Hello
I compiled the zephyr example ../zephyr/samples/drivers/i2s/output
The SCK and MCK Signal do have both the same frequency.
The bit positioin on MSB in not in the first or 2nd clock.
Looks like SCK has the double freq than it should.

Pleas help to configure
/* Configure I2S stream */
printk("Configure I2S stream\n");
i2s_cfg.word_size = 16;
i2s_cfg.channels = 2;
i2s_cfg.format = I2S_FMT_DATA_FORMAT_I2S ;
i2s_cfg.frame_clk_freq = 44100;
i2s_cfg.block_size = BLOCK_SIZE;
i2s_cfg.timeout = 1000;