2397822_en-US

[#1]

asoc-simple-card: parse error after upgrading to kernel 6.18.x

Hi,

here is my working DT for Kernel 6.6.52:

/ {
codec: max98357a@0{
        compatible = "maxim,max98357a";
        #sound-dai-cells = <0>;
        pinctrl-names = "default";
        pinctrl-0 = <&sdmode_en>;
        sdmode-gpios = <&gpio4 28 GPIO_ACTIVE_HIGH>;
        status = "okay";
    };

    sound {
        compatible = "simple-audio-card";

        simple-audio-card,name = "SAI3 MAX98357A";
        simple-audio-card,format = "i2s";
        simple-audio-card,widgets = "Speaker","Speakers";
        simple-audio-card,routing = "Speakers","Speaker";
        simple-audio-card,bitclock-master = <&cpu_dai>;
        simple-audio-card,frame-master = <&cpu_dai>;

        cpu_dai: simple-audio-card,cpu {
            sound-dai = <&sai3>;
            clocks = <&clk IMX8MP_CLK_SAI3>;
            clock-names = "mclk";
            //system-clock-frequency = <&clk IMX8MP_CLK_AUDIOMIX_SAI3_MCLK1>;
            dai-tdm-slot-num = <2>;
            dai-tdm-slot-width = <32>;
        };

        codec_dai: simple-audio-card,codec {
            sound-dai = <&codec>;
            //clocks = <&clk IMX8MP_CLK_SAI3>;
        };
    };
};
&sai3{
    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_sai3>;
    #sound-dai-cells = <0>;

    clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI3_IPG>,
             <&clk IMX8MP_CLK_DUMMY>,
             <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI3_MCLK1>,
             <&clk IMX8MP_CLK_DUMMY>,
             <&clk IMX8MP_CLK_DUMMY>,
             <&clk IMX8MP_AUDIO_PLL1_OUT>,
             <&clk IMX8MP_AUDIO_PLL2_OUT>;
    clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3", "pll8k", "pll11k";

    assigned-clocks = <&clk IMX8MP_CLK_SAI3>,
                      <&clk IMX8MP_AUDIO_PLL1>,
                      <&clk IMX8MP_AUDIO_PLL2>;

    assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL2_OUT>,
                             <&clk IMX8MP_AUDIO_PLL1_OUT>;
    // Try common MCLK rates that divide well to 48 kHz multiples
    // Option A: 24.576 MHz (very common for MAX98357A + 48 kHz)
    assigned-clock-rates = <24576000>,       // PLL2 for 48 kHz
                           <22579200>;       // PLL1 for 44.1 kHz

    // Option B (if 44.1 kHz needed later): use PLL1 + 22579200
    //assigned-clock-rates = <22579200>;
    fsl,sai-asynchronous;
    fsl,sai-mclk-direction-output;
    status = "okay";
};

After moving to kernel 6.18.20 SAI3 is not probing and I got no sound-card.

The boot log shows:
platform sound: deferred probe pending: asoc-simple-card: parse error

What changes in the DT syntax from kernel 6.6.52 to 6.18.x? I didn't find anything relevant. How can I investigate the parse error?

i.MX 8M | i.MX 8M Mini | i.MX 8M NanoLinuxYocto ProjectRe: asoc-simple-card: parse error after upgrading to kernel 6.18.x

Hello,

Could you please share your dmesg log?

Best regards.