linux-kernel - Re: [alsa-devel] Correct modules for Bay Trail MAX98090 soc?

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Message-ID: <390ded29-9be2-ba24-b24e-25ed3db26430@linux.intel.com>
Date:	Fri, 12 Aug 2016 14:26:31 -0500
From:	Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:	Mark Brown <broonie@...nel.org>, Laura Abbott <labbott@...hat.com>
Cc:	alsa-devel@...a-project.org, Vinod Koul <vinod.koul@...el.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Takashi Iwai <tiwai@...e.com>,
	Liam Girdwood <lgirdwood@...il.com>
Subject: Re: [alsa-devel] Correct modules for Bay Trail MAX98090 soc?

On 8/12/16 11:12 AM, Mark Brown wrote:
> On Fri, Aug 12, 2016 at 08:51:34AM -0700, Laura Abbott wrote:
>> On 08/12/2016 04:49 AM, Mark Brown wrote:
>
>>> That's not really that helpful for a distro kernel (this is for Fedora
>>> AIUI).
>
>> Yes, this is unfortunate as it means that something is going to lose sound
>> support in Fedora. :( It's probably going to be the Chromebook unless another
>> group starts screaming louder.
>
> Debian will be in the same boat too, there's another release coming
> soon.

It's not necessarily terribly complicated to enable this codec:
- we could borrow code from the existing code from the 
cht_bsw_max98090_ti machine driver which relies on the dpcm driver.
- the patches developed for Baytrail-Cr will provide support for the 
19.2MHz MCLK needed by this codec, they should land on the alsa-devel 
mailing list this afternoon or early next week.
The main issue is to find hardware and someone with bandwidth to do the 
changes.