Re: [alsa-devel] [PATCH 4/4 v6] ASoC: simple-card: add Device Tree support

[Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>]

On 02/20/2013 05:17 AM, Lars-Peter Clausen wrote:
> On 02/20/2013 01:48 AM, Kuninori Morimoto wrote:
>>
>> Hi Lars
>>
>> Thank you for checking patch
>>
>>>> +- simple-audio,dev			: phandle and port for CPU/CODEC
>>>> +- simple-audio,frame-master		: frame master
>>>> +- simple-audio,bitclock-master		: bitclock master
>>>> +#sound-dai-cells integer is required on simple-audio,dev phandle's node
>>>
>>> Shouldn't the names of '#sound-dai-cells' and 'simple-audio,dev' kind of
>>> match? E.g. '#sound-dai-cells' and 'sound-dai'. Maybe drop the sound, since
>>> the a in dai kind of implies this.
>>
>> Thank you, but I would like to keep "simple-audio" name for it too.
>> So, can I use
>> simple-audio-dai
>> #simple-audio-dai-cells
> 
> The requirement to be able to find the DAI via devicetree is not specific to
> the simple-audio driver. I'd prefer if we could come up with a common
> binding which can be used by multiple drivers. Since you also add the xlate
> (or match) function to the sound core it makes sense - in my option - to
> also have a generic phandle -> DAI look-up method in the core.

I agree here; the whole reason I've been pushing on creating a
standardized of_xlate_dai_name function and a standardized
#sound-dai-cells property is to allow the exact same property name and
function to be used for any audio-related DT binding.