[PATCH] eng: Add register block specification types

[Chris Johns]

On 13/9/21 4:38 pm, Sebastian Huber wrote:
> This approach is not limited to memory mapped register blocks.

I think it is.

I would like to understand how bus types other than "memory" are specified for a
generic device driver that needs to handle bus variability. I am concerned this
is bespoke to a limited range of devices and use cases. If this is the case lets
understand that.

I would be interested to see how the ns16550 driver would be specified and then
generated to match how it is currently used:

https://git.rtems.org/rtems/tree/bsps/shared/dev/serial/ns16550.c

Note, it is selected because it maps to IO instructions and memory mapped IO bus
architectures.

Chris