I am implementing a SGTL5000 codec on a custom board. I previously had used the Fe-Pi breakout board for testing and it worked great. Unfortunately I had to change a few data buses and am now receiving several errors during startup:
[ 16.568015] sgtl5000 2-000a: sgtl5000_pcm_hw_params: set sysclk first!
[ 16.574626] sgtl5000 2-000a: ASoC: can't set sgtl5000 hw params: -14
[ 16.582483] tegra-asoc: sound: ASoC: PRE_PMU: x Capture-I2S4 DAP Receive event failed: -14
[ 16.678957] tegra210-i2s tegra210-i2s.3: Failed at I2S4 DAP RX sw reset
[ 16.685602] tegra210-i2s tegra210-i2s.3: ASoC: PRE_PMU: I2S4 DAP RX event failed: -22
The driver is able to register the codec at 0x0A as verified through i2cdetect. I have tried to look up what these errors mean but haven’t had much success. The codec receives MCLK through a 12.288MHz oscillator which I have verified. I have also verified that the codec is successfully outputting 48kHz on the LRCLK line and 3.072MHz on the SCLK line.
The I2S bus is connected to i2s4 and the I2C is connected to i2c3.
The relevant portions of my device tree are:
clocks {
sgtl5000_mclk: sgtl5000_mclk {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <12288000>;
clock-output-names = "sgtl5000-mclk";
status = "okay";
};
};
...
sound {
...
nvidia,audio-routing =
"x Headphone", "x HP_OUT",
"x MIC_IN", "x Mic",
"x ADC", "x Mic Bias",
"x LINE_IN", "x Line In",
"x Line Out", "x LINE_OUT";
...
nvidia,dai-link-1 {
link-name = "sgtl5000-codec";
cpu-dai = <0x53>;
codec-dai = <&sgtl5000>;
cpu-dai-name = "I2S4";
codec-dai-name = "sgtl5000";
format = "i2s";
bitclock-master;
frame-master;
bitclock-noninversion;
frame-noninversion;
bit-format = "s16_le";
srate = <0xbb80>;
num-channel = <0x2>;
ignore_suspend;
name-prefix = [78 00];
status = "okay";
};
};
...
i2c@7000c500 {
...
sgtl5000: sgtl5000@0a {
compatible = "fsl,sgtl5000";
reg = <0x0a>;
clocks = <&sgtl5000_mclk>;
micbias-resistor-k-ohms = <2>;
micbias-voltage-m-volts = <3000>;
VDDA-supply = <0x4c>;
VDDIO-supply = <0xa8>;
status = "okay";
};
};
pinmux@700008d4 {
...
common {
...
dap4_din_pj5 { //I2S0_DIN pin 195
nvidia,pins = "dap4_din_pj5";
nvidia,function = "i2s4b";
nvidia,pull = <0x0>;
nvidia,tristate = <0x0>;
nvidia,enable-input = <0x1>;
};
dap4_dout_pj6 { //I2S0_DOUT pin 193
nvidia,pins = "dap4_dout_pj6";
nvidia,function = "i2s4b";
nvidia,pull = <0x0>;
nvidia,tristate = <0x0>;
nvidia,enable-input = <0x1>;
};
dap4_fs_pj4 { //I2S0_LRCK pin 197
nvidia,pins = "dap4_fs_pj4";
nvidia,function = "i2s4b";
nvidia,pull = <0x0>;
nvidia,tristate = <0x0>;
nvidia,enable-input = <0x1>;
};
dap4_sclk_pj7 { //I2S0_SCLK pin 199
nvidia,pins = "dap4_sclk_pj7";
nvidia,function = "i2s4b";
nvidia,pull = <0x0>;
nvidia,tristate = <0x0>;
nvidia,enable-input = <0x1>;
};
I haven’t modified the drivers at all, I was hoping to avoid that if possible.