SGTL5000 cannot output audio

hanyu.du · December 19, 2024, 11:07am

Hello NVIDIA engineers.
I am having a problem with the SGTL5000 audio chip:
After configuring the device tree according to the documentation, the headphone output is only current sound, no audio output. Do you have any suggestions for modification?
log.txt (79.6 KB)
tegra234-p3767-common-audio.dtsi.txt (2.8 KB)

root@nvidia:/sys/kernel/debug/regmap/0-000a# cat registers
000: a011
002: 0070
004: 0008
006: 0080
00a: 0010
00e: 0200
010: 3c3c
014: 015f
020: 0000
022: 1818
024: 0133
026: 0068
028: 01f1
02a: 0170
02c: 0322
02e: 0d0d
030: 72fb
032: 5000
034: 0000
036: 0017
03a: 0000
03c: 0000
100: 0011
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: 1473
128: 0028
12a: 0050
12c: 0000
12e: 0000
130: 0000
132: 0000
134: 0000
136: 0000
138: 0000
13a: 0000

Then I tried to configure the headphone output, but no effect:
root@nvidia:/sys/kernel/debug/regmap/0-000a# amixer controls | grep H40
numid=451,iface=MIXER,name=‘H40-SGTL AVC Hard Limiter Switch’
numid=453,iface=MIXER,name=‘H40-SGTL AVC Integrator Response’
numid=452,iface=MIXER,name=‘H40-SGTL AVC Max Gain Volume’
numid=450,iface=MIXER,name=‘H40-SGTL AVC Switch’
numid=454,iface=MIXER,name=‘H40-SGTL AVC Threshold Volume’
numid=455,iface=MIXER,name=‘H40-SGTL BASS 0’
numid=456,iface=MIXER,name=‘H40-SGTL BASS 1’
numid=457,iface=MIXER,name=‘H40-SGTL BASS 2’
numid=458,iface=MIXER,name=‘H40-SGTL BASS 3’
numid=459,iface=MIXER,name=‘H40-SGTL BASS 4’
numid=439,iface=MIXER,name=‘H40-SGTL Capture Attenuate Switch (-6dB)’
numid=1497,iface=MIXER,name=‘H40-SGTL Capture Mux’
numid=441,iface=MIXER,name=‘H40-SGTL Capture Switch’
numid=438,iface=MIXER,name=‘H40-SGTL Capture Volume’
numid=440,iface=MIXER,name=‘H40-SGTL Capture ZC Switch’
numid=1501,iface=MIXER,name=‘H40-SGTL DAP MIX Mux’
numid=448,iface=MIXER,name=‘H40-SGTL DAP Main channel’
numid=449,iface=MIXER,name=‘H40-SGTL DAP Mix channel’
numid=1500,iface=MIXER,name=‘H40-SGTL DAP Mux’
numid=1499,iface=MIXER,name=‘H40-SGTL Digital Input Mux’
numid=1498,iface=MIXER,name=‘H40-SGTL Headphone Mux’
numid=443,iface=MIXER,name=‘H40-SGTL Headphone Playback Switch’
numid=442,iface=MIXER,name=‘H40-SGTL Headphone Playback Volume’
numid=444,iface=MIXER,name=‘H40-SGTL Headphone Playback ZC Switch’
numid=447,iface=MIXER,name=‘H40-SGTL Lineout Playback Switch’
numid=446,iface=MIXER,name=‘H40-SGTL Lineout Playback Volume’
numid=445,iface=MIXER,name=‘H40-SGTL Mic Volume’
numid=437,iface=MIXER,name=‘H40-SGTL PCM Playback Volume’

root@nvidia:/sys/kernel/debug/regmap/0-000a#
root@nvidia:/sys/kernel/debug/regmap/0-000a#

root@nvidia:/sys/kernel/debug/regmap/0-000a# amixer cset numid=443 1
numid=443,iface=MIXER,name=‘H40-SGTL Headphone Playback Switch’
; type=BOOLEAN,access=rw------,values=1
: values=on
root@nvidia:/sys/kernel/debug/regmap/0-000a# amixer cset numid=442 30
numid=442,iface=MIXER,name=‘H40-SGTL Headphone Playback Volume’
; type=INTEGER,access=rw—R–,values=2,min=0,max=127,step=0
: values=30,30
| dBscale-min=-51.50dB,step=0.50dB,mute=0
root@nvidia:/sys/kernel/debug/regmap/0-000a# cat registers
000: a011
002: 0070
004: 0008
006: 0080
00a: 0010
00e: 0200
010: 3c3c
014: 015f
020: 0000
022: 6161
024: 0123

mkumard · December 20, 2024, 2:18am

Hi hanyu,
I don’t see any errors for the codec in the log provided. I believe the current sound comes only during the playback on the codec?. If so, can you confirm if I2S signals are reaching the codec properly. If this is true, then issue could be related to the codec connection or configurations.

Here are couple of similar issue resolved for your reference.

Audio codec sgtl5000 is not working for R36.3.0 (JP6.0) - Jetson & Embedded Systems / Jetson AGX Orin - NVIDIA Developer Forums

AGX Orin with sgtl5000 has no sound - Jetson & Embedded Systems / Jetson AGX Orin - NVIDIA Developer Forums

hanyu.du · December 20, 2024, 2:37am

Hi, I checked this link:

I have the same error as him, but I added the code following his last steps and it didn’t work:
hdr40_snd_link_i2s: &i2s1_to_codec {
link-name = “fe-pi-audio-z-v2”;
bitclock-master;
frame-master;
codec-dai-name = “sgtl5000”;
codec-dai = <&sgtl5000>;
name-prefix = “H40-SGTL”;
codec {
sound-dai = <&sgtl5000>;
prefix = “H40-SGTL”;
};
};

root@nvidia:/home/nvidia# amixer -c APE contents > contents.txt
amixer: Control hw:1 element TLV read error: No such device or address

root@nvidia:/home/nvidia# sudo cat /sys/kernel/debug/regmap/0-000a/registers
000: a011
002: 0071
004: 0007
006: 01b0
00a: 0010
00e: 0200
010: 3c3c
014: 015f
020: 0000
022: 6161
024: 0023

And now there are I2S errors reported.
[ 13.909487] tegra210-i2s 2901000.i2s: timeout: failed to reset I2S for playback
[ 13.909715] tegra210-i2s 2901000.i2s: ASoC: PRE_PMU: I2S1 RX event failed: -110
[ 13.937484] tegra210-i2s 2901000.i2s: timeout: failed to reset I2S for playback
[ 13.937710] tegra210-i2s 2901000.i2s: ASoC: PRE_PMU: I2S1 RX event failed: -110

mkumard · December 20, 2024, 4:50am

This error could be related to Tegra I2S1 is operating as slave. Can you try setting the below controls to make Tegra I2S1 as master.

amixer -c APE cset name=“I2S1 codec master mode” “cbs-cfs”

hanyu.du · December 20, 2024, 5:07am

Hello

nvidia@nvidia:~$ amixer -c APE cset name=“I2S1 codec master mode” “cbs-cfs”
numid=1553,iface=MIXER,name=‘I2S1 codec master mode’
; type=ENUMERATED,access=rw------,values=1,items=3
; Item #0 ‘None’
; Item #1 ‘cbm-cfm’
; Item #2 ‘cbs-cfs’
: values=2
nvidia@nvidia:~$
nvidia@nvidia:~$

nvidia@nvidia:~$ [ 6650.733210] sgtl5000 0-000a: PLL not supported in slave mode
[ 6650.733390] sgtl5000 0-000a: 278 ratio is not supported. SYS_MCLK needs to be 256, 384 or 512 * fs
[ 6650.733654] sgtl5000 0-000a: ASoC: error at snd_soc_dai_hw_params on sgtl5000: -22
[ 6650.733879] tegra-asoc: sound: ASoC: PRE_PMU: fe-pi-audio-z-v2-playback event failed: -22

mkumard · December 20, 2024, 5:27am

Hi
May I know the audio sampling rate played at your end.

Please provide the below dump during the usecase

sudo cat /sys/kernel/debug/clk/clk_summary | grep mclk

hanyu.du · December 20, 2024, 5:27am

nvidia@nvidia:~$ sudo cat /sys/kernel/debug/clk/clk_summary | grep mclk
[sudo] password for nvidia:
aud_mclk 39 39 0 45158398 49151953 0 0 50000

mkumard · December 20, 2024, 6:24am

Hi,
I believe you are using 40 Pin header I2S for your testing on Orin Nx board.

If so, the correct Tegra I2S instance is I2S2

amixer -c APE cset name=“I2S2 codec master mode” “cbs-cfs”

Also update below dt to add mclk-fs entry

	port {
		sgtl5000_ep: endpoint {
			remote-endpoint = <&hdr40_snd_i2s_dap_ep>;
			link-name = "fe-pi-audio-z-v2";
			mclk-fs = <256>;
		};
	};

hanyu.du · December 20, 2024, 7:03am

Used the circuitry from our custom board.
The I2S channel used is the same as the development board, which is what you call I2S2.

I modified it to IS2 configuration:
i2s@2901100 {
status = “okay”;
};
hdr40_snd_link_i2s: &i2s2_to_codec
hdr40_snd_i2s_dap_ep: &i2s2_dap_ep

Also added, but it doesn’t do anything, the error is still the same.
port {
sgtl5000_ep: endpoint {
remote-endpoint = <&hdr40_snd_i2s_dap_ep>;
link-name = “fe-pi-audio-z-v2”.
mclk-fs = <256>;
};
};

Is there something wrong with my circuit?

mkumard · December 20, 2024, 7:28am

Hi,
The circuit looks good. I can see now, you are using I2S2 from Tegra. Also, one more question, how did you ensure I2S2 and AUD_MLCK pinmux are set properly. Whether Jetson-IO tool was used to enable the Pinmux of these pins?.

hanyu.du · December 20, 2024, 7:34am

After modifying pinmux, then modify bootloader/t186ref/BCT/tegra234-mb1-bct-pinmux-p3767-hdmi-a03.dtsi using . /tools/kernel_flash/l4t_initrd_flash.sh to re-burn the

Sheetal.G · December 20, 2024, 7:41am

Hi Hanyu,

Please provide the output of below commands from target, to confirm pinmux and DT changes are reflected,

cat /sys/kernel/debug/pinctrl/<addr>.pinmux/pinconf-groups > ~/pinmux_<addr>, here addr is pinmux node address.
dtc -I fs -O dts /proc/device-tree >/tmp/dt.log

Additionally, could you please probe the I2S2 and AUD_MCLK signals as well from Tegra and share the details.

hanyu.du · December 20, 2024, 7:54am

Hello

pinmux_2430000.txt (39.3 KB)
dt.log (434.2 KB)

hanyu.du · December 20, 2024, 8:02am

nvidia@nvidia:~$ sudo grep “mclk” /sys/kernel/debug/clk/clk_summary
aud_mclk 35 35 0 45158398 49151953 0 0 50000

AUD_MCLK:

I2S_Clk:

Sheetal.G · December 20, 2024, 9:35am

Pinmux settings looks fine.
Minor updates required in DT,

Add nvidia-audio-card,mclk-fs = <256>; in sound node property.
Few unwanted properties are there in dai-link, can be updated like below,

    &i2s2_to_codec {
      	link-name = "fe-pi-audio-z-v2";
        bitclock-master;
        frame-master;
	    codec {
	     	sound-dai = <&sgtl5000>;
		    prefix = "H40-SGTL";
	};
};

Remove below entry,

port {
		sgtl5000_ep: endpoint {
			remote-endpoint = <&hdr40_snd_i2s_dap_ep>;
			link-name = "fe-pi-audio-z-v2";
			mclk-fs = <256>;
		};
	};

Incase still facing issue, please provide below details:

Mixer controls dump using commandamixer -c APE contents > ~/settings.txt
Codec register dump while usecase is running.
Kernel logs after usecase stopped.

Also, please check if I2S data line has signal.

hanyu.du · December 20, 2024, 9:53am

nvidia@nvidia:/home/nvidia# amixer -c APE contents > ~/settings.txt
amixer: Control hw:1 element TLV read error: No such device or address
settings.txt (788.3 KB)
reg:

nvidia@nvidia:~$ amixer -c APE cset name=“I2S2 codec master mode” “cbs-cfs”
numid=1555,iface=MIXER,name=‘I2S2 codec master mode’
; type=ENUMERATED,access=rw------,values=1,items=3
; Item #0 ‘None’
; Item #1 ‘cbm-cfm’
; Item #2 ‘cbs-cfs’
: values=2
nvidia@nvidia:~$ sudo su
root@nvidia:/home/nvidia# cat /sys/kernel/debug/regmap/0-000a/registers
000: a011
002: 0070
004: 0007
006: 0000
00a: 0010
00e: 0200
010: 3c3c
014: 015f
020: 0000
022: 6161
024: 0023
026: 0068
028: 01f1
02a: 0170
02c: 0322
02e: 0101
030: 77fb
032: 7599
034: 0000
036: 0017
03a: 0000
03c: 0000
100: 0011
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
root@nvidia:/home/nvidia# [ 530.333610] sgtl5000 0-000a: PLL not supported in slave mode
[ 530.333791] sgtl5000 0-000a: 278 ratio is not supported. SYS_MCLK needs to be 256, 384 or 512 * fs
[ 530.334063] sgtl5000 0-000a: ASoC: error at snd_soc_dai_hw_params on sgtl5000: -22
[ 530.334327] tegra-asoc: sound: ASoC: PRE_PMU: fe-pi-audio-z-v2-playback event failed: -22
[ 530.344792] tegra210-i2s 2901000.i2s: timeout: failed to reset I2S for playback
[ 530.345009] tegra210-i2s 2901000.i2s: ASoC: PRE_PMU: I2S1 RX event failed: -110

hanyu.du · December 20, 2024, 9:56am

log:
log.txt (82.2 KB)
orin I2S_out:

WeChat Image_202412201756241920×1080 153 KB

Sheetal.G · December 20, 2024, 10:13am

Thanks for providing the details,

The below errors are observed because I2S1 is also connected to ADMAIF1. Please do below settings before running the usecase,
amixer -c APE cset name="I2S1 Mux" 0
amixer -c APE cset name="I2S2 Mux" ADMAIF1

Hope, pcm device 0 is used for playback.

If still audio is not functional, similar error is observed here, Configuring an SGTL5000 codec on TX2i - #6 by jonathanh. Please check if it helps.

hanyu.du · December 20, 2024, 10:35am

This is useful, I2S1 won’t come back.

I was modifying tegra_machine_dai_init and realized that the default used kernel/kernel-5.10/sound/soc/tegra/tegra_machine_driver.c. instead of kernel/nvidia/
How do I switch to kernel/nvidia to change the code

Sheetal.G · December 20, 2024, 10:48am

No need to switch to kernel/nvidia, the tegra driver files are located at kernel/kernel-5.10/sound/soc/tegra/ location only. You can look for snd_soc_dai_set_sysclk API or link-name inside tegra_codecs.c.

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SGTL5000 cannot output audio

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