snd-rn-pci-acp3x - auto dmic detection unreliable

[Jaroslav Kysela]

Dne 18. 11. 20 v 10:25 Mukunda, Vijendar napsal(a):
> [AMD Public Use]

AMD: You just replicated my original question without any answer (2 weeks+).
Do you have something to share or do you not support your code?

				Jaroslav

> -----Original Message-----
> From: Jaroslav Kysela <perex at perex.cz> 
> Sent: Wednesday, November 18, 2020 2:37 PM
> To: Mukunda, Vijendar <Vijendar.Mukunda at amd.com>
> Cc: ALSA development <alsa-devel at alsa-project.org>
> Subject: snd-rn-pci-acp3x - auto dmic detection unreliable
> 
> Hi,
> 
> 	it seems that the ACPI auto-detection of the presence the digital microphone connected to AMD Renoir audio bridge is unreliable. It may be that hardware vendors do not provide the correct ACPI tables.
> 	Could you clarify the usage of _WOV integer value? It seems that this value is set on those plaforms which do not have the digital microphone (the microphone is connected to the HDA codec):
> 
> _WOV integer value should be set only when DMIC is connected to APU.
> When DMIC is not available, _WOV integer value should be set to zero by BIOS.
> 
> Lenovo IdeaPad 5 (15ARE05)
> Lenovo Thinkpad X395
> 
> 	In any case, we should probably improve the auto-detection using DMI or other platform info.
> 
> 					Jaroslav
> 
> BugLink: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugzilla.redhat.com%2Fshow_bug.cgi%3Fid%3D1892115&data=04%7C01%7CVijendar.Mukunda%40amd.com%7C4d901531b6454bebc58208d88ba15a4b%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637412872412887848%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=S7769uYGT3db%2BaztzZyobmVN2leseXPqjR6pktFUaR0%3D&reserved=0
> 
> --
> Jaroslav Kysela <perex at perex.cz>
> Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
> 


-- 
Jaroslav Kysela <perex at perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.