SAI without Control

[helioslopez]

Hi,

I have the 3 SAI, connected to different devices:

SAI1 --> Codec

SAI2 --> Telit module, GE910

SAI3 --> Telit module, GE910

How do you setup the device tree for a SAI that it is connected directly to another SAI without control? 

I think my problem is due to the rooting and widget

[ 3630.791599] asoc-simple-card sound@2: 202c000.sai <-> 202c000.sai mapping ok
[ 3630.798779] asoc-simple-card sound@2: ASoC: no source widget found for SPK_LP
[ 3630.805996] asoc-simple-card sound@2: ASoC: Failed to add route SPK_LP -> direct -> Speaker
[ 3630.814402] asoc-simple-card sound@2: ASoC: no sink widget found for LINPUT1
[ 3630.821490] asoc-simple-card sound@2: ASoC: Failed to add route Mic Jack -> direct -> LINPUT1
[ 3630.830053] asoc-simple-card sound@2: ASoC: no sink widget found for RINPUT1
[ 3630.837117] asoc-simple-card sound@2: ASoC: Failed to add route Mic Jack -> direct -> RINPUT1

Any idea how should look my device tree?

This is what i got so far

codec_test: codec_test {
compatible = "linux,snd-soc-dummy";
#sound-dai-cells = <0>;
status="okay";
};
sound0: sound@0 {
status="okay"
compatible = "simple-audio-card";
model = "nau8810-audio";
simple-audio-card,name = "default";
simple-audio-card,format = "i2s";
simple-audio-card,bitclock-master = <&dailink0_master>;
simple-audio-card,frame-master = <&dailink0_master>;
simple-audio-card,widgets =
"Speaker", "Speaker";
simple-audio-card,routing =
"Speaker", "Speaker";

simple-audio-card,cpu {
sound-dai = <&sai1>;
};

dailink0_master: simple-audio-card,codec {
sound-dai = <&codec>;
clocks = <&clks IMX6UL_CLK_SAI1>;
};
};
sound1: sound@1 {
status = "okay";
compatible = "simple-audio-card";
model = "default";
simple-audio-card,name = "Modem1";
simple-audio-card,format = "i2s";
simple-audio-card,bitclock-master = <&dailink1_master>;
simple-audio-card,frame-master = <&dailink1_master>;
simple-audio-card,widgets =
// "Microphone", "Mic Jack",
"Speaker", "Speaker";
simple-audio-card,routing =
// "Speaker", "SPK_LP",
// "LINPUT1", "Mic Jack",
// "RINPUT1", "Mic Jack",
// "Microphone", "Microphone",
"Speaker", "Speaker";

simple-audio-card,cpu {
sound-dai = <&sai3>;
};
dailink1_master: simple-audio-card,codec {
sound-dai = <&codec_test>;
clocks = <&clks IMX6UL_CLK_SAI3>;
};
};
sound2: sound@2 {
status = "okay";
compatible = "simple-audio-card";
model = "default";
simple-audio-card,name = "Modem2";
simple-audio-card,format = "i2s";
simple-audio-card,bitclock-master = <&dailink2_master>;
simple-audio-card,frame-master = <&dailink2_master>;
simple-audio-card,widgets =
"Microphone","Microphone Jack",
"Headphone","Headphone Jack";
simple-audio-card,routing =
"MIC_IN","Microphone Jack",
"Headphone Jack","HP_OUT";
simple-audio-card,cpu {
sound-dai = <&sai2>;
};
dailink2_master: simple-audio-card,codec {
sound-dai = <&codec_test>;
clocks = <&clks IMX6UL_CLK_SAI2>;
};
};

};

&i2c4 {
clock_frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c4>;
status = "okay";

codec: nau8810@1a {
#sound-dai-cells = <0>;
compatible = "nuvoton,nau8810";
reg = <0x1a>;
//wlf,shared-lrclk;
};
eeprom: at24c02@50 {
compatible = "microchip,24c02";
reg = <0x50>;
pagesize = <16>;
// Use this for readonly access
//readonly;
};
};

&sai1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sai1>;
assigned-clocks = <&clks IMX6UL_CLK_SAI1_SEL>,
<&clks IMX6UL_CLK_SAI1>;
assigned-clock-parents = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
assigned-clock-rates = <0>, <12288000>;
fsl,sai-mclk-direction-output;
fsl,sai-synchronous-rx;
fsl,mode = "i2s-master";
sai-index = <1>;
status = "okay";
};

&sai2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sai2>;
assigned-clocks = <&clks IMX6UL_CLK_SAI2_SEL>,
<&clks IMX6UL_CLK_SAI2>;
assigned-clock-parents = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
assigned-clock-rates = <0>, <12288000>;
fsl,sai-mclk-direction-output;
fsl,sai-synchronous-rx;
fsl,mode = "i2s-master";
sai-index = <2>;
status = "okay";
};

&sai3 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sai3>;
assigned-clocks = <&clks IMX6UL_CLK_SAI3_SEL>,
<&clks IMX6UL_CLK_SAI3>;
assigned-clock-parents = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
assigned-clock-rates = <0>, <12288000>;
fsl,sai-mclk-direction-output;
fsl,sai-synchronous-rx;
fsl,mode = "i2s-master";
sai-index = <3>;
status = "okay";
};#

[igorpadykov]

Hi Helios

example with "simple-audio-card" configuration can be found on

i.MX7Dual + SGTL5000 no data on SAI output 

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

[helioslopez]

Dear Igor,

Thank you very much for your response, the link you send me i already saw it. In that setup there is only one codec, when in mine i got the codec plus 2 audio devices, GSM modems. Those don't have I2C control and there are not a Codec either. I think I need to use a dummy codec, this is why i used the linux,snd-soc-dummy or should i use snd-soc-dummy-dai? Not 100% sure what driver i should use either.

Any suggestion will be appreciated!!!