RFC: Pin (mis)configuration

[Stefan Wahren]

Hi,

recently we stumbled about some pins ([1], [2]) on the Raspberry Pi 3 which are controlled by the firmware and shouldn't be changed by Linux. So based on the dt-blob.dts [3] i created a reference table for those affected pins in order to avoid such issues in the future [4].

It would be nice if someone could review this table.

After that i suggest the following steps:

1. Publish this reference on the firmware wiki at Github
2. Add comments in order to mark the relevant pins in the DTS files as reserved

Regards
Stefan

[1] - http://lists.infradead.org/pipermail/linux-rpi-kernel/2016-November/004742.html
[2] - http://www.spinics.net/lists/devicetree/msg164398.html
[3] - https://github.com/raspberrypi/firmware/blob/master/extra/dt-blob.dts
[4] - https://gist.github.com/lategoodbye/7f69fe3a18e173c6251d81a12168e5e4