[PATCH] drivers/tty/serial/8250: Make Aspeed VUART SIRQ polarity configurable

[Oskar Senft]

Ok, so it sounds that a default value derived from HW strap for LPC/eSPI
(see discussion on how to access the registers correctly) + sysfs seems to
be ok?

Oskar.

On Sun, Jul 28, 2019 at 10:20 PM Benjamin Herrenschmidt <
benh at kernel.crashing.org> wrote:

> On Mon, 2019-07-29 at 08:51 +0800, Jeremy Kerr wrote:
> > Hi Oskar,
> >
> > > For LPC, the polarity should be set to 1, for eSPI the default of 0 is
> > > correct.
> >
> > Would there ever be a case where different SIRQs need different
> > polarities? If not, we may want this to be global, rather than for each
> > device (the VUART being one...)
>
> Leave it per device. The way to configure this is completely device
> dependent. In fact for most devices it can only be done by the host via
> SIO.
>
> Cheers,
> Ben.
>
>
>
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