Ubuntu
Khadas official images
I can send 8 channels TDM but when I try to read the channels by I2S IN , I capture only 2 channels but the channels there are all in the logical analyzer, why?
**Delete this line and post your answer here.**
**Delete this line and post your log here.**
1 Like
numbqq
November 21, 2022, 2:56am
2
Hello @marcellom66
We will check and feedback here.
numbqq
November 23, 2022, 9:43am
3
Hello @marcellom66
Do you use the I2S pins from the GPIO header? The default configuration for I2S is one lane out and one lane in, so the out and in are all 2 channels, you sure the out is 8 channels and in is 2 channels ?
I changed the overlay for 8 in and 8 out
/ {
fragment@0 {
target = <0xffffffff>;
__overlay__ {
aml-audio-card,dai-link@0 {
mclk-fs = <0x80>;
continuous-clock;
suffix-name = "alsaPORT-spdif";
cpu {
sound-dai = <0xffffffff>;
system-clock-frequency = <0x5dc000>;
};
codec {
sound-dai = <0xffffffff>;
};
};
aml-audio-card,dai-link@1 {
format = "dsp_a";
mclk-fs = <0x40>;
continuous-clock;
bitclock-master = <0xffffffff>;
frame-master = <0xffffffff>;
suffix-name = "alsaPORT-pcm";
cpu {
sound-dai = <0xffffffff>;
dai-tdm-slot-tx-mask = <0x01>;
dai-tdm-slot-rx-mask = <0x01>;
dai-tdm-slot-num = <0x02>;
dai-tdm-slot-width = <0x10>;
system-clock-frequency = <0x7d000>;
phandle = <0x01>;
};
codec {
sound-dai = <0xffffffff>;
phandle = <0x02>;
};
};
aml-audio-card,dai-link@2 {
format = "i2s";
mclk-fs = <0x100>;
continuous-clock;
bitclock-master = <0xffffffff>;
frame-master = <0xffffffff>;
suffix-name = "alsaPORT-i2s-i2s4hdmirx";
cpu {
sound-dai = <0xffffffff>;
dai-tdm-slot-tx-mask = <0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01>;
dai-tdm-slot-rx-mask = <0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01>;
dai-tdm-slot-num = <0x08>;
dai-tdm-slot-width = <0x20>;
system-clock-frequency = <0xbb8000>;
};
codec {
sound-dai = <0xffffffff>;
phandle = <0x03>;
};
};
aml-audio-card,dai-link@3 {
format = "i2s";
mclk-fs = <0x100>;
bitclock-master = <0xffffffff>;
frame-master = <0xffffffff>;
suffix-name = "alsaPORT-i2s4parser";
cpu {
sound-dai = <0xffffffff>;
dai-tdm-slot-tx-mask = <0x01 0x01>;
dai-tdm-slot-rx-mask = <0x01 0x01>;
dai-tdm-slot-num = <0x02>;
dai-tdm-slot-width = <0x20>;
system-clock-frequency = <0xbb8000>;
};
codec {
sound-dai = <0xffffffff>;
phandle = <0x04>;
};
};
aml-audio-card,dai-link@4 {
mclk-fs = <0x40>;
suffix-name = "alsaPORT-pdm";
cpu {
sound-dai = <0xffffffff>;
};
codec {
sound-dai = <0xffffffff>;
};
};
aml-audio-card,dai-link@5 {
mclk-fs = <0x80>;
suffix-name = "alsaPORT-spdifb";
cpu {
sound-dai = <0xffffffff>;
system-clock-frequency = <0x5dc000>;
};
codec {
sound-dai = <0xffffffff>;
};
};
aml-audio-card,dai-link@6 {
mclk-fs = <0x100>;
suffix-name = "alsaPORT-tv";
cpu {
sound-dai = <0xffffffff>;
system-clock-frequency = <0xbb8000>;
};
codec {
sound-dai = <0xffffffff>;
};
};
aml-audio-card,dai-link@7 {
mclk-fs = <0x100>;
continuous-clock;
suffix-name = "alsaPORT-loopback";
cpu {
sound-dai = <0xffffffff>;
system-clock-frequency = <0xbb8000>;
};
codec {
sound-dai = <0xffffffff>;
};
};
};
};
fragment@1 {
target = <0xffffffff>;
__overlay__ {
status = "okay";
};
};
__symbols__ {
tdmacpu = "/fragment@0/__overlay__/aml-audio-card,dai-link@1/cpu";
tdmacodec = "/fragment@0/__overlay__/aml-audio-card,dai-link@1/codec";
tdmbcodec = "/fragment@0/__overlay__/aml-audio-card,dai-link@2/codec";
tdmccodec = "/fragment@0/__overlay__/aml-audio-card,dai-link@3/codec";
};
__fixups__ {
aml_sound = "/fragment@0:target:0";
spdifa = "/fragment@0/__overlay__/aml-audio-card,dai-link@0/cpu:sound-dai:0";
dummy_codec = "/fragment@0/__overlay__/aml-audio-card,dai-link@0/codec:sound-dai:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@1/codec:sound-dai:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@2/codec:sound-dai:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@3/codec:sound-dai:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@4/codec:sound-dai:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@5/codec:sound-dai:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@6/codec:sound-dai:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@7/codec:sound-dai:0";
tdma = "/fragment@0/__overlay__/aml-audio-card,dai-link@1:bitclock-master:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@1:frame-master:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@1/cpu:sound-dai:0";
tdmb = "/fragment@0/__overlay__/aml-audio-card,dai-link@2:bitclock-master:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@2:frame-master:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@2/cpu:sound-dai:0\0/fragment@1:target:0";
tdmc = "/fragment@0/__overlay__/aml-audio-card,dai-link@3:bitclock-master:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@3:frame-master:0\0/fragment@0/__overlay__/aml-audio-card,dai-link@3/cpu:sound-dai:0";
pdm = "/fragment@0/__overlay__/aml-audio-card,dai-link@4/cpu:sound-dai:0";
spdifb = "/fragment@0/__overlay__/aml-audio-card,dai-link@5/cpu:sound-dai:0";
extn = "/fragment@0/__overlay__/aml-audio-card,dai-link@6/cpu:sound-dai:0";
loopbacka = "/fragment@0/__overlay__/aml-audio-card,dai-link@7/cpu:sound-dai:0";
};
};
1 Like
numbqq
November 24, 2022, 1:13am
5
Hello @marcellom66
You sure you can send 8 ch with the SDO pin?
I hear the 440Hz out from all the outputs
numbqq
November 24, 2022, 7:30am
7
Only from the I2S SDO pin?
yes but the problem is when I use aloop from I2S in to I2S out (how you can see in the logic analyer screeshot) the 6 signals audio go to only 2 audio signal, have you examples of tdm use and setups?
