root@Cubian:~# dmesg | grep -i apb1
[    0.385490] [ccu-inf] script config apb1 to 96MHz
[    0.388985] [ccu-inf] apb1 0 clock was 24000000
[    0.389208] [ccu-inf] apb1 new parent clock is 576000000
[    0.390373] [ccu-inf] apb1 new config preDiv 1 ClkDiv 2
[    0.391370] [ccu-inf] apb1 new clock is 96000000