SWD on ITM data Console H755 400Mhz not work

[GPHIL.1]

Hi,

I need help for this problem :

printf to ITM console doesn't work on nucleo-h755ZI-Q with core clock configured at 400mhz and serial wire configured with the same clock value. The function "__io_putchar" is called, but no data is printed

The same printf to ITM console works on nucleo-h755ZI-Q with core clock configured at 64mhz.

The same printf to ITM console works on nucleo-h753 with core clock configured at 400mhz

Thanks for your help, if you have any suggestions to resolve it.