The ASUS Zenbook S16 (UM5606GA) with AMD Ryzen AI 9 465 (Strix Point,
ACP 7.0) has a BIOS that incorrectly sets the ACPI property
'acp-audio-config-flag' to 0x10 (FLAG_AMD_LEGACY_ONLY_DMIC) for the ACP
device. This prevents snd_pci_ps from probing the SoundWire bus, resulting
in no internal audio (dummy output only).

The hardware uses a Cirrus Logic CS42L43 (headphone/jack) and four CS35L56
smart amplifiers (speakers), all on SoundWire link 1. The corresponding
machine table entry (acp70_cs42l43_l1u0_cs35l56x4_l1u0123) already exists
in amd-acp70-acpi-match.c and correctly describes this topology.

Add a DMI quirk to override the flag to 0, consistent with the existing
entry for the HN7306EA.

Signed-off-by: Jasper Smet <josbeir@gmail.com>
---
 sound/soc/amd/acp-config.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sound/soc/amd/acp-config.c b/sound/soc/amd/acp-config.c
index 1604ed679..309dc9ed6 100644
--- a/sound/soc/amd/acp-config.c
+++ b/sound/soc/amd/acp-config.c
@@ -30,6 +30,13 @@ static const struct dmi_system_id acp70_acpi_flag_override_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "HN7306EA"),
 		},
 	},
+	{
+		/* ASUS Zenbook S16 UM5606GA (Strix Point, ACP 7.0) */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Zenbook S16 UM5606GA"),
+		},
+	},
 	{}
 };
 
-- 
2.54.0

On Wed, 13 May 2026 07:21:37 +0200, Jasper Smet wrote:
> ASoC: amd: acp: Add DMI quirk for ASUS Zenbook S16 UM5606GA

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-7.1

Thanks!

[1/1] ASoC: amd: acp: Add DMI quirk for ASUS Zenbook S16 UM5606GA
      https://git.kernel.org/broonie/sound/c/6e4bfd9da885

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark