I2S MCLK on Core-3399-JD4

alex.mamonov

Hi!

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

1. / {
   
2.   tlv320aic31xx-sound {
   
3.     compatible = "simple-audio-card";
   
4.     status = "okay";
   
5.     simple-audio-card,format = "i2s";
   
6.     simple-audio-card,name = "rockchip,tlv320aic31xx-codec";
   
7.     simple-audio-card,widgets =
   
8.                             "Microphone", "Mic Jack",
   
9.     "Headphone", "Headphone Jack";
   
10.     simple-audio-card,routing =
    
11.     "Mic Jack", "MICBIAS1",
    
12.     "IN1P", "Mic Jack",
    
13.     "Headphone Jack", "HPOL",
    
14.     "Headphone Jack", "HPOR";
    
15.   
    
16.     simple-audio-card,cpu {
    
17.       sound-dai = <&i2s1>;
    
18.       format = "i2s";
    
19.     };
    
20.     simple-audio-card,codec {
    
21.       sound-dai = <&tlv320aic3100>;
    
22.       format = "i2s";
    
23.     };
    
24.   };
    
25. };
    
26. &i2c1 {
    
27.   tlv320aic3100: tlv320aic3100@18 {
    
28.     #sound-dai-cells = <0>;
    
29.     compatible = "ti,tlv320aic3100";
    
30.     reg = <0x18>;
    
31.     status = "okay";
    
32. 
    
33.     HPVDD-supply = <&vcc3v3_sys>;
    
34.     SPRVDD-supply = <&vcc5v0_host>;
    
35.     SPLVDD-supply = <&vcc5v0_host>;
    
36.     AVDD-supply = <&vcc3v3_sys>;
    
37.     IOVDD-supply = <&vcca1v8_codec>;
    
38.     DVDD-supply = <&vcca1v8_codec>;
    
39.   };
    
40. };
    

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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?

penguin

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

1. &i2c1 {
   
2.         status = "okay";
   
3.         i2c-scl-rising-time-ns = <300>;
   
4.         i2c-scl-falling-time-ns = <15>;
   
5. 
   
6.         rt5640: rt5640@1c {
   
7.                 #sound-dai-cells = <0>;
   
8.                 compatible = "realtek,rt5640";
   
9.                 reg = <0x1c>;
   
10.                 clocks = <&cru SCLK_I2S_8CH_OUT>;
    
11.                 clock-names = "mclk";
    
12.                 realtek,in1-differential;
    
13.                 pinctrl-names = "default";
    
14.                 pinctrl-0 = <&rt5640_hpcon &i2s_8ch_mclk>;
    
15.                 hp-con-gpio = <&gpio4 21 GPIO_ACTIVE_HIGH>;
    
16.                 //hp-det-gpio = <&gpio4 28 GPIO_ACTIVE_LOW>;
    
17.                 io-channels = <&saradc 4>;
    
18.                 hp-det-adc-value = <500>;
    
19.         };
    
20. }

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