Other Parts Discussed in Thread: AM3354
Hi,
We are using AM3354 with TLV320AIC3206 for audio recording and play.
We are able to play demo audio file(Rar_Center.wav) using aplay command and it looks perfect. But we are facing issues with arecord. we are able to record the data but it contains too much noise (record_8K_stereo_U8bit.wav). attached these wav files for your reference.
Here is the list of commands executed for testing. IN1_L and IN1_R are our lines of interest.
amixer -c AM335xRCU sset 'Mic PGA' on
amixer -c AM335xRCU sset 'CM_L to Left Mixer Negative Resistor' '10 kOhm'
amixer -c AM335xRCU sset 'CM_R to Right Mixer Negative Resistor' 'Off'
amixer -c AM335xRCU sset 'IN1_L to Left Mixer Positive Resistor' 'Off'
amixer -c AM335xRCU sset 'IN1_L to Right Mixer Negative Resistor' 'Off'
amixer -c AM335xRCU sset 'IN1_R to Left Mixer Positive Resistor' '40 kOhm'
amixer -c AM335xRCU sset 'IN1_R to Right Mixer Positive Resistor' 'Off'
amixer -c AM335xRCU sset 'IN2_L to Left Mixer Positive Resistor' 'Off'
amixer -c AM335xRCU sset 'IN2_L to Right Mixer Positive Resistor' 'Off'
amixer -c AM335xRCU sset 'IN2_R to Left Mixer Negative Resistor' 'Off'
amixer -c AM335xRCU sset 'IN2_R to Right Mixer Positive Resistor' 'Off'
amixer -c AM335xRCU sset 'IN3_L to Left Mixer Positive Resistor' 'Off'
amixer -c AM335xRCU sset 'IN3_L to Right Mixer Negative Resistor' 'Off'
amixer -c AM335xRCU sset 'IN3_R to Left Mixer Negative Resistor' 'Off'
amixer -c AM335xRCU sset 'IN3_R to Right Mixer Positive Resistor' 'Off'
amixer -c AM335xRCU sset 'ADC Level' 64
amixer -c AM335xRCU sset 'AGC Max PGA' 50
amixer -c AM335xRCU sset 'AGC Target Level' 0
amixer -c AM335xRCU sset 'ADCFGA Left Mute' off
amixer -c AM335xRCU sset 'ADCFGA Right Mute' on
amixer -c AM335xRCU sset 'AGC Noise Threshold' 31
amixer -c AM335xRCU sset 'AGC Noise Debounce' 0
amixer -c AM335xRCU sset 'AGC Gain Hysteresis' 0
amixer -c AM335xRCU sset 'AGC Hysteresis' 0
amixer -c AM335xRCU sset 'AGC Signal Debounce' 15
Also attached dts configurations here.
&i2c0 {
pinctrl-names = "default";
pinctrl-0 = <&i2c0_pins>;
status = "okay";
clock-frequency = <400000>;
tlv320aic3206: tlv320aic3206@18 {
#sound-dai-cells = <0>;
compatible = "ti,tlv320aic32x6";
reg = <0x18>;
clocks = <&sys_clkin_ck>;
clock-names = "mclk";
reset-gpios = <&gpio3 7 GPIO_ACTIVE_HIGH>;
aic32x4-gpio-func= <
0xff / AIC32X4_MFPX_DEFAULT_VALUE /
0xff / AIC32X4_MFPX_DEFAULT_VALUE /
0x04 / MFP3 AIC32X4_MFP3_GPIO_ENABLED /
0xff / AIC32X4_MFPX_DEFAULT_VALUE /
0x08 / MFP5 AIC32X4_MFP5_GPIO_INPUT /
>;
ldoin-supply = <&vddio_reg>;
iov-supply = <&vddio_reg>;
dv-supply = <&vddio_reg>;
av-supply = <&vddio_reg>;
};
};
sound {
compatible = "simple-audio-card";
simple-audio-card,name = "AM335x-RCU";
simple-audio-card,widgets =
"Microphone", "Microphone Jack",
"Headphone", "Headphone Jack",
"Speaker", "External Speaker",
"Microphone", "Handset Mic";
simple-audio-card,routing =
"IN3_L", "Microphone Jack",
"Headphone Jack", "HPL",
"Headphone Jack", "HPR",
"External Speaker", "LOL",
"External Speaker", "LOR",
"Handset Mic", "Mic Bias";
simple-audio-card,format = "i2s";
simple-audio-card,bitclock-master = <&cpu_master>;
simple-audio-card,frame-master = <&cpu_master>;
cpu_master: simple-audio-card,cpu {
sound-dai = <&mcasp0>;
system-clock-frequency = <24576000>;
system-clock-id = <1>;//<MCASP_CLK_HCLK_AHCLK>;
};
sound_master: simple-audio-card,codec {
sound-dai = <&tlv320aic3206>;
system-clock-frequency = <24576000>; //Codec generates 24567000 from mclk 24Mhz and FLL settings)
system-clock-id = <1>;
};
};
We also probed and verified MCLK frequency of 24MHz.
Eagerly waiting for your support.
Thank You,
Naveen G S
