Re: [PATCH/BUG] ALSA: acp6x: Add DMI/PCI quirk for HP 255R G10 internal microphone (103c:8d22)

On 8/10/26 11:06, Mukunda,Vijendar wrote:
>
>
> On 8/9/26 18:22, Alexandru wrote:
>> Hello,
>>
>> The internal digital microphone (DMIC/PDM) on the HP 255R G10 laptop 
>> is not detected/working under Linux.
>>
>> SYSTEM INFORMATION:
>> - Model: HP 255R G10
>> - CPU: AMD Ryzen 7 7735U (Rembrandt-R / Yellow Carp)
>> - ACP PCI Device: 1022:15e2 (rev 60)
>> - Subsystem ID: 103c:8d22
>> - Tested Kernels: 6.x / 7.x (CachyOS / Arch Linux)
>>
>> PROBLEM DESCRIPTION:
>> The AMD ACP 6.x PCI device (1022:15e2) is bound by the 
>> `snd_pci_acp6x` driver, but no ALSA DMIC/PDM PCM capture device is 
>> instantiated (`arecord -l` only lists the HDA ALC236 codec).
>>
>> In Windows, the internal microphone works properly through the AMD 
>> Audio CoProcessor driver (amdacpbus.sys) using HP DMIC extensions 
>> (`amddmicextt_hp_*.inf`) and is presented as "Microphone Array (AMD 
>> Audio Device)".
>>
>> In Linux, the board subsystem ID (103c:8d22) appears to be missing 
>> from the DMI match table in `sound/soc/amd/yc/acp6x-mach.c` (or 
>> equivalent ACP 6.x machine driver).
>>
>> DMI / PCI DETAILS:
>> Vendor ID: 0x1022
>> Device ID: 0x15e2
>> Subsystem Vendor: 0x103c
>> Subsystem Device: 0x8d22
>>
>> `lspci -nnk -s 03:00.5`:
>> 03:00.5 Multimedia controller [0480]: Advanced Micro Devices, Inc. 
>> [AMD] Audio Coprocessor [1022:15e2] (rev 60)
>> Subsystem: Hewlett-Packard Company Device [103c:8d22]
>> Kernel driver in use: snd_pci_acp6x
>> Kernel modules: snd_pci_acp6x, snd_soc_acp6x_mach
>>
>> Requesting to add a quirk/entry for DMI_BOARD_NAME "8D22" / Subsystem 
>> 103c:8d22 to enable ACP PDM/DMIC support for this laptop model.
> @kareem: Add a machine driver quirk patch and share it for validation.

@Alexandru: Please find the attached patch for the addition of the DMI id's.

Kindly test it and let us know the results. Once validated, we will 
upstream the changes.

>>
>> Best regards,
>> Alex
>

From 98ef9b7bf45ef33d7fb9a04f47011b84e9e1b187 Mon Sep 17 00:00:00 2001
From: Syed Saba Kareem <[email protected]>
Date: Wed, 12 Aug 2026 15:46:05 +0530
Subject: [PATCH] ASoC: amd: yc: Add DMI entry for HP 255R G10 laptop

The HP 255R G10 laptop has an internal DMIC connected
to the AMD ACP6x audio coprocessor.
Add a DMI quirk entry so the internal microphone is
properly detected on this model.

Reported-by: [email protected]
Signed-off-by: Syed Saba Kareem <[email protected]>
---
 sound/soc/amd/yc/acp6x-mach.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sound/soc/amd/yc/acp6x-mach.c b/sound/soc/amd/yc/acp6x-mach.c
index 3f852393fc99..2eb5fbceac69 100644
--- a/sound/soc/amd/yc/acp6x-mach.c
+++ b/sound/soc/amd/yc/acp6x-mach.c
@@ -878,6 +878,13 @@ static const struct dmi_system_id yc_acp_quirk_table[] = {
 			DMI_MATCH(DMI_BOARD_NAME, "TM2423"),
 		}
 	},
+	{
+		.driver_data = &acp6x_card,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "HP"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "8D22"),
+		}
+	},
 	{}
 };
 
-- 
2.43.0