我用的rk3308b-cc的开发板，选择的声卡dts如下:
vad_acodec_sound: vad-acodec-sound {
status = “okay”;
compatible = “rockchip,multicodecs-card”;
rockchip,card-name = “rockchip,rk3308b-acodec”;
rockchip,codec-hp-det;
rockchip,mclk-fs = <256>;
rockchip,cpu = <&i2s_8ch_2>;
rockchip,codec = <&acodec>, <&vad>;
};
我的实验现象是
&acodec {
rockchip,micbias1;
rockchip,micbias2;
rockchip,en-always-grps = <0 1 2 3>;
rockchip,adc-grps-route = <3 1 0 2>;
/rockchip,adc-grps-route = <1 3 0 2>;/
/rockchip,adc-grps-route = <1 0 3 2>;/ /micp3/
/rockchip,adc-grps-route = <3 0 1 2>; micp8/
/delete-property/rockchip,loopback-grp;
};
中的rockchip,adc-grps-route属性的3在最前面那么我的mic7,mic8就有声音但是mic4没声音，1在前面mic4就有声音，mic7和mic8没有声音，然后我看到论坛的其他的帖子说这个和rockchip,det-channel属性有关系，若是我想用这个声卡采集4个mic的声音的话是不是不行，因为这个声卡只能采集2个mic的？若是要采集4mic的话，是不是要用下面的声卡:
vad-sound {
status = “disabled”;
compatible = “rockchip,multicodecs-card”;
rockchip,card-name = “rockchip,rk3308-vad”;
rockchip,cpu = <&pdm_i2s_dais>;
rockchip,codec = <&acodec>, <&vad>;
};
但是我发现这个声卡还是和acodec有关系是不是也不行，总结的问题如下：
-
我想采集4个mic的声音的话，选择下面的那个声卡合适：
pdm_i2s_dais: pdm-i2s-dais {
status = “okay”;
compatible = “rockchip,rk3308-multi-dais”, “rockchip,multi-dais”;
dais = <&pdm_8ch>, <&i2s_8ch_2>;
capture,channel-mapping = <6 2>;
playback,channel-mapping = <0 2>;
bitclock-inversion = <1 0>;
};pdm-mic-array {
status = “disabled”;
compatible = “simple-audio-card”;
simple-audio-card,name = “rockchip,pdm-mic-array”;
simple-audio-card,cpu {
sound-dai = <&pdm_8ch>;
};
simple-audio-card,codec {
sound-dai = <&dummy_codec>;
};
};vad-sound {
status = “disabled”;
compatible = “rockchip,multicodecs-card”;
rockchip,card-name = “rockchip,rk3308-vad”;
rockchip,cpu = <&pdm_i2s_dais>;
rockchip,codec = <&acodec>, <&vad>;
};vad_acodec_sound: vad-acodec-sound { status = "okay"; compatible = "rockchip,multicodecs-card"; rockchip,card-name = "rockchip,rk3308b-acodec"; rockchip,codec-hp-det; rockchip,mclk-fs = <256>; rockchip,cpu = <&i2s_8ch_2>; rockchip,codec = <&acodec>, <&vad>; }; -
若是vad_acodec_sound声卡可以的话，为什么我只能采集mic7 mic8的声音(rockchip,adc-grps-route属性3写在最前面且rockchip,det-channel = <0>;)？
