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Commit 015f630d authored by Jean-Francois Moine's avatar Jean-Francois Moine Committed by Mark Brown
Browse files

ASoC: simple-card: Add DT documentation for multi-DAI links 



Many couples of CPU/CODEC DAI links may be described in the DT
thanks to 'simple-audio-card,dai-link' containers.

Signed-off-by: default avatarJean-Francois Moine <moinejf@free.fr>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent cf7dc23c

Documentation/devicetree/bindings/sound/simple-card.txt

+41 −1
Original line number Diff line number Diff line
@@ -23,6 +23,11 @@ Optional properties: 


Required subnodes:



- simple-audio-card,dai-link		: container for the CPU and CODEC sub-nodes

					  This container may be omitted when the

					  card has only one DAI link.

					  See the examples.



- simple-audio-card,cpu			: CPU   sub-node

- simple-audio-card,codec		: CODEC sub-node
@@ -49,7 +54,7 @@ Note: 
   CPU and CODEC sides as we need to keep the settings identical for both ends

   of the link.



Example:

Example 1 - single DAI link:



sound {

	compatible = "simple-audio-card";
@@ -94,3 +99,38 @@ sh_fsi2: sh_fsi2@ec230000 { 
	interrupt-parent = <&gic>;

	interrupts = <0 146 0x4>;

};



Example 2 - many DAI links:



sound {

	compatible = "simple-audio-card";

	simple-audio-card,name = "Cubox Audio";

	simple-audio-card,format = "i2s";



	simple-audio-card,dai-link@0 {		/* I2S - HDMI */

		simple-audio-card,cpu {

			sound-dai = <&audio1 0>;

		};

		simple-audio-card,codec {

			sound-dai = <&tda998x 0>;

		};

	};



	simple-audio-card,dai-link@1 {		/* S/PDIF - HDMI */

		simple-audio-card,cpu {

			sound-dai = <&audio1 1>;

		};

		simple-audio-card,codec {

			sound-dai = <&tda998x 1>;

		};

	};



	simple-audio-card,dai-link@2 {		/* S/PDIF - S/PDIF */

		simple-audio-card,cpu {

			sound-dai = <&audio1 1>;

		};

		simple-audio-card,codec {

			sound-dai = <&spdif_codec>;

		};

	};

};