linux-kernel - Re: [PATCH v2 1/2] dt-bindings: sound: Add DT bindings for Broadcom Cygnus audio

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Message-ID: <20151106103147.GZ18409@sirena.org.uk>
Date:	Fri, 6 Nov 2015 10:31:47 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Simran Rai <ssimran@...adcom.com>
Cc:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, Ray Jui <rjui@...adcom.com>,
	Scott Branden <sbranden@...adcom.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Lori Hikichi <lhikichi@...adcom.com>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	bcm-kernel-feedback-list@...adcom.com,
	linux-kernel@...r.kernel.org,
	Arun Parameswaran <arunp@...adcom.com>,
	alsa-devel@...a-project.org
Subject: Re: [PATCH v2 1/2] dt-bindings: sound: Add DT bindings for Broadcom
 Cygnus audio

On Thu, Nov 05, 2015 at 12:01:52PM -0800, Simran Rai wrote:
> On 11/4/2015 6:07 AM, Mark Brown wrote:
> >On Mon, Nov 02, 2015 at 02:11:23PM -0800, Simran Rai wrote:

> >>+  Interfaces grouping of serial port. In multi-channel stereo, use
> >>+  "2_0", in 3.1 multi-channel grouping, use "3_1" and in 5.1
> >>+  multi-channel grouping, use "5_1".

> >I don't really understand what this means or why this is not runtime
> >configured.

> By runtime configured, do you mean passing the channel grouping through
> machine file? Is there any specific callback that I can use?

No, this appears to just be setting the number of channels which is
normally configured depending on how many channels userspace is playing.

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