i.MX Processorsのトピックasoc-simple-card: parse error after upgrading to kernel 6.18.x

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

MicMoba — Wed, 22 Jul 2026 13:19:48 GMT

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?

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

JorgeCas — Wed, 22 Jul 2026 20:44:45 GMT

Hello,

Could you please share your dmesg log?

Best regards.

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

MicMoba — Fri, 24 Jul 2026 04:03:31 GMT

Hi Jorge,

dmesg log and running device tree (./dtc -I fs -O dts /proc/device-tree > /tmp/running.dts) attached.

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

MicMoba — Mon, 27 Jul 2026 13:01:34 GMT

Hi,

I have moved one step forward. After enabling the kernel configuration option CONFIG_IMX_AIPSTZ=y, the sound card device is now available.

Because sai3 node is a sub node of aips5 I also had to enable aips5 in my devicetree:

&aips5 { status = "okay"; };

Now I got the following error messages:

[ 13.081746] fsl-sai 30c30000.sai: ASoC error (-110): at snd_soc_dai_hw_params() on sai-tx-rx [ 13.090223] sai-tx-rx-HiFi: ASoC error (-110): at __soc_pcm_hw_params() on sai-tx-rx-HiFi

speaker-test -c 2 -r 48000 -t sine 2>&1 | head -20 [ 31.368187] fsl-sai 30c30000.sai: ASoC error (-110): at snd_soc_dai_hw_params() on sai-tx-rx [ 31.376682] sai-tx-rx-HiFi: ASoC error (-110): at __soc_pcm_hw_params() on sai-tx-rx-HiFi Unable to set hw params for playback: Connection timed out speaker-test 1.2.11 Playback device is default Stream parameters are 48000Hz, S16_LE, 2 channels Sine wave rate is 440.0000Hz Rate set to 48000Hz (requested 48000Hz) Buffer size range from 24 to 131072 Period size range from 12 to 16383 Periods = 4 Setting of hwparams failed: Connection timed out

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

MicMoba — Tue, 28 Jul 2026 04:11:21 GMT

I got it, sound is working.

My kernel configs:

CONFIG_SND_IMX_SOC=m CONFIG_SND_IMX_SOC=m CONFIG_SND_SOC_FSL_SAI=m CONFIG_SND_SOC_FSL_UTILS=m CONFIG_IMX_AIPSTZ=y

The devicetree part:

/{ 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"; status = "okay"; simple-audio-card,name = "SAI3 MAX98357A"; simple-audio-card,format = "i2s"; simple-audio-card,widgets = "Speaker", "Speaker Ext"; simple-audio-card,routing = "Speaker Ext", "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>; }; }; }; &sdma2 { status = "okay"; fsl,sdma-ram-script-name = "imx/sdma/sdma-imx7d.bin"; }; &aips5 { status = "okay"; }; &audio_blk_ctrl { status = "okay"; assigned-clocks = <&clk IMX8MP_AUDIO_PLL1>, <&clk IMX8MP_AUDIO_PLL2>; assigned-clock-rates = <393216000>, <361267200>; }; &sai3{ pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sai3>; #sound-dai-cells = <0>; assigned-clocks = <&clk IMX8MP_CLK_SAI3>; assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>; assigned-clock-rates = <12288000>; clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI3_IPG>, <&clk IMX8MP_CLK_DUMMY>, <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI3_MCLK1>, <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI3_MCLK2>, <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI3_MCLK3>; clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3"; dmas = <&sdma2 4 2 0>, <&sdma2 5 2 0>; dma-names = "rx", "tx"; fsl,sai-asynchronous; fsl,sai-mclk-direction-output; status = "okay"; };

The devicetree base is imx8mp.dtsi