I2S does't not output bclk and frame-clk

We connected a tlv320aic3204 to I2S1 and another audio codec to I2S4.
tlv320aic3204 is able to playback the audio. But, the another audio codec is not working.

We had try binding tlv320aic3204 to I2S4 and the another audio codec is able to playback the audio!

the codec is configured slave mode Internally. We only need to write a dummy codec but it seem the TX2 does’t not output bclk and frame-clk while using dummy codec.

Any idea please tell me, thanks!

Hello!

Per the following thread, by default L4T uses a dummy codec (SPDIF) for all I2S interfaces on TX2 and so no changes are needed in DT to make the I2S interface drive the pins.

Regards
Jon