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Tue, 10 Nov 2026 17:40:15 -0800 (PST) Received: from myarch ([61.254.29.71]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3b17db9d1fbsm1912111a91.15.2026.11.10.17.40.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Nov 2026 17:40:14 -0800 (PST) From: fixca X-Google-Original-From: fixca To: broonie@kernel.org, Vijendar.Mukunda@amd.com, shumingf@realtek.com Cc: linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, Jaehoon Kim , "Claude Opus 5.5" Subject: [PATCH RFC v2 1/2] ASoC: amd: acp: Add ACP70 ACPI flag override for LG gram 16Z95U Date: Wed, 11 Nov 2026 10:39:09 +0900 Message-ID: <20261111013953.4011-2-jaehoon1744@gmail.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261111013953.4011-1-jaehoon1744@gmail.com> References: <20261111013953.4011-1-jaehoon1744@gmail.com> X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Jaehoon Kim The LG gram 16 (16Z95U, AMD Ryzen AI 400 series, ACP rev 0x72) BIOS sets "acp-audio-config-flag" to 0x10 (FLAG_AMD_LEGACY_ONLY_DMIC), but the machine has no ACP PDM microphone. All audio endpoints are SoundWire peripherals declared under the ACP SoundWire controller: link 0: RT713 (UAJ + SmartMic functions), _ADR 0x000030025D071301 link 1: RT1320 (SmartAmp function), _ADR 0x000131025D132001 With the flag honoured, snd_pci_ps bails out with -ENODEV, the legacy snd_acp_pci driver binds instead and fails with: platform acp_asoc_acp70.0: warning: No matching ASoC machine driver found so no sound card is created at all. Add the machine to acp70_acpi_flag_override_table so that the SoundWire path is used. Tested on LG gram 16Z95U-GS59K (PCI SSID 1854:056c): with this change snd_pci_ps binds and both peripherals enumerate (sdw:0:0:025d:0713:01, sdw:0:1:025d:1320:01). Signed-off-by: Jaehoon Kim Co-Authored-By: Claude Opus 5.5 --- v2: rebased onto broonie/sound for-next (v1 did not apply). 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 3d4c852..febf559 100644 --- a/sound/soc/amd/acp-config.c +++ b/sound/soc/amd/acp-config.c @@ -140,6 +140,13 @@ static const struct dmi_system_id acp70_acpi_flag_override_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "Dell 14S DS14265"), }, }, + { + /* LG gram 16 16Z95U (ACP 7.2) */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"), + DMI_MATCH(DMI_PRODUCT_NAME, "16Z95U"), + }, + }, {} }; -- 2.43.0