Hello NVIDIA engineers.
I’m debugging the SGTL5000 audio chip on a Jetson Thor R38.4, but I can’t get any audio output. Could you please offer some advice?
I’m following the same debugging approach I used on the Orin Nano, but it’s not working.：
SGTL5000 cannot output audio - Jetson Systems / Jetson Orin NX - NVIDIA Developer Forums
dts:
ahub@9630000 {
status = "okay";
/* tegra_i2s1 */
i2s@9280000 {
status = "okay";
ports {
i2s1_port: port@1 {
reg = <1>;
i2s1_dap: endpoint {
dai-format = "i2s";
bitclock-master;
frame-master;
remote-endpoint = <&sgtl5000_ep>;
};
};
};
};
/* i2c11 */
i2c@810c6c0000 {
status = "okay";
#address-cells = <1>;
#size-cells = <0>;
sgtl5000: sgtl5000@0a {
compatible = "fsl,sgtl5000";
reg = <0x0a>;
clocks = <&bpmp TEGRA264_CLK_AUD_MCLK>;
clock-names = "mclk";
micbias-resistor-k-ohms = <2>;
micbias-voltage-m-volts = <1750>;
VDDA-supply = <&vdd_1v8_cvb>;
VDDIO-supply = <&vdd_1v8_cvb>;
VDDD-supply = <&vdd_1v8_cvb>;
status = "okay";
sound-name-prefix = "H40-SGTL";
port {
sgtl5000_ep: endpoint {
link-name = "fe-pi-audio-z-v2";
remote-endpoint = <&i2s1_dap>;
mclk-fs = <256>;
};
};
};
sound {
status = "okay";
dais = /* ADMAIF (FE) Ports */
<&admaif0_port>, <&admaif1_port>, <&admaif2_port>, <&admaif3_port>,
<&admaif4_port>, <&admaif5_port>, <&admaif6_port>, <&admaif7_port>,
<&admaif8_port>, <&admaif9_port>, <&admaif10_port>, <&admaif11_port>,
<&admaif12_port>, <&admaif13_port>, <&admaif14_port>, <&admaif15_port>,
<&admaif16_port>, <&admaif17_port>, <&admaif18_port>, <&admaif19_port>,
<&admaif20_port>, <&admaif21_port>, <&admaif22_port>, <&admaif23_port>,
<&admaif24_port>, <&admaif25_port>, <&admaif26_port>, <&admaif27_port>,
<&admaif28_port>, <&admaif29_port>, <&admaif30_port>, <&admaif31_port>,
/* XBAR Ports */
<&xbar_i2s1_port>, <&xbar_i2s4_port>,
<&xbar_sfc1_in_port>, <&xbar_sfc2_in_port>,
<&xbar_sfc3_in_port>, <&xbar_sfc4_in_port>,
<&xbar_mvc1_in_port>, <&xbar_mvc2_in_port>,
<&xbar_amx1_in1_port>, <&xbar_amx1_in2_port>,
<&xbar_amx1_in3_port>, <&xbar_amx1_in4_port>,
<&xbar_amx2_in1_port>, <&xbar_amx2_in2_port>,
<&xbar_amx2_in3_port>, <&xbar_amx2_in4_port>,
<&xbar_amx3_in1_port>, <&xbar_amx3_in2_port>,
<&xbar_amx3_in3_port>, <&xbar_amx3_in4_port>,
<&xbar_amx4_in1_port>, <&xbar_amx4_in2_port>,
<&xbar_amx4_in3_port>, <&xbar_amx4_in4_port>,
<&xbar_amx5_in1_port>, <&xbar_amx5_in2_port>,
<&xbar_amx5_in3_port>, <&xbar_amx5_in4_port>,
<&xbar_amx6_in1_port>, <&xbar_amx6_in2_port>,
<&xbar_amx6_in3_port>, <&xbar_amx6_in4_port>,
<&xbar_adx1_in_port>, <&xbar_adx2_in_port>,
<&xbar_adx3_in_port>, <&xbar_adx4_in_port>,
<&xbar_adx5_in_port>, <&xbar_adx6_in_port>,
<&xbar_mix_in1_port>, <&xbar_mix_in2_port>,
<&xbar_mix_in3_port>, <&xbar_mix_in4_port>,
<&xbar_mix_in5_port>, <&xbar_mix_in6_port>,
<&xbar_mix_in7_port>, <&xbar_mix_in8_port>,
<&xbar_mix_in9_port>, <&xbar_mix_in10_port>,
<&xbar_asrc_in1_port>, <&xbar_asrc_in2_port>,
<&xbar_asrc_in3_port>, <&xbar_asrc_in4_port>,
<&xbar_asrc_in5_port>, <&xbar_asrc_in6_port>,
<&xbar_asrc_in7_port>,
<&xbar_ope1_in_port>,
/* HW accelerators */
<&sfc1_out_port>, <&sfc2_out_port>,
<&sfc3_out_port>, <&sfc4_out_port>,
<&mvc1_out_port>, <&mvc2_out_port>,
<&amx1_out_port>, <&amx2_out_port>,
<&amx3_out_port>, <&amx4_out_port>,
<&amx5_out_port>, <&amx6_out_port>,
<&adx1_out1_port>, <&adx1_out2_port>,
<&adx1_out3_port>, <&adx1_out4_port>,
<&adx2_out1_port>, <&adx2_out2_port>,
<&adx2_out3_port>, <&adx2_out4_port>,
<&adx3_out1_port>, <&adx3_out2_port>,
<&adx3_out3_port>, <&adx3_out4_port>,
<&adx4_out1_port>, <&adx4_out2_port>,
<&adx4_out3_port>, <&adx4_out4_port>,
<&adx5_out1_port>, <&adx5_out2_port>,
<&adx5_out3_port>, <&adx5_out4_port>,
<&adx6_out1_port>, <&adx6_out2_port>,
<&adx6_out3_port>, <&adx6_out4_port>,
<&mix_out1_port>, <&mix_out2_port>, <&mix_out3_port>,
<&mix_out4_port>, <&mix_out5_port>,
<&asrc_out1_port>, <&asrc_out2_port>, <&asrc_out3_port>,
<&asrc_out4_port>, <&asrc_out5_port>, <&asrc_out6_port>,
<&ope1_out_port>,
/* BE I/O Ports */
<&i2s1_port>, <&i2s4_port>;
assigned-clocks = <&bpmp TEGRA264_CLK_PLLA1>, <&bpmp TEGRA264_CLK_PLLA1_OUT1>, <&bpmp TEGRA264_CLK_AUD_MCLK>;
assigned-clock-parents = <0>, <&bpmp TEGRA264_CLK_PLLA1>, <&bpmp TEGRA264_CLK_PLLA1_OUT1>;
assigned-clock-rates = <0>, <12288000>;
// assigned-clocks = <&bpmp TEGRA264_CLK_AUD_MCLK>;
// assigned-clock-rates = <12288000>; // 12.288 MHz 用于 48kHz 采样率
label = "NVIDIA Jetson Thor AGX APE";
nvidia-audio-card,widgets =
"Headphone", "H40-SGTL Headphone",
"Microphone", "H40-SGTL Mic",
"Line", "H40-SGTL Line In",
"Line", "H40-SGTL Line Out";
nvidia-audio-card,routing =
"H40-SGTL Playback", "I2S1 DAP-Playback",
"I2S1 DAP-Capture", "H40-SGTL Capture",
"H40-SGTL Headphone", "H40-SGTL HP_OUT",
"H40-SGTL MIC_IN", "H40-SGTL Mic",
"H40-SGTL ADC", "H40-SGTL Mic Bias",
"H40-SGTL LINE_IN", "H40-SGTL Line In",
"H40-SGTL Line Out", "H40-SGTL LINE_OUT";
nvidia-audio-card,mclk-fs = <256>;
};
kernel : tegra_codecs.c:
tegra_codecs_runtime_setup:
int tegra_codecs_runtime_setup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
.....................
rtd = get_pcm_runtime(card, "fe-pi-audio-z-v2");
if (rtd) {
for (unsigned int i = 0; i < rtd->dai_link->num_codecs; i++) {
if (!strcmp(rtd->dais[rtd->dai_link->num_cpus + i]->name,
"sgtl5000")) {
err = snd_soc_dai_set_sysclk(
rtd->dais[rtd->dai_link->num_cpus + i],
SGTL5000_SYSCLK, aud_mclk,
SND_SOC_CLOCK_IN);
if (err < 0) {
dev_err(card->dev,
"dais[%d] clock not set\n",
rtd->dai_link->num_cpus + i);
return err;
}
}
}
}
return 0;
}
dmesg: sudo dmesg | grep -E “sgtl5000|i2s|sound|i2c@810c6c0000”
nvidia@EATHA20:~$ sudo dmesg | grep -E "sgtl5000|i2s|sound|i2c@810c6c0000"
[ 0.120464] /bus@0/i2c@810c6c0000/sgtl5000@0a: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000/i2s@9280000
[ 0.121790] /bus@0/aconnect@9000000/ahub@9630000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000/i2s@92b0000
[ 0.121805] /bus@0/aconnect@9000000/ahub@9630000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000/i2s@9280000
[ 0.121835] /bus@0/aconnect@9000000/ahub@9630000/i2s@9280000: Fixed dependency cycle(s) with /bus@0/i2c@810c6c0000/sgtl5000@0a
[ 0.121867] /bus@0/aconnect@9000000/ahub@9630000/i2s@9280000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000
[ 0.121902] /bus@0/aconnect@9000000/ahub@9630000/i2s@92b0000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000
[ 0.129799] /bus@0/i2c@810c6c0000/sgtl5000@0a: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000/i2s@9280000
[ 7.635389] /bus@0/aconnect@9000000/ahub@9630000/i2s@9280000: Fixed dependency cycle(s) with /bus@0/i2c@810c6c0000/sgtl5000@0a
[ 7.641436] /bus@0/i2c@810c6c0000/sgtl5000@0a: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000/i2s@9280000
[ 7.995279] No soundcards found.
[ 14.365325] sgtl5000 11-000a: [sgtl5000] enable regulators.
[ 14.398246] sgtl5000 11-000a: [sgtl5000] enable regulators end.
[ 14.401698] sgtl5000 11-000a: sgtl5000 revision 0x11
[ 14.418722] sgtl5000 11-000a: [sgtl5000] probe done.
[ 14.750097] /bus@0/aconnect@9000000/ahub@9630000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000/i2s@92b0000
[ 14.750196] /bus@0/aconnect@9000000/ahub@9630000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000/i2s@9280000
[ 14.767785] /bus@0/aconnect@9000000/ahub@9630000/i2s@9280000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000
[ 14.767832] /bus@0/aconnect@9000000/ahub@9630000/i2s@92b0000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000
[ 14.888316] input: NVIDIA Jetson Thor AGX HDA HDMI/DP,pcm=3 as /devices/platform/bus@0/88090b0000.hda/sound/card0/input6
[ 14.932641] input: NVIDIA Jetson Thor AGX HDA HDMI/DP,pcm=7 as /devices/platform/bus@0/88090b0000.hda/sound/card0/input7
[ 14.962542] input: NVIDIA Jetson Thor AGX HDA HDMI/DP,pcm=8 as /devices/platform/bus@0/88090b0000.hda/sound/card0/input8
[ 14.974082] input: NVIDIA Jetson Thor AGX HDA HDMI/DP,pcm=9 as /devices/platform/bus@0/88090b0000.hda/sound/card0/input9
[ 15.080204] /bus@0/aconnect@9000000/ahub@9630000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000/i2s@9280000
[ 15.106230] /bus@0/aconnect@9000000/ahub@9630000/i2s@9280000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000
[ 15.109358] /bus@0/aconnect@9000000/ahub@9630000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000/i2s@92b0000
[ 15.109448] /bus@0/aconnect@9000000/ahub@9630000/i2s@92b0000: Fixed dependency cycle(s) with /bus@0/aconnect@9000000/ahub@9630000
[ 15.494649] sgtl5000 11-000a: [1] exceed max voltage vdda 1800000mV vddio 1800000mV vddd 1800000mV
[ 15.533441] tegra-audio-graph-card sound: Registered APE graph sound card with DPCM links for AHUB
[ 15.622694] tegra-mixer-controls sound:mixer-controls: Begin probe of override control device
[ 15.641739] tegra-mixer-controls sound:mixer-controls: Registered override controls for APE sound card
nvidia@EATHA20:~$
AUDIO_MCLK01:
I2S1_CLK:
I2S1_DOUT:
HP_R/L：
When playing audio, no signal is detected on the HP_R/L pins.
sudo cat /sys/kernel/debug/regmap/11-000a/registers：
nvidia@EATHA20:~$ sudo cat /sys/kernel/debug/regmap/11-000a/registers
000: a011
002: 0070
004: 0008
006: 0000
00a: 0110
00e: 0200
010: 9898
014: 015f
020: 0000
022: 1b1b
024: 0023
026: 0000
028: 0041
02a: 0020
02c: 0304
02e: 0f0f
030: 48fb
032: 5000
034: 0800
036: 0017
03a: 0000
03c: 0000
100: 0001
102: 0000
104: 0040
106: 051f
108: 0003
10a: 0040
10c: 0000
10e: 0000
110: 0000
116: 002f
118: 002f
11a: 002f
11c: 002f
11e: 002f
120: 8000
122: 0000
124: 5100
126: 1472
128: 0028
12a: 0050
12c: 0000
12e: 0000
130: 0000
132: 0000
134: 0000
136: 0000
138: 0000
13a: 0000
nvidia@EATHA20:~$
amixer -c APE contents > contents.txt：
contents.txt (464.0 KB)
nvidia@EATHA20:~$ sudo cat /sys/kernel/debug/clk/clk_summary | grep mclk
aud_mclk 1 1 0 12287995 0 0 50000 Y sgtl5000@0a no_connection_id
nvidia@EATHA20:~$
