141206] snd_hda_codec_alc269 hdaudioC0D0: Found 2 CSC3556 on
spi (-%s:00-cs35l56-hda.%d)
[   12.142177] snd_hda_codec_alc269 hdaudioC0D0: autoconfig for
ALC285: line_outs=2 (0x14/0x17/0x0/0x0/0x0) type:speaker
[   12.142181] snd_hda_codec_alc269 hdaudioC0D0:    speaker_outs=0
(0x0/0x0/0x0/0x0/0x0)
[   12.142187] snd_hda_codec_alc269 hdaudioC0D0:    hp_outs=1
(0x21/0x0/0x0/0x0/0x0)
[   12.142188] snd_hda_codec_alc269 hdaudioC0D0:    mono: mono_out=0x0
[   12.142196] snd_hda_codec_alc269 hdaudioC0D0:    inputs:
[   12.142197] snd_hda_codec_alc269 hdaudioC0D0:      Internal Mic=0x12
[   12.142198] snd_hda_codec_alc269 hdaudioC0D0:      Internal Mic=0x13
[   12.142198] snd_hda_codec_alc269 hdaudioC0D0:      Mic=0x19
[   12.142199] snd_hda_codec_alc269 hdaudioC0D0:      Mic=0x1b
[   12.157240] cs35l56-hda spi0-CSC3556:00-cs35l56-hda.0: DSP system
name: '10431034-spkid1', amp name: 'AMP1'
[   12.158447] pxa2xx-spi pxa2xx-spi.3: cs1 >= max 1
[   12.158449] spi_master spi0: error -EINVAL: failed to add SPI
device CSC3556:00 from ACPI
[   12.164736] Serial bus multi instantiate pseudo device driver
CSC3556:00: probe with driver Serial bus multi instantiate pseudo
device driver failed with error -22

I would be happy to provide any additional information or build a
custom kernel to test fixes if anybody is able to provide
corresponding patches & a little guidance in the process.

Thank you in advance,
Iakov