linux-kernel - Re: [PATCH v5 11/14] ASoC: add simple-graph-card document

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Date:   Wed, 7 Dec 2016 00:10:49 +0000
From:   Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:     Rob Herring <robh@...nel.org>
CC:     Mark Brown <broonie@...nel.org>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Simon <horms@...ge.net.au>,
        Laurent <laurent.pinchart@...asonboard.com>,
        Guennadi <g.liakhovetski@....de>,
        "Grant Likely" <grant.likely@...aro.org>,
        Frank Rowand <frowand.list@...il.com>,
        Linux-DT <devicetree@...r.kernel.org>,
        Linux-Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 11/14] ASoC: add simple-graph-card document


Hi Rob

> > Do you mean, is this OK for OF graph ?
> 
> Yes, something like this.

Wow!! Thanks !!
it makes new OF-graph easier !!

> > in driver point of view, "I2S" is sound card here.
> 
> Well, that seems odd to me because I2S should just be the h/w block
> that interfaces to I2S/SSI signals. I'd expect you still have a card
> node that references these nodes. Maybe it just references the DSP and
> then you walk the graph from there to find the I2S controller and
> codec.

If my understanding was correct, this is good ?

Card {
	ports {
		port@0 {
			card-dsp: endpoint {
				remote-endpoint = <&dsp>;
			};
		};
		port@1 {
			card-codec: endpoint {
				remote-endpoint = <&codec>;
			};
		}
	}
}

DSP {
	port {
		dsp: endpoint {
			remote-endpoint = <&card-dsp>;
		}
	}
}

Codec {
	port {
		codec: endpoint {
			remote-endpoint = <&card-codec>;
		}
	}
}