How to setup Device Tree for Tas5720 for imx8mp?

[Ian75rezh]

Linux kernel 5.4.70. For example using a simple sound card.

[Ian75rezh]

The code from another working project (slightly modified), but in this case it does not work. The sound card is not being created.

sound: sound {
	compatible = "simple-audio-card";
        simple-audio-card,name = "TAS5720";
        simple-audio-card,format = "left_j";
               
	simple-audio-card,bitclock-master = <&dailink_master>;
	simple-audio-card,frame-master = <&dailink_master>;
        simple-audio-card,mclk-fs = <64>;
	simple-audio-card,widgets =
		"Line", "Line Out";
	simple-audio-card,routing =
            "Line Out", "LOUT";

	status = "ok";

	simple-audio-card,cpu {
		sound-dai = <&sai3>;
	};

	dailink_master: simple-audio-card,codec {
		sound-dai = <&codec>;
		clocks = <&clk IMX8MP_CLK_SAI3>;
		status= "ok";          
	};
};

&i2c2 {
	clock-frequency = <100000>;
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_i2c2>;
	status = "okay";

	codec: tas5720@6c{
		compatible = "ti,tas5720";
		#sound-dai-cells = <0>;
		reg = <0x6c>;
        dvdd-suply = <&reg_sound_3v3>;
        pvdd-suply = <&amp_supplay_reg>;
		status = "okay";
	};
};

[Bio_TICFSL]

Hello,

Do you have connected the board to this cards? You need to build the dtb and kernel to enable the device tree and know if the module if working.

Regards