TLV320DAC3100: Trying to play sound, got from codec "Unable to sync registers 0x1b-0x1b. -6"

Ophir Carmi

Part Number: TLV320DAC3100

Hi,

We are using TLV320DAC3100 to play sound, together with imx8mn-ddr4 chip of NXP.

The sound card was detected by ALSA.

However I get these warnings:

# dmesg | grep -i tlv
...
[19647.08h.39m.34s.087] [    4.622645] tlv320aic31xx-codec 3-0018: 3-0018 supply HPVDD not found, using dummy regulator
[19647.08h.39m.34s.130] [    4.631175] tlv320aic31xx-codec 3-0018: 3-0018 supply SPRVDD not found, using dummy regulator
[19647.08h.39m.34s.130] [    4.639783] tlv320aic31xx-codec 3-0018: 3-0018 supply SPLVDD not found, using dummy regulator
[19647.08h.39m.34s.130] [    4.648361] tlv320aic31xx-codec 3-0018: 3-0018 supply AVDD not found, using dummy regulator
[19647.08h.39m.34s.130] [    4.656763] tlv320aic31xx-codec 3-0018: 3-0018 supply IOVDD not found, using dummy regulator
[19647.08h.39m.34s.130] [    4.665260] tlv320aic31xx-codec 3-0018: 3-0018 supply DVDD not found, using dummy regulator
[19647.08h.39m.34s.180] [    5.152043] asoc-simple-card sound-tlv320dac31: tlv320dac31xx-hifi <-> 30030000.sai mapping ok
[19647.08h.39m.34s.180] [    5.160681] asoc-simple-card sound-tlv320dac31: ASoC: no DMI vendor name!
[19647.08h.39m.34s.180] [    5.170311] tlv320aic31xx-codec 3-0018: Unable to sync registers 0x1b-0x1b. -6
[19647.08h.39m.34s.180] [    5.182315] tlv320aic31xx-codec 3-0018: Failed to restore cache: -6

[19647.08h.39m.16s.622] root@imx8mnddr4evk:~# dmesg | grep -i sai
[19647.08h.39m.28s.269] [ 5.134587] debugfs: Directory '30030000.sai' with parent 'Audio Output' already present!
[19647.08h.39m.28s.295] [ 5.152043] asoc-simple-card sound-tlv320dac31: tlv320dac31xx-hifi <-> 30030000.sai mapping ok

here is the output of aplay -L:

[19647.08h.29m.35s.440] null [19647.08h.29m.35s.440] Discard all samples (playback) or generate zero samples (capture) [19647.08h.29m.35s.440] sysdefault:CARD=Output [19647.08h.29m.35s.440] Audio Output, [19647.08h.29m.35s.440] Default Audio Device

here is the related sections in dts file:

...
 sound-tlv320dac31 {
 compatible = "simple-audio-card";
 simple-audio-card,name = "Audio Output";
 simple-audio-card,format = "i2s";
 simple-audio-card,bitclock-master = <&sound_codec>;
 simple-audio-card,frame-master = <&sound_codec>;
 simple-audio-card,widgets = "Headphone", "Headphone Jack"; simple-audio-card,routing =
 "Headphone Jack", "HPL",
 "Headphone Jack", "HPR";

 simple-audio-card,cpu {
 sound-dai = <&sai3>;
 };

 sound_codec: simple-audio-card,codec {
 sound-dai = <&tlv320aic31xx>;
 system-clock-frequency = <12000000>; /* this matches sai3 */
 };
 };

&i2c4 {
 clock-frequency = <400000>;
 pinctrl-names = "default", "gpio";
 pinctrl-0 = <&pinctrl_i2c4>;
 pinctrl-1 = <&pinctrl_i2c4_gpio>;
 scl-gpios = <&gpio5 20 GPIO_ACTIVE_HIGH>;
 sda-gpios = <&gpio5 21 GPIO_ACTIVE_HIGH>;
 status = "okay";

 tlv320aic31xx: tlv320aic31xx@18 {
 #sound-dai-cells = <0>;
 compatible = "ti,tlv320dac3100";
 reg = <0x18>;

 reset-gpios = <&gpio4 29 GPIO_ACTIVE_LOW>;
 };
};

 pinctrl_i2c4: i2c4grp {
 fsl,pins = <
 MX8MN_IOMUXC_I2C4_SCL_I2C4_SCL 0x400001c3
 MX8MN_IOMUXC_I2C4_SDA_I2C4_SDA 0x400001c3
 >;
 };

 pinctrl_i2c4_gpio: i2c4grp-gpio {
 fsl,pins = <
 MX8MN_IOMUXC_I2C4_SCL_GPIO5_IO20 0x1c3
 MX8MN_IOMUXC_I2C4_SDA_GPIO5_IO21 0x1c3
 >;
 };
 pinctrl_sai3: sai3grp {
 fsl,pins = <
 MX8MN_IOMUXC_SAI3_TXFS_SAI3_TX_SYNC 0xd6
 MX8MN_IOMUXC_SAI3_TXC_SAI3_TX_BCLK 0xd6
 MX8MN_IOMUXC_SAI3_MCLK_SAI3_MCLK 0xd6
 MX8MN_IOMUXC_SAI3_TXD_SAI3_TX_DATA0 0xd6
 >;
 };
&sai3 {
 #sound-dai-cells = <0>;
 pinctrl-names = "default";
 pinctrl-0 = <&pinctrl_sai3>;
 assigned-clocks = <&clk IMX8MN_CLK_SAI3>;
 assigned-clock-parents = <&clk IMX8MN_AUDIO_PLL1_OUT>;
 assigned-clock-rates = <12000000>;
 clocks = <&clk IMX8MN_CLK_SAI3_IPG>, <&clk IMX8MN_CLK_DUMMY>,
 <&clk IMX8MN_CLK_SAI3_ROOT>, <&clk IMX8MN_CLK_DUMMY>,
 <&clk IMX8MN_CLK_DUMMY>, <&clk IMX8MN_AUDIO_PLL1_OUT>,
 <&clk IMX8MN_AUDIO_PLL2_OUT>;
 clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3", "pll8k", "pll11k";
 fsl,sai-asynchronous;
 status = "okay";
};

11 months ago

0 Kevin Lu 11 months ago

TI__Intellectual 1840 points

Hi Ophir,

Can you let me know which driver code you used currently, because I didn't found that log message in my code from ti.com,

About the DTS, please follow the example of this note https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/Documentation/devicetree/bindings/sound/tlv320aic31xx.txt

You can do the same.

Thanks

Kevin

0 Ophir Carmi 10 months ago in reply to Kevin Lu

Prodigy 10 points

ok, we fixed some issues in our hardware and now I don't get the error I mentioned before ("Unable to sync registers").

[19653.09h.03m.44s.640] root@imx8mnddr4evk:~# dmesg | grep -i tlv
[19653.09h.03m.50s.285] [ 4.977660] asoc-simple-card sound-tlv320dac31: tlv320dac31xx-hifi <-> 30030000.sai mapping ok
[19653.09h.03m.50s.285] [ 4.986313] asoc-simple-card sound-tlv320dac31: ASoC: no DMI vendor name!

However, no sound is being played when using aplay.

any suggestions?

0 Kevin Lu 10 months ago in reply to Ophir Carmi

TI__Intellectual 1840 points

Hi Ophir,

There's three key information you can share to us:

1. What printed log you can see after entering aplay?

2. The register dump for page0 and page1 after entering aplay, use i2cdump command to capture rigisters,

3. The i2s clock details, sample rate, BCLK ?

Thanks

Kevin

Audio

Audio forum

TLV320DAC3100: Trying to play sound, got from codec "Unable to sync registers 0x1b-0x1b. -6"