Re: [PATCH 01/28] mfd: Add Microchip ZL3073x support

Andy Shevchenko
2025-04-14T14:13:49Z

On Mon, Apr 14, 2025 at 5:10 PM Andy Shevchenko
<andy.shevchenko@gmail.com> wrote:
>
> On Mon, Apr 14, 2025 at 5:07 PM Ivan Vecera <ivecera@redhat.com> wrote:
> > On 14. 04. 25 1:52 odp., Ivan Vecera wrote:
>
> ...
>
> > Long story short, I have to move virtual range outside real address
> > range and apply this offset in the driver code.
> >
> > Is this correct?
>
> Bingo!
>
> And for the offsets, you form them as "page number * page offset +
> offset inside the page".

Note, for easier reference you may still map page 0 to the virtual
space, but make sure that page 0 (or main page) is available outside
of the ranges, or i.o.w. ranges do not overlap the main page, even if
they include page 0.

--
With Best Regards,
Andy Shevchenko