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Tue, 10 Nov 2026 04:55:17 -0800 (PST) Received: from myarch ([121.165.40.114]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3751dae63a6sm6855380eec.1.2026.11.10.04.55.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Nov 2026 04:55:17 -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 Fable 5.2" Subject: [PATCH RFC 1/2] ASoC: amd: acp: Add ACP70 ACPI flag override for LG gram 16Z95U Date: Tue, 10 Nov 2026 21:54:28 +0900 Message-ID: <20261110125459.3924-2-jaehoon1744@gmail.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261110125459.3924-1-jaehoon1744@gmail.com> References: <20261110125459.3924-1-jaehoon1744@gmail.com> X-Mailing-List: linux-kernel@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): after 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 Fable 5.2 --- 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 8e15638..8dd5fb4 100644 --- a/sound/soc/amd/acp-config.c +++ b/sound/soc/amd/acp-config.c @@ -63,6 +63,13 @@ static const struct dmi_system_id acp70_acpi_flag_override_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "Vivobook 18 M1807GA"), }, }, + { + /* LG gram 16 16Z95U (ACP 7.2): RT713 on link 0, RT1320 on link 1 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"), + DMI_MATCH(DMI_PRODUCT_NAME, "16Z95U"), + }, + }, {} }; -- 2.43.0