# cat /sys/kernel/debug/clk//clk_summary | head
                                 enable  prepare  protect                                duty  hardware
   clock                          count    count    count        rate   accuracy phase  cycle    enable
-------------------------------------------------------------------------------------------------------
 xtal                                 6        6        0    24000000          0     0  50000         Y
    ff803000.serial#xtal_div          1        1        0    12000000          0     0  50000         Y
       ff803000.serial#use_xtal       1        1        0    12000000          0     0  50000         Y
          ff803000.serial#baud_div       1        1        0      115385          0     0  50000         Y
    cts_oscin                         0        0        0    24000000          0     0  50000         Y
       g12a_ao_cec_pre                0        0        0    24000000          0     0  50000         N
          g12a_ao_cec_div             0        0        0       32742          0     0  50000         Y