Version: R35.1
Linux: 20.04
Through the HDMI external display, use the WM8904 codec to emit sound. How do I modify the device tree? Because I followed the tutorial to change it and it didn’t work out, I want to get some help, thank you. Here is my device tree modification file:
tegra194-audio-p2822-0000.dtsi (14.9 KB)
Modified path:
hardware/nvidia/platform/t19x/galen/kernel-dts/common/tegra194-audio-p2822-0000.dtsi/
Reference:https://docs.nvidia.com/jetson/archives/r35.1/DeveloperGuide/text/SD/Communications/AudioSetupAndDevelopment.html#device-tree-configuration-for-a-custom-audio-card
I’m also working on tegra_machine_driver.c file to modify as follows:
static int tegra_machine_wm8904_init(struct snd_soc_pcm_runtime *rtd)
{
struct device *dev = rtd->card->dev;
int err;
err = snd_soc_dai_set_sysclk(rtd->codec_dai, WM8904_CLK_MCLK, 12288000,
SND_SOC_CLOCK_IN);
if (err)
{
dev_err(dev, "failed to wm8904 sysclk !\n");
return err;
}
return 0;
}
static int codec_init(struct tegra_machine *machine)
{
struct snd_soc_dai_link *dai_links = machine->asoc->dai_links;
unsigned int num_links = machine->asoc->num_links, i;
if (!dai_links || !num_links)
return -EINVAL;
for (i = 0; i < num_links; i++)
{
if (!dai_links[i].name)
continue;
if (strstr(dai_links[i].name, "rt565x-playback") ||
strstr(dai_links[i].name, "rt565x-codec-sysclk-bclk1"))
dai_links[i].init = tegra_machine_rt565x_init;
else if (strstr(dai_links[i].name, "fe-pi-audio-z-v2"))
dai_links[i].init = tegra_machine_fepi_init;
else if (strstr(dai_links[i].name, "respeaker-4-mic-array"))
dai_links[i].init = tegra_machine_respeaker_init;
else if (strstr(dai_links[i].name, "wm8904-playback"))
dai_links[i].init = tegra_machine_wm8904_init;
}
return 0;
}
And refer to the modification of kconfig file:
config SND_SOC_TEGRA210_AUDIO
tristate "SoC Audio support for Tegra210"
depends on I2C
depends on ARCH_TEGRA_210_SOC || ARCH_TEGRA_18x_SOC
select SND_SOC_RT5659
select SND_SOC_TAS2552
select SND_SOC_SGTL5000
select SND_SOC_WM8904
Here’s a related topic I searched for:https://forums.developer.nvidia.com/t/problem-seeing-i2c-device-on-my-carrier-please-look-over-my-dts-changes/81932/4
The control pin of WM8904 Codec and Jetson: I2C
the corresponding device tree node is: i2c@c250000
➜ ~ sudo i2cdetect -y -r -a 7
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: – – – – – – – – – – – – – – – –
10: – – – – – – – – – – 1a – – – – –
20: – – – – – – – – – – – – – – – –
30: – – – – – – – – – – – – – – – –
40: – – – – – – – – – – – – – – – –
50: – – – – – – – – – – – – – – – 5f
60: – – – – – – – – – – – – – – – –
70: – – – – – – – – – – – – – – – –
WM8904 Device Address: 0x1a
and the data interface: I2S1
I learned that ASoC is divided into Machine, Platform and Codec three parts, of which the Machine driver is responsible for the coupling between Platform and Codec and some and device- or board-specific code, again referencing the content of the previous section: the Machine driver is responsible for handling some machine-specific controls and audio events (for example, when playing audio, you need to turn on an amplifier first); Platform and Codec drivers alone will not work, it must be combined by the Machine driver to complete the audio processing of the entire device.
Check I2C communication & codecs probe:
➜ ~ sudo cat /sys/bus/i2c/devices/7-001a/uevent
[sudo] password for nvidia:
OF_NAME=rt5659.7-001a
OF_FULLNAME=/i2c@c250000/rt5659.7-001a@1a
OF_COMPATIBLE_0=realtek,rt5658
OF_COMPATIBLE_N=1
MODALIAS=of:Nrt5659.7-001aT(null)Crealtek,rt5658
I have modified the device tree to wm8904, but the check result is rt5658,why?
i2c@c250000 {
//add
wm8904_codec: wm8904@1a {
compatible = "wlf,wm8904";
status ="okay";
reg = <0x1a>;
clocks = <&wm8904_mclk>;
// clocks = <&bpmp TEGRA194_CLK_AUD_MCLK>;
// clocks = <&pck0>;
clock-names = "mclk";
};
Hi,
A user has enabled it on TX2 NX. You may refer to this topic and give it a try:
WM8904 audio driver support for Jetson TX2 NX
Besides, FE-PI audio v2 board is supported in 40-pin expansion header. You can enable it through jetson-io.py and refer to the device tree. To check which part has to be modified in device tree.
I also refer to this topic, and I also modified it according to it, but the wm8904 codec was not configured successfully， Check I2C communication & codecs probe:
➜ ~ sudo cat /sys/bus/i2c/devices/7-001a/uevent
[sudo] password for nvidia:
OF_NAME=rt5659.7-001a
OF_FULLNAME=/i2c@c250000/rt5659.7-001a@1a
OF_COMPATIBLE_0=realtek,rt5658
OF_COMPATIBLE_N=1
MODALIAS=of:Nrt5659.7-001aT(null)Crealtek,rt5658
@DaneLLL ,thank you
// SPDX-License-Identifier: GPL-2.0-only
/*
- T194 p2822-0000 audio common DTSI file.
- Copyright (c) 2017-2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
*/
#include <audio/tegra-platforms-audio-dai-links.dtsi>
#include <audio/tegra186-audio-dai-links.dtsi>
#include <audio/tegra186-audio-graph.dtsi>
#include <dt-bindings/gpio/tegra194-gpio.h>
#include <dt-bindings/audio/tegra194-audio.h>
#include <audio/tegra-platforms-audio-dmic3-5-switch.dtsi>
/ {
aconnect@2a41000 {
status = "okay";
agic-controller@2a41000 {
status = "okay";
};
adsp@2993000 {
status = "okay";
};
};
//add
clocks {
wm8904_mclk: wm8904_mclk {
compatible = "fixed-clock";
#clock-cells = <0>;
// clock-frequency = <49152000>;
clock-frequency = <12288000>;
clock-output-names = "wm8904-mclk";
status = "okay";
};
};
// nvidia,dai-link-1 {
// link-name = "wm8904-playback";
// cpu-dai = <&tegra_i2s1>;
// codec-dai = <&wm8904>;
// cpu-dai-name = "I2S1";
// codec-dai-name = "wm8904-hifi";
// format = "i2s";
// bitclock-slave;
// frame-slave;
// bitclock-noninversion;
// frame-noninversion;
// bit-format = "s16_le";
// bclk_ratio = <0>;
// srate = <48000>;
// num-channel = <2>;
// ignore_suspend;
// name-prefix = "x";
// status = "okay";
// };
i2c@c250000 {
//add
wm8904_codec: wm8904@1a {
compatible = "wlf,wm8904";
status ="okay";
reg = <0x1a>;
clocks = <&wm8904_mclk>;
// clocks = <&bpmp TEGRA194_CLK_AUD_MCLK>;
// clocks = <&pck0>;
clock-names = "mclk";
};
// rt5658: rt5659.7-001a@1a {
// compatible = "realtek,rt5658";
// reg = <0x1a>;
// /* refer include/sound/rt5659.h for the values to be used */
// realtek,jd-src = <2>; /* RT5659_JD_HDA_HEADER */
// realtek,dmic1-data-pin = <0>; /* RT5659_DMIC1_NULL */
// realtek,dmic2-data-pin = <0>; /* RT5659_DMIC2_NULL */
// /* Codec IRQ output */
// interrupt-parent = <&tegra_main_gpio>;
// interrupts = <TEGRA194_MAIN_GPIO(S, 5) GPIO_ACTIVE_HIGH>;
// clocks = <&bpmp TEGRA194_CLK_AUD_MCLK>;
// clock-names = "mclk";
// #sound-dai-cells = <1>;
// sound-name-prefix = "CVB-RT";
// status = "okay";
// port {
// rt5658_ep: endpoint {
// remote-endpoint = <&i2s1_dap_ep>;
// mclk-fs = <256>;
// link-name = "rt565x-playback";
// };
// };
// };
};
/* Default for all I2S is long fsync width(31) */
aconnect@2a41000 {
compatible = "nvidia,tegra210-aconnect";
status = "okay";
ahub {
/* I2S4 in Short frame sync for BT SCO */
i2s@2901300 {
bclk-ratio = <4>;
status = "okay";
};
};
// tegra_axbar: ahub {
// compatible = "nvidia,tegra186-ahub";
// status = "okay";
// tegra_i2s1: i2s@2901000 {
// compatible = "nvidia,tegra210-i2s";
// reg = <0x0 0x2901000 0x0 0x100>;
// clocks = <&bpmp_clks TEGRA194_CLK_I2S1>,
// <&bpmp_clks TEGRA194_CLK_PLLA_OUT0>,
// <&bpmp_clks TEGRA194_CLK_I2S1_SYNC_INPUT>,
// <&bpmp_clks TEGRA194_CLK_SYNC_I2S1>,
// <&bpmp_clks TEGRA194_CLK_I2S1_SYNC_INPUT>;
// clock-names = "i2s","pll_a_out0", "ext_audio_sync","audio_sync", "clk_sync_input";
// assigned-clocks = <&bpmp_clks TEGRA194_CLK_I2S1>;
// assigned-clock-parents =
// <&bpmp_clks TEGRA194_CLK_PLLA_OUT0>;
// assigned-clock-rates = <1536000>;
// fsync-width = <31>;
// #sound-dai-cells = <1>;
// sound-name-prefix = "I2S1";
// status = "okay";
// };
// tegra_dmic1: dmic@2904000 {
// compatible = "nvidia,tegra210-dmic";
// reg = <0x0 0x2904000 0x0 0x100>;
// clocks = <&bpmp_clks TEGRA194_CLK_DMIC1>,
// <&bpmp_clks TEGRA194_CLK_PLLA_OUT0>;
// clock-names = "dmic", "pll_a_out0";
// assigned-clocks = <&tegra_car TEGRA194_CLK_DMIC1>;
// assigned-clock-parents =
// <&tegra_car TEGRA194_CLK_PLLA_OUT0>;
// assigned-clock-rates = <3072000>;
// #sound-dai-cells = <1>;
// sound-name-prefix = "DMIC1";
// status = "okay";
// };
// tegra_dspk1: dspk@2905000 {
// compatible = "nvidia,tegra186-dspk";
// reg = <0x0 0x2905000 0x0 0x100>;
// clocks = <&bpmp_clks TEGRA194_CLK_DSPK1>,
// <&bpmp_clks TEGRA194_CLK_PLLA_OUT0>,
// <&bpmp_clks TEGRA194_CLK_SYNC_DSPK1>;
// clock-names = "dspk", "pll_a_out0", "sync_dspk";
// assigned-clocks = <&tegra_car TEGRA194_CLK_DSPK1>;
// assigned-clock-parents =
// <&tegra_car TEGRA194_CLK_PLLA_OUT0>;
// assigned-clock-rates = <3072000>;
// #sound-dai-cells = <1>;
// sound-name-prefix = "DSPK1";
// status = "okay";
// };
// };
};
tegra_acsl_audio: acsl_audio {
status = "okay";
};
hda@3510000 {
status = "okay";
nvidia,model = "NVIDIA Jetson AGX Xavier HDA";
};
tegra_sound: sound {
status = "okay";
compatible = "nvidia,tegra186-ape";
nvidia-audio-card,name = "NVIDIA Jetson AGX Xavier APE";
nvidia,num-codec-link = <1>;
nvidia,num-clk = <6>;
nvidia,clk-rates = < 270950400 /* PLLA_x11025_RATE */
11289600 /* AUD_MCLK_x11025_RATE */
45158400 /* PLLA_OUT0_x11025_RATE */
45158400 /* AHUB_x11025_RATE */
245760000 /* PLLA_x8000_RATE */
12288000 /* AUD_MCLK_x8000_RATE */
49152000 /* PLLA_OUT0_x8000_RATE */
49152000 >;/* AHUB_x8000_RATE */
nvidia,xbar = <&tegra_axbar>;
clocks = <&bpmp_clks TEGRA194_CLK_PLLA>,
<&bpmp_clks TEGRA194_CLK_PLLA_OUT0>,
<&bpmp_clks TEGRA194_CLK_AUD_MCLK>;
clock-names = "pll_a", "pll_a_out0", "extern1";
assigned-clocks = <&bpmp_clks TEGRA194_CLK_AUD_MCLK>;
assigned-clock-parents = <&bpmp_clks TEGRA194_CLK_PLLA_OUT0>;
nvidia-audio-card,widgets =
"Headphone", "H40-SGTL Headphone",
"Microphone", "H40-SGTL Mic",
"Line", "H40-SGTL Line In",
"Line", "H40-SGTL Line Out",
"Headphone", "CVB-RT Headphone Jack",
"Microphone", "CVB-RT Mic Jack",
"Speaker", "CVB-RT Int Spk",
"Microphone", "CVB-RT Int Mic";
//add
nvidia-audio-card,routing =
"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",
"x Headphone", "x HPOUTL",
"x Headphone", "x HPOUTR",
"CVB-RT Headphone Jack", "CVB-RT HPO L Playback",
"CVB-RT Headphone Jack", "CVB-RT HPO R Playback",
"CVB-RT IN1P", "CVB-RT Mic Jack",
"CVB-RT IN2P", "CVB-RT Mic Jack",
"CVB-RT Int Spk", "CVB-RT SPO Playback",
"CVB-RT DMIC L1", "CVB-RT Int Mic",
"CVB-RT DMIC L2", "CVB-RT Int Mic",
"CVB-RT DMIC R1", "CVB-RT Int Mic",
"CVB-RT DMIC R2", "CVB-RT Int Mic";
nvidia-audio-card,mclk-fs = <256>;
nvidia,dai-link-1 {
link-name = "wm8904-playback";
cpu-dai = <&tegra_i2s1>;
codec-dai = <&wm8904_codec>;
cpu-dai-name = "I2S1";
codec-dai-name = "wm8904-hifi";
format = "i2s";
bitclock-slave;
frame-slave;
bitclock-noninversion;
frame-noninversion;
bit-format = "s16_le";
bclk_ratio = <0>;
srate = <48000>;
num-channel = <2>;
ignore_suspend;
// name-prefix = "x";
status = "okay";
};
};
tegra_sound_graph: sound_graph {
compatible = "nvidia,tegra186-audio-graph-card";
/*
* Tegra audio graph card is based on uptream generic audio
* graph sound card. In future there is plan to use this
* as default sound card.
*/
status = "disabled";
dais = /* ADMAIF (FE) Ports */
<&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>,
/* ADSP (FE) Ports */
<&adsp_pcm1_port>, <&adsp_pcm2_port>,
<&adsp_compr1_port>, <&adsp_compr2_port>,
/* XBAR I/O ports */
<&xbar_i2s1_port>, <&xbar_i2s2_port>, <&xbar_i2s3_port>,
<&xbar_i2s4_port>, <&xbar_i2s5_port>, <&xbar_i2s6_port>,
<&xbar_dmic1_port>, <&xbar_dmic2_port>,
<&xbar_dmic3_port>, <&xbar_dmic4_port>,
<&xbar_dspk1_port>, <&xbar_dspk2_port>,
/* XBAR HW accelerator ports */
<&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_afc1_in_port>, <&xbar_afc2_in_port>,
<&xbar_afc3_in_port>, <&xbar_afc4_in_port>,
<&xbar_afc5_in_port>, <&xbar_afc6_in_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_arad_port>,
<&xbar_mixer_in1_port>, <&xbar_mixer_in2_port>,
<&xbar_mixer_in3_port>, <&xbar_mixer_in4_port>,
<&xbar_mixer_in5_port>, <&xbar_mixer_in6_port>,
<&xbar_mixer_in7_port>, <&xbar_mixer_in8_port>,
<&xbar_mixer_in9_port>, <&xbar_mixer_in10_port>,
<&xbar_ope1_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_adx1_in_port>, <&xbar_adx2_in_port>,
<&xbar_adx3_in_port>, <&xbar_adx4_in_port>,
/* BE I/O Ports */
<&i2s1_port>, <&i2s2_port>, <&i2s3_port>,
<&i2s4_port>, <&i2s5_port>, <&i2s6_port>,
<&dmic1_port>, <&dmic2_port>, <&dmic3_port>,
<&dmic4_port>,
<&dspk1_port>, <&dspk2_port>,
/* BE HW accelerator ports */
<&sfc1_out_port>, <&sfc2_out_port>,
<&sfc3_out_port>, <&sfc4_out_port>,
<&mvc1_out_port>, <&mvc2_out_port>,
<&afc1_out_port>, <&afc2_out_port>,
<&afc3_out_port>, <&afc4_out_port>,
<&afc5_out_port>, <&afc6_out_port>,
<&asrc_out1_port>, <&asrc_out2_port>,
<&asrc_out3_port>, <&asrc_out4_port>,
<&asrc_out5_port>, <&asrc_out6_port>,
<&mixer_out1_port>, <&mixer_out2_port>,
<&mixer_out3_port>, <&mixer_out4_port>,
<&mixer_out5_port>,
<&ope1_out_port>,
<&amx1_out_port>, <&amx2_out_port>,
<&amx3_out_port>, <&amx4_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>,
/* ADSP related ports */
<&adsp_admaif1_port>, <&adsp_admaif2_port>,
<&adsp_admaif3_port>, <&adsp_admaif4_port>,
<&adsp_admaif5_port>, <&adsp_admaif6_port>,
<&adsp_admaif7_port>, <&adsp_admaif8_port>,
<&adsp_admaif9_port>, <&adsp_admaif10_port>,
<&adsp_admaif11_port>, <&adsp_admaif12_port>,
<&adsp_admaif13_port>, <&adsp_admaif14_port>,
<&adsp_admaif15_port>, <&adsp_admaif16_port>,
<&adsp_admaif17_port>, <&adsp_admaif18_port>,
<&adsp_admaif19_port>, <&adsp_admaif20_port>,
<&admaif1_codec_port>, <&admaif2_codec_port>,
<&admaif3_codec_port>, <&admaif4_codec_port>,
<&admaif5_codec_port>, <&admaif6_codec_port>,
<&admaif7_codec_port>, <&admaif8_codec_port>,
<&admaif9_codec_port>, <&admaif10_codec_port>,
<&admaif11_codec_port>, <&admaif12_codec_port>,
<&admaif13_codec_port>, <&admaif14_codec_port>,
<&admaif15_codec_port>, <&admaif16_codec_port>,
<&admaif17_codec_port>, <&admaif18_codec_port>,
<&admaif19_codec_port>, <&admaif20_codec_port>;
label = "NVIDIA Jetson AGX Xavier APE";
clocks = <&bpmp_clks TEGRA194_CLK_PLLA>,
<&bpmp_clks TEGRA194_CLK_PLLA_OUT0>;
clock-names = "pll_a", "plla_out0";
assigned-clocks = <&bpmp_clks TEGRA194_CLK_AUD_MCLK>;
assigned-clock-parents = <&bpmp_clks TEGRA194_CLK_PLLA_OUT0>;
widgets = "Headphone", "CVB-RT Headphone Jack",
"Microphone", "CVB-RT Mic Jack",
"Speaker", "CVB-RT Int Spk",
"Microphone", "CVB-RT Int Mic";
routing = "CVB-RT Headphone Jack", "CVB-RT HPO L Playback",
"CVB-RT Headphone Jack", "CVB-RT HPO R Playback",
"CVB-RT IN1P", "CVB-RT Mic Jack",
"CVB-RT IN2P", "CVB-RT Mic Jack",
"CVB-RT Int Spk", "CVB-RT SPO Playback",
"CVB-RT DMIC L1", "CVB-RT Int Mic",
"CVB-RT DMIC L2", "CVB-RT Int Mic",
"CVB-RT DMIC R1", "CVB-RT Int Mic",
"CVB-RT DMIC R2", "CVB-RT Int Mic";
/*
* For codec2codec based DAI link design this is required.
* For DPCM based design, this is optional and instead
* it will be picked from codec port node.
*/
mclk-fs = <256>;
};
};
/*
* Default config for all I2S dai links are
* format = "i2s", bitclock-slave, frame-slave,
* bitclock-noninversion, frame-noninversion,
* Any change from default needs override on
* platform specific files.
*/
/* Override with Codec entries */
&i2s1_to_codec {
link-name = "wm8904-playback";
// link-name = "rt5658-playback";
bitclock-master;
frame-master;
codec {
sound-dai = <&wm8904_codec 0>;
prefix = "H40-SGTL";
// prefix = "CVB-RT";
};
// //add
// link-name = "Playback";
// cpu-dai = <&tegra_i2s1>;
// codec-dai = <&wm8904>;
// cpu-dai-name = "I2S1";
// codec-dai-name = "wm8904-hifi";
// format = "i2s";
// bitclock-slave;
// frame-slave;
// bitclock-noninversion;
// frame-noninversion;
// bit-format = "s16_le";
// bclk_ratio = <0>;
// srate = <48000>;
// num-channel = <2>;
// ignore_suspend;
// name-prefix = "x";
// status = "okay";
};
hdr40_snd_link_i2s: &i2s2_to_codec { };
/* Override with BT SCO entries */
&i2s4_to_codec {
format = "dsp_a";
bitclock-inversion;
};
/* Audio graph related bindings */
// &i2s1_dap_ep {
// // remote-endpoint = <&rt5658_ep>;
// dai-format = "dsp_a";
// bitclock-inversion;
// };
&i2s2_to_codec {
bitclock-master;
frame-master;
};
&i2s4_dap_ep {
dai-format = "dsp_a";
bitclock-inversion;
};
hdr40_snd_i2s_dap_ep: &i2s2_dap_ep { };
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