Hi ST Team,
We have developed a board based on the STM32MP257F. Currently, I am focusing on the audio section. We use an I2S port to connect to a codec called ES8388 chip. You can find the schematic in the attached picture,
the connection between ES8388 and STM32MP25 like the following path,
I2S2_MCK --- PI15
I2S2_CK --- PB0
I2S2_SDO -- PK1
I2S2_WS --- PI14
I2S2_SDI --- PB6
I modified the dts, like the following code show,
/ {
es8388: es8388@11 {
compatible = "everest,es8388";
reg = <0x11>;
#sound-dai-cells = <0>;
clocks = <&i2s2>; /* The codec is a consumer of I2S2 master clock */
clock-names = "MCLK"; /* Feed MCLK codec clock with I2S2 master clock provider */
status = "okay";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
es8388_in: endpoint {
remote-endpoint = <&i2s2_endpoint>;
};
};
};
};
};
&i2s2_pins_a {
pins1 {
pinmux = <STM32_PINMUX('K', 1, AF2)>, /* I2S2_SDO */
<STM32_PINMUX('B', 6, AF2)>, /* I2S2_SDI */
<STM32_PINMUX('I', 14, AF2)>, /* I2S2_WS */
<STM32_PINMUX('B', 0, AF2)>, /* I2S2_CK */
<STM32_PINMUX('I', 15, AF2)>; /* I2S2_MCK */
slew-rate = <1>;
drive-push-pull;
bias-disable;
};
};
&i2s2_sleep_pins_a {
pins {
pinmux = <STM32_PINMUX('K', 1, ANALOG)>, /* I2S2_SDO */
<STM32_PINMUX('B', 6, ANALOG)>, /* I2S2_SDI */
<STM32_PINMUX('I', 14, ANALOG)>, /* I2S2_WS */
<STM32_PINMUX('B', 0, ANALOG)>, /* I2S2_CK */
<STM32_PINMUX('I', 15, ANALOG)>; /* I2S2_MCK */
};
};
&i2s2 {
#clock-cells = <0>; /* Set I2S2 as master clock provider */
pinctrl-names = "default", "sleep";
pinctrl-0 = <&i2s2_pins_a>;
pinctrl-1 = <&i2s2_sleep_pins_a>;
status = "okay";
i2s2_port: port {
i2s2_endpoint: endpoint {
remote-endpoint = <&es8388_in>;
format = "i2s";
mclk-fs = <256>; /* Set mclk/fs radio. (256 or 512)*/
};
};
};
&i2c2 {
es8388: es8388@11 {
compatible = "everest,es8388";
reg = <0x11>;
#sound-dai-cells = <0>;
clocks = <&i2s2>; /* The codec is a consumer of I2S2 master clock */
clock-names = "MCLK"; /* Feed MCLK codec clock with I2S2 master clock provider */
status = "okay";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
es8388_in: endpoint {
remote-endpoint = <&i2s2_endpoint>;
};
};
};
};
};View more
I rebuilt the kernel and download it to board, I can recognized the audio card by using "aplay -l" command and also can play audio with rate 16000Hz,
root@stm32mp2:~# aplay test1.wav
Playing WAVE 'test1.wav' : Signed 16 bit Little Endian, Rate 16000 Hz, Mono
but when I play one audio with rate 22050Hz, the error occured,
root@stm32mp2:~# aplay test2.wav
Playing WAVE 'test2.wav' : Signed 16 bit Little Endian, Rate 22050 Hz, Mono
[ 198.334255] st,stm32-i2s 400b0000.audio-controller: Failed to find an accurate rate
[ 198.336312] st,stm32-i2s 400b0000.audio-controller: ASoC: error at snd_soc_dai_set_sysclk on 400b0000.audio-controller: -22
[ 198.347840] 400b0000.audio-controller-es8328-hifi-analog: ASoC: error at snd_soc_link_hw_params on 400b0000.audio-controller-es8328-hifi-analog: -22
[ 198.361021] 400b0000.audio-controller-es8328-hifi-analog: ASoC: error at __soc_pcm_hw_params on 400b0000.audio-controller-es8328-hifi-analog: -22
[ 203.384524] st,stm32-i2s 400b0000.audio-controller: Failed to find an accurate rate
[ 203.386627] st,stm32-i2s 400b0000.audio-controller: ASoC: error at snd_soc_dai_set_sysclk on 400b0000.audio-controller: -22
[ 203.398530] 400b0000.audio-controller-es8328-hifi-analog: ASoC: error at snd_soc_link_hw_params on 400b0000.audio-controller-es8328-hifi-analog: -22
[ 203.411318] 400b0000.audio-controller-es8328-hifi-analog: ASoC: error at __soc_pcm_hw_params on 400b0000.audio-controller-es8328-hifi-analog: -22
and rate 44100hz also has error,
root@stm32mp2:~# aplay test3.wav
Playing WAVE 'test3.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Mono
[ 132.343536] st,stm32-i2s 400b0000.audio-controller: Failed to find an accurate rate
[ 132.345630] st,stm32-i2s 400b0000.audio-controller: ASoC: error at snd_soc_dai_set_sysclk on 400b0000.audio-controller: -22
[ 132.356832] 400b0000.audio-controller-es8328-hifi-analog: ASoC: error at snd_soc_link_hw_params on 400b0000.audio-controller-es8328-hifi-analog: -22
[ 132.370390] 400b0000.audio-controller-es8328-hifi-analog: ASoC: error at __soc_pcm_hw_params on 400b0000.audio-controller-es8328-hifi-analog: -22
[ 137.389972] st,stm32-i2s 400b0000.audio-controller: Failed to find an accurate rate
[ 137.392105] st,stm32-i2s 400b0000.audio-controller: ASoC: error at snd_soc_dai_set_sysclk on 400b0000.audio-controller: -22
[ 137.403519] 400b0000.audio-controller-es8328-hifi-analog: ASoC: error at snd_soc_link_hw_params on 400b0000.audio-controller-es8328-hifi-analog: -22
[ 137.416918] 400b0000.audio-controller-es8328-hifi-analog: ASoC: error at __soc_pcm_hw_params on 400b0000.audio-controller-es8328-hifi-analog: -22
Can someone help check what happened? Did I miss something?
