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1Mikroe-PROTO audio board2 3Required properties:4 - compatible: "mikroe,mikroe-proto"5 - dai-format: Must be "i2s".6 - i2s-controller: The phandle of the I2S controller.7 - audio-codec: The phandle of the WM8731 audio codec.8Optional properties:9 - model: The user-visible name of this sound complex.10 - bitclock-master: Indicates dai-link bit clock master; for details see simple-card.txt (1).11 - frame-master: Indicates dai-link frame master; for details see simple-card.txt (1).12 13(1) : There must be the same master for both bit and frame clocks.14 15Example:16 sound {17 compatible = "mikroe,mikroe-proto";18 model = "wm8731 @ sama5d2_xplained";19 i2s-controller = <&i2s0>;20 audio-codec = <&wm8731>;21 dai-format = "i2s";22 };23};24