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

["Mukunda,Vijendar" <vijendar.mukunda@xxxxxxx>]

Corrected typo error.

On 07/12/20 3:19 pm, Mukunda,Vijendar wrote:
> On 07/12/20 2:22 pm, Jaroslav Kysela wrote:
> > 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?
>
> We are already provided reply on 18th Nov.
>
> _WOV integer value should be set only when DMIC is connected to APU.
> When DMIC is not connected to APU,  _WOV integer value should be set to 
> zero by BIOS.
>
>   DMIC doesn't had auto presence detect logic on AMD platforms and DMIC 
> connection to AMD platform is simple wiring.
> Whether DMIC connected to APU or HDAUDIO codec can be decided by ODMs.
ODM BIOS has to update the _WOV method value based on DMIC connected to APU
> or not.
>
> -
> Vijendar
>
>
>
> >                 Jaroslav
> >
> > > -----Original Message-----
> > > From: Jaroslav Kysela <perex@xxxxxxxx>
> > > Sent: Wednesday, November 18, 2020 2:37 PM
> > > To: Mukunda, Vijendar <Vijendar.Mukunda@xxxxxxx>
> > > Cc: ALSA development <alsa-devel@xxxxxxxxxxxxxxxx>
> > > 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.
>
> We are using
> > > 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&amp;data=04%7C01%7CVijendar.Mukunda%40amd.com%7C99b9a10b76674aa6a28a08d89a8d75fc%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637429279661047562%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=CpZLrKf4pVdN6MmnmWUnXCLevFjySGuFW%2BJeLoYW%2BjQ%3D&amp;reserved=0 
> > >
> > >
> > > --
> > > Jaroslav Kysela <perex@xxxxxxxx>
> > > Linux Sound Maintainer; ALSA Project; Red Hat, Inc.