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Reset of SNVS_LP on some boards but not others

Question asked by Alexandru Poiana on Nov 14, 2019
Latest reply on Nov 15, 2019 by Wigros Sun

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 ?