Re: [PATCH v3 2/5] uio: dt-bindings: Add binding for "st,stm32f100"

From: Rob Herring
Date: Fri Oct 13 2017 - 16:33:43 EST


On Tue, Oct 10, 2017 at 11:46:52AM +1300, Chris Packham wrote:
> The stm32f100 is a general purpose micro controller. Document a binding
> that allows a user-space driver to be implemented for these devices.

It may be general purpose, but how it is hooked up to the host is not
and probably could be done in a variety of ways. I'd expect that to be
described in a binding doc (that's not a suggestion to add it to this
doc as I'm fundamentally against any binding with "UIO" in it).

Also, while the processor itself is general purpose, typically its
function on a given board would not be except maybe on dev boards. It's
that function (a combination of the uC and its firmware) which we want
to describe to the host OS. There's already examples of uC used as PMICs
or system controllers.

Rob