Re: [PATCH 0/2] Enable MMIO GPIO on BCMBCA

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Tue, Sep 17, 2024 at 8:13 PM William Zhang
<william.zhang@xxxxxxxxxxxx> wrote:

> If we upstream more elaborated driver later,  it will be a dedicated gpio
> controller driver and not use this basic mmio gpio and we can have
> the new compatible.

Thinking of it, in that case the driver would just use one reg = <>
property for the whole I/O range used by the chip and then it need
a new compatible anyway. Let's drop this for now. I'll switch over
to the old compatible.

It seems the approach taken with this SoC is a combination of
simple GPIO and a separate extint (external interrupt) unit, so
it does not need GPIOs to be able to trigger interrupts, which
was my major worry.

Yours,
Linus Walleij