I2S MCLK on Core-3399-JD4

Chip Platform Rockchip
1

Hi!

I’m trying to use I2S1 on Firefly Core-3399-JD4 with TLV320AIC3100 codec. This is how I describe it in the dts:

/ {
  tlv320aic31xx-sound {
    compatible = "simple-audio-card";
    status = "okay";
    simple-audio-card,format = "i2s";
    simple-audio-card,name = "rockchip,tlv320aic31xx-codec";
    simple-audio-card,widgets =
                            "Microphone", "Mic Jack",
    "Headphone", "Headphone Jack";
    simple-audio-card,routing =
    "Mic Jack", "MICBIAS1",
    "IN1P", "Mic Jack",
    "Headphone Jack", "HPOL",
    "Headphone Jack", "HPOR";

    simple-audio-card,cpu {
      sound-dai = <&i2s1>;
      format = "i2s";
    };
    simple-audio-card,codec {
      sound-dai = <&tlv320aic3100>;
      format = "i2s";
    };
  };
};
&i2c1 {
  tlv320aic3100: tlv320aic3100@18 {
    #sound-dai-cells = <0>;
    compatible = "ti,tlv320aic3100";
    reg = <0x18>;
    status = "okay";

    HPVDD-supply = <&vcc3v3_sys>;
    SPRVDD-supply = <&vcc5v0_host>;
    SPLVDD-supply = <&vcc5v0_host>;
    AVDD-supply = <&vcc3v3_sys>;
    IOVDD-supply = <&vcca1v8_codec>;
    DVDD-supply = <&vcca1v8_codec>;
  };
};

The drivers starts without errors and I can see audio device in aplay -l output, but there is no sound and I can’t see the clocks on MCLK pin. How can I get MCLK on?

2

You need to specify clock, take rt5640 as an example:

&i2c1 {
        status = "okay";
        i2c-scl-rising-time-ns = <300>;
        i2c-scl-falling-time-ns = <15>;

        rt5640: rt5640@1c {
                #sound-dai-cells = <0>;
                compatible = "realtek,rt5640";
                reg = <0x1c>;
                clocks = <&cru SCLK_I2S_8CH_OUT>;
                clock-names = "mclk";
                realtek,in1-differential;
                pinctrl-names = "default";
                pinctrl-0 = <&rt5640_hpcon &i2s_8ch_mclk>;
                hp-con-gpio = <&gpio4 21 GPIO_ACTIVE_HIGH>;
                //hp-det-gpio = <&gpio4 28 GPIO_ACTIVE_LOW>;
                io-channels = <&saradc 4>;
                hp-det-adc-value = <500>;
        };
}
3

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