How to deassert WDOG-output-signal of iMX25

[makotofujimoto]

According to iMX25 Reference Manual,WDOG-output-signal is deasserted after POR-input-signal is asserted.

(Refer to Figure 48-10 "WDOG Time-Out Condition/WDT Bit Is Set") I want to deassert WDOG-output-signal after the watchdog-timeout occurs.

To do so,iMX25 needs POR-input-signal.

But I want to keep all Powers for iMX25 ON.(Don't want to power off all Powers) Can I assert POR-input-signal as all Powers ON. (without doing Power-OFF and Power-ON) And Can I connect WDOG-output-signal to POR-input-signal to deassert WDOG.

Best Regards

[igorpadykov]

Hi makoto

it is not possible to disable and then reinitialize wdog

as some bits (like WDE- enable) are once write. Regarding connection

WDOG-output-signal to POR-input-signal, one can try solution used

on i.MX6 SabreSD schematic spf-27392 p.21 with U507 buffer.

Other solution may be reinit wdog signal as gpio using pin multiplexing

with IOMUX registers.

Best regards

igor

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