linux-kernel - Re: [alsa-devel] [PATCH] ASoC: rt5659: Add mclk controls

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Date:	Fri, 29 Jul 2016 22:25:14 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	mark.rutland@....com, oder_chiou@...ltek.com,
	alsa-devel@...a-project.org, devicetree@...r.kernel.org,
	Darren Hart <dvhart@...ux.intel.com>, lgirdwood@...il.com,
	linux-kernel@...r.kernel.org,
	Nicolin Chen <nicoleotsuka@...il.com>, robh+dt@...nel.org,
	bardliao@...ltek.com
Subject: Re: [alsa-devel] [PATCH] ASoC: rt5659: Add mclk controls

On Fri, Jul 29, 2016 at 05:39:33PM +0100, Mark Brown wrote:
> On Fri, Jul 29, 2016 at 09:45:21PM +0530, Vinod Koul wrote:
> 
> > Yeah I am not aware of any plan to have clks on x86. For audio we are not
> > going to use much. ACPI and controller w/ firmware does the job.
> 
> > I have added Darren, he oversee platform things so might know if clocks
> > would be there in future..
> 
> Not having controllable clocks is fine but as we've discussed before
> you're going to need to represent the clocks that are there with fixed
> clocks instantiated through whatever you use to enumerate boards.  We
> don't want to have to special case x86 all the time in CODEC drivers.

Right I don't disagree on that. But we are not there yet!

Pierre managed to get that working on BYT, CHT nosuch luck. Further down the
DSPs fw is managing it, not even exposed to SW :(

But yes I can try to get the controller register as a clock provider and set
things that way. Let me see what can be done here.
We can discuss this at uConf, I will add that as topic :)

Thanks
-- 
~Vinod

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