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

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.
>
> Best regards,
> Alex