linux-kernel - Re: [PATCH v5 1/2] ASoC: qcom: document apq8016 sbc machine driver bindings

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Message-ID: <557722F5.7020506@linaro.org>
Date:	Tue, 09 Jun 2015 18:31:33 +0100
From:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:	Mark Brown <broonie@...nel.org>
CC:	alsa-devel@...a-project.org, Rob Herring <robh+dt@...nel.org>,
	Patrick Lai <plai@...eaurora.org>,
	Banajit Goswami <bgoswami@...eaurora.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	kwestfie@...eaurora.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v5 1/2] ASoC: qcom: document apq8016 sbc machine driver
 bindings



On 09/06/15 18:13, Mark Brown wrote:
> On Tue, Jun 09, 2015 at 06:08:24PM +0100, Srinivas Kandagatla wrote:
>
>>>>> +- external	: flag to indicate if the I2S is connected to external codec
>
>>> not sure I understand why we need a boolean property indicating if an
>>> external CODEC is in use - what is the consequence of setting this
>>> property?
>
>> As of today, the consequence of setting this flag is to setup correct
>> dai_link names.
>> Also there are some limitations on which MI2S can be configured to external
>> or internal codecs, this flag can be used in future to validate such
>> configurations, if required.
>
> That validation sounds like something that the SoC drivers should be
> doing if required rather than the machine driver - otherwise every
> machine driver using this SoC would have to implement the same
> validation.

Thats a valid point, for now I can move to using dai link name property 
instead of external flag, this should work for now. I will add the 
validation logic in SOC driver if required in future.
>
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