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From: Andrew Jeffery <andrew@aj.id.au>
To: Patrick Venture <venture@google.com>
Cc: Oskar Senft <osk@google.com>, Lei YU <mine260309@gmail.com>,
 OpenBMC Maillist <openbmc@lists.ozlabs.org>,
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Date: Sat, 04 Aug 2018 07:33:33 +0930
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Subject: Re: UART Route setting
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On Sat, 4 Aug 2018, at 00:29, Patrick Venture wrote:
> On Wed, Aug 1, 2018 at 8:33 PM, Andrew Jeffery <andrew@aj.id.au> wrote:
> > On Thu, 2 Aug 2018, at 12:50, Oskar Senft wrote:
> >> Interesting suggestion, that looks promising, thank you?
> >>
> >> What's the state of that driver? I.e. where do we expect it to land?
> >
> > If you think the bmc-misc-ctrl series is useful, please reply to the
> > upstream thread to outline all of your use-cases. There's a lot of push-
> > back on using the devicetree to describe these features, and I haven't
> > had a lot of feedback on the acceptability of the rest (driver itself,
> > userspace ABI).
> >
> > The more evidence we have of this being necessary/useful the better.
> 
> I just skimmed that message, and we're looking for a mechanism to set
> in the kernel some bits in the hwstrapping and other hardware
> registers to do things like restrict P2A ranges, disable lpc2ahb
> stuff, etc.  Things we had hacked into the mach-aspeed.c (iirc), and I
> wasn't sure it made sense to write a half dozen small drivers to
> control these individual things -- would these kind of use cases fall
> under this misc driver?

Yes, everything you listed there was a strong motivation for the series.

Cheers

Andrew