Il 10/09/2014 12:26, Alexander Graf ha scritto: > > It's not even clear to me that E500 CCSR devices should be sysbus, in > > fact... > > The problem if you continue that thought process is that we'd end up > with 500 different buses and 500 different uart boilerplate devices just > to fit into the respective buses ;).
True. The alternative is to hardcode the knowledge of the spec in the management layers (since you cannot do index=0|1, you have to do something akin to iobase=0x3f8 for the x86 COM1 port). I guess you will still need two sysbuses so that you get the correct hierarchy in the device tree, right? And we're back to the beginning of the discussion: the distinction between a "sysbus" and a "platform bus" disappears, and in fact it even feels more accurate to just call these things "sysbuses"... Paolo
