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Date:   Fri, 18 Dec 2020 10:08:54 -0400
From:   Jason Gunthorpe <jgg@nvidia.com>
To:     Mark Brown <broonie@kernel.org>
CC:     Greg KH <gregkh@linuxfoundation.org>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
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Subject: Re: [resend/standalone PATCH v4] Add auxiliary bus support
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On Fri, Dec 18, 2020 at 01:17:09PM +0000, Mark Brown wrote:

> As previously discussed this will need the auxilliary bus extending to
> support at least interrupts and possibly also general resources.

I thought the recent LWN article summed it up nicely, auxillary bus is
for gluing to subsystems together using a driver specific software API
to connect to the HW, MFD is for splitting a physical HW into disjoint
regions of HW.

Maybe there is some overlap, but if you want to add HW representations
to the general auxillary device then I think you are using it for the
wrong thing.

Jason