Hi Bruno I just noticed your "rtc: pcf2127: add tamper detection support" (03623b4b04) from 5.4. Unfortunately, clearing the BTSE bit breaks a use case of ours:
We rely on the battery switch-over detection to distinguish a powerfail during boot from a PORESET by the external watchdog (in the latter case, the RTC is still powered throughout, meaning there is no battery switch-over event). OTOH, we do not use the tamper detection - in fact, the TS signal is unconnected on our board. We're currently still on 4.19, but we will eventually upgrade to a kernel containing the above commit. So I was wondering if we could figure out a way that would work for both of us - either some CONFIG knob, or perhaps something in the device-tree. Any ideas? Rasmus
