Re: [PATCH v3 2/2] mtd: rawnand: ingenic: Limit MTD_NAND_JZ4780 to architecture only

From: Arnd Bergmann
Date: Mon Jul 27 2020 - 13:29:10 EST

On Mon, Jul 27, 2020 at 7:03 PM Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote:
> On Mon, Jul 27, 2020 at 09:55:54AM +0200, Arnd Bergmann wrote:
> >
> > The way we do it on Arm, the machine Kconfig identifiers stay around
> > even for multiplatform targets (which now make up basically actively
> > maintained machines).
> >
> > I don't think it makes any sense for a driver to depend on MIPS_GENERIC:
> > either it is a generic driver that should always be visible or it is specific
> > to a set of SoCs and should depend on some corresponding vendor
> > specific identifiers.
> If support for Ingenic is provided also by MIPS_GENERIC (without
> selecting MACH_INGENIC), then it makes sense. This would be just a
> different way than ARM of building multi-platform kernel.

Yes, it would work just as well, my point was just that it is somewhat
confusing to have every architecture do it differently, and that I
prefer the way Arm (and also ppc, x86 etc) handles it today.

On MIPS, most platforms are not yet part of MIPS_GENERIC, so
they are fairly free to pick whatever method works best and is
consistent with the rest of the kernel.