device-tree for dummy codec on AUDMUX4

jpiat — Tue, 02 Jan 2018 21:57:34 GMT

Hi,

i'am trying to modify the device-tree for my IMX6 quad platform to initialize a dummy codec on AUDMUX 4 to generate raw i2s traffic to/from an FPGA. The following is what i added to my device-tree (plus pin muxing) :

codec_test: codec_test {
compatible = "linux,snd-soc-dummy";
#sound-dai-cells = <0>;
};

sound-i2s {
compatible = "simple-audio-card";
simple-audio-card,name = "simpleSSI";
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,format = "i2s";
simple-audio-card,bitclock-master = <&dailink_master>;
simple-audio-card,frame-master = <&dailink_master>;
simple-audio-card,mclk-fs=<64>;
mux-int-port = <1>;
mux-ext-port = <4>;
simple-audio-card,cpu {
sound-dai = <&ssi1>;
};
dailink_master: simple-audio-card,codec {
sound-dai = <&codec_test>;
};
};

&ssi1 {
fsl,mode = "i2s-master";
status = "okay";
};

the file compiles with no problem but after boot i don't get the corresponding ALSA device. The devices appears in /proc/device-tree through. Any idea of what i 'am missing ?

Re: device-tree for dummy codec on AUDMUX4

igorpadykov — Wed, 03 Jan 2018 07:19:03 GMT

Hi Piat

dummy codec is not supported in nxp linux releases and this may be also

posted on meta-fsl-arm mailing list, so that someone familiar with it could try to assist you.
https://lists.yoctoproject.org/listinfo/meta-freescale

Best regards
igor
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device-tree for dummy codec on AUDMUX4

Re: device-tree for dummy codec on AUDMUX4