On 2/8/19 2:52 AM, Uwe Kleine-König wrote:
Hello, it's unclear to me, which bits I am supposed to set in the bootstatus member of struct watchdog_device at probe time. The i.MX watchdog differentiates the following reset causes: - Power On
None.
- external reset
None.
- watchdog timeout
WDIOF_CARDRESET
- software reset using a bit in the watchdog register set (Not all i.MX variants implement all bits according to the respective reference manuals.) Should "Power On" result in setting WDIOF_POWERUNDER?
No.
Should "software reset [...]" result in WDIOF_CARDRESET?
That would be the best fit if you want a bit to be set, but it would be misleading since it would suggest that the watchdog fired.
Should "external reset" result in WDIOF_EXTERN1? (I guess that no)
No. Overall, the bits are only to be set if the reset was triggered by the watchdog controller. Guenter
