No master clock (MCLK) GPIO for hfp_hf example (IDFGH-13125)

[abel-belay]

Answers checklist.

• [X] I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• [X] I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• [X] I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

I'm trying to run the hfp_hf example on a ESP32-DevKitC and a PMOD I2S2 codec. The codec requires a master clock (MCLK) input but the example does not assign the master clock to any pin and does not provide a way of doing so.

[esp-qing]

Hi, Sorry for replying so late. Which audio data path are you using (PCM or HCI)?