i2s0 I/O Configure dts

[FelSM]

Hello, community. For a while now, I've been trying to configure the input and output of i2s0 without success. The closest I've come to a result was with the adau7002 configuration, but I'm experiencing synchronous noise, as if the issue were related to a CLK. Let me provide some details to see if anyone can guide me.

I have a Banana Pi M2 with Armbian 23.11.1 Bookworm and Linux 6.1.13-current-sunxi. I have a pcm1807 connected to the input, configured with SPI, outputting i2s left justified in 24bit, and operating as a master. The pcm is connected to a 24.5MHz crystal.

My goal is to configure the system to capture audio in a generic i2s format and then play it back in the same way through the output, as I have an amplifier connected to it.

My other question is whether it's possible to reconfigure the pins using an overlay. Currently, my pin configuration is as follows:

PA10 = LRCLK

PA16 = BCLK

PA20 = SDI

PA21 = SDO

i tried reconfigure the pins but i couldn't ☹️

 

I am attaching the adau7002.dts to provide additional information:

 

/dts-v1/;
/plugin/;

/ {
    compatible = "allwinner,sun8i-h3";

    fragment@0 {
        target-path = "/";
        __overlay__ {
            adau7002_codec: adau7002_codec {
                #sound-dai-cells = <0>;
                compatible = "adi,adau7002";
                status = "okay";
            };
        };
    };

 

    fragment@1 {
        target = <&i2s0>;
        __overlay__ {
            status = "okay";
            pinctrl-0 = <&i2s0_pins>;
            sound-dai = <&adau7002_codec>;
            pinctrl-names = "default";
        };
    };

    fragment@2 {
        target-path = "/";
        __overlay__ {
            sound_i2s {
            compatible = "simple-audio-card";
            simple-audio-card,format = "i2s";
            simple-audio-card,name = "adau7002";
        #simple-audio-card,dai-link = "left_j";
            simple-audio-card,bitclock-slave = <&dailink0_slave>; 
            simple-audio-card,frame-slave = <&dailink0_slave>; 
            simple-audio-card,mclk-fs = <512>;

            simple-audio-card,widgets = 
                    "Line", "Line In Jack"; 

            simple-audio-card,routing =
                    "PDM_DAT", "Line In Jack";

            status = "okay";
            simple-audio-card,cpu {
                sound-dai = <&i2s0>;
            };
            dailink0_slave: simple-audio-card,codec {
                sound-dai = <&adau7002_codec>;

            };
            };
        };
    };
};
 

 

I use for capture this command: "arecord -D hw:0,0 -f S16_LE -t wav -r 48000 -c 2 -d 10 -V stereo -v >test.wav". But when I want to switch S16_LE to S24_LE you can hardly hear anything, although the noise persists with both formats

Edited December 12, 2023 by FelSM