Thanks for your reply. I'm now getting audio output from the headphone, but the sound level is very low/quiet even with all volumes set to maximum in amixer (Amplitude is low). The output sounds more like noise rather than clear audio.
here the dts for Sound Card.
sound {
compatible = "simple-audio-card";
simple-audio-card,name = "stm32mp1-sgtl5000";
simple-audio-card,format = "i2s";
simple-audio-card,bitclock-master = <&cpu_dai>;
simple-audio-card,frame-master = <&cpu_dai>;
simple-audio-card,mclk-fs = <256>;
simple-audio-card,widgets =
"Microphone", "Mic Jack",
"Headphone", "Headphone Jack",
"Line", "Line In Jack",
"Line", "Line Out Jack";
simple-audio-card,routing =
"Mic Jack", "MIC_IN",
"Headphone Jack", "HP_OUT",
"Line In Jack", "LINE_IN",
"Line Out Jack", "LINE_OUT";
cpu_dai: simple-audio-card,cpu {
sound-dai = <&sai1a>;
};
codec_dai: simple-audio-card,codec {
sound-dai = <&sgtl5000>;
};
};
sai
&pinctrl {
sai1_pins_a: sai1-0 {
pins {
pinmux = <STM32_PINMUX('A', 4, AF12)>, /* SAI1_SCK_A */
<STM32_PINMUX('A', 0, AF6)>, /* SAI1_SD_B */
<STM32_PINMUX('A', 5, AF6)>, /* SAI1_SD_A */
<STM32_PINMUX('F', 11, AF6)>, /* SAI1_FS_A */
<STM32_PINMUX('D', 13, AF6)>; /* SAI1_MCKA */
slew-rate = <0>;
drive-push-pull;
bias-disable;
};
};
sai1_sleep_pins_a: sai1-sleep-0 {
pins {
pinmux = <STM32_PINMUX('A', 4, ANALOG)>, /* SAI1_SCK_A */
<STM32_PINMUX('A', 0, ANALOG)>, /* SAI1_SD_B */
<STM32_PINMUX('A', 5, ANALOG)>, /* SAI1_SD_A */
<STM32_PINMUX('F', 11, ANALOG)>, /* SAI1_FS_A */
<STM32_PINMUX('D', 13, ANALOG)>; /* SAI1_MCKA */
};
};
};
&sai1 {
status = "okay";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&sai1_pins_a>;
pinctrl-1 = <&sai1_sleep_pins_a>;
clock-names = "pclk", "x8k", "x11k";
clocks = <&rcc SAI1>, <&scmi_clk CK_SCMI_PLL3_Q>, <&scmi_clk CK_SCMI_PLL3_R>;
assigned-clocks = <&rcc SAI1_K>;
assigned-clock-parents = <&scmi_clk CK_SCMI_PLL3_Q>;
assigned-clock-rates = <12288000>;
sai1a: audio-controller@4400a004 {
compatible = "st,stm32-sai-sub-a";
reg = <0x4 0x20>;
status = "okay";
#sound-dai-cells = <0>;
clocks = <&rcc SAI1_K>;
clock-names = "sai_ck";
#clock-cells = <0>;
clock-output-names = "sai1a_mclk";
dmas = <&dmamux1 87 0x400 0x01>;
dma-names = "tx";
};
sai1b: audio-controller@4400a024 {
compatible = "st,stm32-sai-sub-b";
reg = <0x24 0x20>;
status = "okay";
#sound-dai-cells = <0>;
clocks = <&rcc SAI1_K>;
clock-names = "sai_ck";
dmas = <&dmamux1 88 0x400 0x01>;
dma-names = "rx";
};
};i2c Codec.
sgtl5000: codec@0a {
compatible = "fsl,sgtl5000";
reg = <0x0a>;
status = "okay";
#sound-dai-cells = <0>;
/* Power rails */
VDDA-supply = <&scmi_v3v3_sw>;
VDDIO-supply = <&scmi_v3v3_sw>;
VDDD-supply = <&scmi_v1v8_periph>;
clocks = <&sai1a>;
clock-names = "mclk";
};
Mclk , lrclk,Bclk are getting properly. is there any changes in device tree ??
