In our IMX6SX based boards, we are currently experience an occasional (on some boards but not others) loss of content of SNVS_LP registers when we are doing a WDOG reset (with POR). It does not seem to be related to the VDD_VSNVS_IN power source: there are no voltage drops there.
1. Is anyone aware of the possible sources of lp_por signal? It's not very well documented in the Reference Manuals.
2. Does anyone know if the BOOTROM is handling any violations in its default config ?