This is what we found on Wikipedia regarding the High Fade:

Hi-top fade is a haircut where hair on the sides is cut off or kept very short while hair on the top of the head is grown long.

The hi-top was a trend during the golden age of hip hop and urban contemporary music of the 1980s and the early 1990s. It was common among young African American males between 1986 and 1993 and to a lesser extent in the mid–1990s (1994–1996).

The hi-top fade is commonly called a crew cut, due to the great likeness of the two styles. In fact, the hi-top fade could qualify as a variation on the flattop.