i.MX6 Quad reset time in serial downloader mode when WDOG_ENABLE=1

[m_c]

In figure 8-2 USB Boot Flow of IMX6DQRM Rev. 2, it said ARM core will reset if no any activity within 32 seconds when WDOG_ENABLE=1. However, in ERR006282 of IMX6DQCEC Rev. 4. The workaround #2 said, the Watchdog timer begins a 90-second countdown and, if nothing interrupts this process, the part resets.

1. The 32 and 90 seconds. Which one is right?

2. Is this delay time can change or not?

[igorpadykov · Accepted solution]

Hi m.c.

1. 90sec

2. yes, from sect.70.5.1.1 IMX6DQRM  :

..The timeout value can be changed at any point..

Best regards

igor

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[m_c]

Is this timeout value will remain after cold reboot (power off, then power on)?