########## baseline (unfixed) ##########
===== mode ok =====
DF-4857 mode=ok: FirmwareInfo.usReferenceClock=2700 -> spll.reference_freq=2700
  engine_clock=750000 reference_clock=2700 ref_div=1 post_div=0x0 -> fbdiv=18204444 (0x115c71c)
  vCG_SPLL_FUNC_CNTL_3=0x1115c71c
completed without trap
exit=0
===== mode zero =====
Illegal instruction (core dumped)
exit=132

########## fixed (-DFIX_DF4857) ##########
===== mode ok =====
DF-4857 mode=ok: FirmwareInfo.usReferenceClock=2700 -> spll.reference_freq=2700
  engine_clock=750000 reference_clock=2700 ref_div=1 post_div=0x0 -> fbdiv=18204444 (0x115c71c)
  vCG_SPLL_FUNC_CNTL_3=0x1115c71c
completed without trap
exit=0
===== mode zero =====
DF-4857 mode=zero: FirmwareInfo.usReferenceClock=0 -> spll.reference_freq=0
FIX_GUARD: reference_clock==0 rejected (rv=-EINVAL), no division
completed without trap
exit=0
RUN_DONE
===signal detail===
raw_exit=132
Illegal instruction (core dumped)