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Watchdog doesn't work at 400Mhz set point on IMX6SL custom board

Question asked by RobHawksFan on Feb 4, 2015
Latest reply on Feb 4, 2015 by igorpadykov

I have a custom board that has a IMX6SL. The design is based on the IMX6SL-EVK design. My board has a PMIC and is running in LDO bypass mode. The watchdog reset seems to work perfect as long as I run  the board at 1Ghz or 800 Mhz. When i manually set the CPU to 400Mhz (cpufreq-set -f 400000) and then try to issue a reset command from w/i linux the watchdog nolonger works. System hangs and I get "Watchdog reset failed to assert reset". Anyone else expierence this problem?  Why does it work at  1Ghz & 800Mhz but not 400Mhz?

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