[U-Boot-Users] why disable icache when erase syncflash in mx1ads

just now,i get the latest u-boot ,it has supported mx1ads,but i can not understand the code as follows,in board/mx1ads/flash.c: int flash_erase (flash_info_t * info, int first,int last) { ............... icache_disable(); ............. }

I do nto know why disable the icache before erasing the Flash!