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i.MX233: System freeze after enabling CLKSEQ_BYPASS_CPU

Question asked by lategoodbye on May 6, 2016
Latest reply on Jun 3, 2016 by lategoodbye

Hi,

want to reduce cpu frequency of the i.MX23 (LQFP 128 pin) to 24 MHz for standby. Unfortunately the Linux system (Kernel 4.5) freeze after enabling CLKCTRL_CLKSEQ_BYPASS_CPU.

 

Here a register dump before modifing CLKCTRL_CLKSEQ_BYPASS_CPU:

HW_CLKCTRL_HBUS   = 0x00000003
HW_CLKCTRL_CPU    = 0x00011001
HW_CLKCTRL_CLKSEQ = 0x0000011A
HW_CLKCTRL_EMI    = 0x00000102

 

What could be the reason for this behavior?

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