Change of frequency of AUDIO_I2S_SRCLK_3V3 pin


I would like to change the frequency of the pin AUDIO_I2S_SRCLK_3V3 pin found on the J21 Header. Right now am measuring a frequency of 1.41 MHz but I would like to change it to 2.048 MHz.

How should I proceed?

You can set the clock by API clk_get_rate()/clk_set_rate() the you can find the clock name from device tree.
For debug you can set try below debug node.