linux-kernel - Re: [PATCH AUTOSEL 5.7 15/53] ASoC: SOF: Intel: add PCI IDs for ICL-H and TGL-H

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Date:   Thu, 2 Jul 2020 10:42:21 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Mark Brown <broonie@...nel.org>, Sasha Levin <sashal@...nel.org>
Cc:     Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>,
        alsa-devel@...a-project.org,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        sound-open-firmware@...a-project.org
Subject: Re: [PATCH AUTOSEL 5.7 15/53] ASoC: SOF: Intel: add PCI IDs for ICL-H
 and TGL-H

On 7/2/20 6:18 AM, Mark Brown wrote:
> On Wed, Jul 01, 2020 at 09:21:24PM -0400, Sasha Levin wrote:
>> From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
>>
>> [ Upstream commit c8d2e2bfaeffa0f914330e8b4e45b986c8d30b58 ]
>>
>> Usually the DSP is not traditionally enabled on H skews but this might
>> be used moving forward.
> 
> "This might be used moving forward"?

There are two conditions for the SOF driver to be used in a distro:
a) the DSP needs to be enabled (as reported by the pci class info)
b) sound/hda/intel-dsp-config.c needs to contain a quirk to select SOF 
over the legacy HDaudio, such as presence of DMIC/SoundWire or a known 
vendor DMI.

Traditionally for desktops neither a) nor b) are true, but this is 
changing: we will start adding quirks for specific product lines as 
requested by OEMs.

Does this answer to your question?