[RFC PATCH 4/9] powerpc/4xx: Create 4xx pseudo-platform in platforms/4xx

[Arnd Bergmann]

On Mon, Feb 20, 2017 at 3:34 AM, Nicholas Piggin <npiggin at gmail.com> wrote:
> On Fri, 17 Feb 2017 17:32:14 +1100
> Michael Ellerman <mpe at ellerman.id.au> wrote:
>
>> We have a lot of code in sysdev for supporting 4xx, ie. either 40x or
>> 44x. Instead it would be cleaner if it was all in platforms/4xx.
>>
>> This is slightly odd in that we don't actually define any machines in
>> the 4xx platform, as is usual for a platform directory. But still it
>> seems like a better result to have all this related code in a directory
>> by itself.
>
> What about the other things in sysdev that support multiple platforms?

Some of them have subsystem specific directories in drivers these
days, e.g. drivers/pci/host and drivers/irqchip. Some others that are
shared with ARM or ARM64 platforms are already being moved to
drivers/soc/

> Why not just put the new 4xx subdirectory under sysdev?

arch/powerpc/platforms/40x/ only has four small C files, you could also
move everything to platforms/4xx/ instead.

     Arnd