Re: [RFC PATCH v2 3/4] pinctrl: renesas: pinctrl-rzg2l: Add IRQ domain to handle GPIO interrupt

["Lad, Prabhakar" <prabhakar.csengg@xxxxxxxxx>]

Hi Linus,

Thank you for the review.

On Thu, Sep 23, 2021 at 10:38 PM Linus Walleij <linus.walleij@xxxxxxxxxx> wrote:
>
> On Tue, Sep 21, 2021 at 9:30 PM Lad Prabhakar
> <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx> wrote:
>
> > Add IRQ domian to RZ/G2L pinctrl driver to handle GPIO interrupt.
> >
> > GPIO0-GPIO122 pins can be used as IRQ lines but only 32 pins can be
> > used as IRQ lines at given time. Selection of pins as IRQ lines
> > is handled by IA55 (which is the IRQC block) which sits in between the
> > GPIO and GIC.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>
> Why can't you just use the hierarchical IRQ domain handling inside
> gpiolib?
>
Will do that in the next version.

> See for example drivers/gpio/gpio-ixp4xx.c for an example of how this
> is used.
>
Thank you for the pointer.

Cheers,
Prabhakar