Prevent kernel panic

[dbrock89]

Dtoverlay line has the incorrect punctuation mark causing kernel panics when using normal shutdown command.

Should be as follows:

dtoverlay=gpio-poweroff:gpiopin="22",active_low="y"

[Camble]

I'm unable to find any documentation to support the requirement for a colon after poweroff, or quotes around the gpio pin. Can you provide a link?

[Camble]

Scratch that, I've found the documentation