Re: [PATCH v2] arm64: dts: marvell: armada-37xx: Remap IO space to bus address 0x0

Arnd Bergmann
2022-03-10T10:23:03Z

On Thu, Mar 10, 2022 at 11:09 AM Pali Rohár <pali@kernel.org> wrote:
> On Thursday 10 March 2022 11:05:00 Gregory CLEMENT wrote:

> >
> > This patch has been refused by Arnd so I removed it from the mvebu/fixes
> > branch so you should not apply anything on top of it.
>
> Ok, so what is wrong with a change which increase size of IO space to 1 MB?

It should not cause any harm, but there is really no point in this if no known
devices use more than a few bytes, and Linux only maps the first 64KB of
the I/O space for each host bridge. I don't actually see where we limit the
size to 64KB, so maybe that changed recently.

Arnd