aic3x_hw_params(): unable to setup PLL

[marcosal]

Hi, I'm trying to configure an ALSA driver with a dummy codec (hadware doesn't exists in my custom board) and I am using as dummy the codec tlv320aic3x. Kernel 4.9.88.

In the logs I see the ALSA device recognized:

ALSA device list:
#0: tlv320aic3x-audio

Almost everything seems to be fine but when the kernel starts I see error:

fsl-ssi-dai 202c000.ssi: No cache defaults, reading back from HW
imx-tlv320aic3x sound: tlv320aic3x-hifi <-> 202c000.ssi mapping ok
imx-tlv320aic3x sound: Connecting non-supply widget to supply widget is not supported (MIC3L -> Mic Bias)
imx-tlv320aic3x sound: ASoC: no dapm match for MIC3L --> (null) --> Mic Bias
imx-tlv320aic3x sound: ASoC: Failed to add route MIC3L -> direct -> Mic Bias
imx-tlv320aic3x sound: Connecting non-supply widget to supply widget is not supported (MIC3R -> Mic Bias)
imx-tlv320aic3x sound: ASoC: no dapm match for MIC3R --> (null) --> Mic Bias
imx-tlv320aic3x sound: ASoC: Failed to add route MIC3R -> direct -> Mic Bias
tlv320aic3x-codec 1-001b: Unable to sync registers 0x8-0x9. -6

Someone may help me or provide a clue? I'm working with an imx6 solo

This is the dts configuration:

codec in i2c2:

&i2c2 {
clock-frequency = <400000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c2_1>;
status = "okay";

codec: tlv320aic3x@1b {
#sound-dai-cells = <0>;
compatible = "ti,tlv320aic3x";
reg = <0x1b>;
clocks = <&clks 201>;
clock-names = "clko_clk";
IOVDD-supply = <&reg_audio>;
DVDD-supply = <&reg_audio>;
AVDD-supply = <&reg_audio>;
DRVDD-supply = <&reg_audio>;
gpio-reset = <&gpio1 0 1>;
gpio-cfg = <
0x0000 /* 0:Default */
0x0000 /* 1:Default */
0x0013 /* 2:FN_DMICCLK */
0x0000 /* 3:Default */
0x8014 /* 4:FN_DMICCDAT */
0x0000 /* 5:Default */
>;
status = "okay";
};

sound node:

sound {
compatible = "fsl,imx6q-var-som-tlv320aic3x", "fsl,imx-audio-tlv320aic3x";
model = "tlv320aic3x-audio";
ssi-controller = <&ssi2>;
audio-codec = <&codec>;
audio-routing =
/* Headphone connected to HPLOUT, HPROUT */
"Headphone Jack", "HPLOUT",
"Headphone Jack", "HPROUT",
/* Line Out connected to LLOUT, RLOUT */
"Line Out", "LLOUT",
"Line Out", "RLOUT",
/* Mic connected to (MIC3L | MIC3R) */
"Mic Bias", "MIC3L",
"Mic Bias", "MIC3R",
"Mic Jack", "Mic Bias",
/* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
"Line In", "LINE1L",
"Line In", "LINE2L",
"Line In", "LINE1R",
"Line In", "LINE2R";
mux-int-port = <2>;
mux-ext-port = <4>;
};

ssi2 node:

&ssi2 {
cell-index = <1>;
fsl,mode = "i2s-slave";
status = "okay";
};

When I try to play a sound using a raw sound:

cat /bin/test.raw > /dev/audio

I got:

# cat /bin/test.raw > /dev/audio
Division by zero in kernel.
CPU: 0 PID: 113 Comm: cat Not tainted 4.9.88 #180
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
[<8010dfa0>] (unwind_backtrace) from [<8010afc8>] (show_stack+0x10/0x14)
[<8010afc8>] (show_stack) from [<802e8b2c>] (dump_stack+0x84/0x98)
[<802e8b2c>] (dump_stack) from [<802e77fc>] (Ldiv0+0x8/0x14)
[<802e77fc>] (Ldiv0) from [<80558d14>] (aic3x_hw_params+0x1dc/0x4b8)
[<80558d14>] (aic3x_hw_params) from [<80550c5c>] (soc_dai_hw_params+0x28/0x60)
[<80550c5c>] (soc_dai_hw_params) from [<80550e70>] (soc_pcm_hw_params+0x1dc/0x514)
[<80550e70>] (soc_pcm_hw_params) from [<805324c0>] (snd_pcm_common_ioctl1+0xbf8/0x1248)
[<805324c0>] (snd_pcm_common_ioctl1) from [<80532d90>] (snd_pcm_playback_ioctl1+0x280/0x654)
[<80532d90>] (snd_pcm_playback_ioctl1) from [<8053453c>] (snd_pcm_kernel_ioctl+0x78/0x88)
[<8053453c>] (snd_pcm_kernel_ioctl) from [<8053ddc0>] (snd_pcm_oss_change_params+0x6cc/0xb44)
[<8053ddc0>] (snd_pcm_oss_change_params) from [<8053e27c>] (snd_pcm_oss_make_ready+0x44/0x54)
[<8053e27c>] (snd_pcm_oss_make_ready) from [<8053eae8>] (snd_pcm_oss_write+0x44/0x2cc)
[<8053eae8>] (snd_pcm_oss_write) from [<801e9814>] (__vfs_write+0x1c/0x114)
[<801e9814>] (__vfs_write) from [<801e9a80>] (vfs_write+0xa4/0x168)
[<801e9a80>] (vfs_write) from [<801e9c10>] (SyS_write+0x3c/0x90)
[<801e9c10>] (SyS_write) from [<80107480>] (ret_fast_syscall+0x0/0x48)
aic3x_hw_params(): unable to setup PLL
tlv320aic3x-codec 1-001b: ASoC: can't set tlv320aic3x-hifi hw params: -22
cat: write error: Invalid argument

[igorpadykov]

Hi Marcos

for dummy codec one can look on

I2S output on Apalis i.MX6 - Toradex Community 

Simple-card without codec for testing purpose - Patchwork 

Best regards
igor
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[marcosal]

Thanks for the information Igor. I just want to understand why in my code in the file sound/doc/codecs/tlv320aic3x.c line 1115:

codec = (2048 * fsref) / (aic3x->sysclk / 1000);

The variable aic3x->sysclk is zero (causing de división by zero in the code). 

aic3x is set at the beginning of the method aic3x_hw_params in this line:

struct snd_soc_codec *codec = dai->codec;

struct aic3x_priv *aic3x= snd_soc_codec_get_drvdata(codec);

In what part of the device tree that clock is set? Or should be set in other file?

Regards. 

[marcosal]

Sorry I see I am not setting properly the clock. Regards.