irq/43-mmc1 firing despite of engaged WiFi killswitch
With WiFi and modem both off, powertop reports irq/43-mmc1 (hwirq 23) as one of the most frequent wake-up reasons on an idle system:
Usage Events/s Category Description
3.2 ms/s 31.8 Process [irq/43-mmc1]AFAIK mmc1 is the WiFi's SDIO interface.
The first suspicion was on broken-cd clause in device tree, but applying !112 (closed) does not help.