Re: [PATCH v1 1/1] gpio: Support interrupts in gpio-mlxbf2.c

From: Andrew Lunn
Date: Mon Mar 22 2021 - 09:06:56 EST

On Mon, Mar 22, 2021 at 01:41:58PM +0100, Linus Walleij wrote:
> On Wed, Mar 10, 2021 at 9:38 PM Asmaa Mnebhi <asmaa@xxxxxxxxxx> wrote:
> > > That's fine, the hardware description model (I guess in your case
> > > ACPI) should take care of that.
> > >
> > We cannot really pass it through the ACPI table because the ACPI
> > table is common to all BlueField-2 boards. And each board may have
> > a different GPIO pin associated with a particular function. This is
> > why we use ACPI properties instead of GpioInt(). So that the
> > bootloader can change the GPIO pin value based on the board
> > id detected at boot time.
> (...)
> > Yes. It would belong in the ACPI table if we had a different ACPI
> > table for each board. But unfortunately that is not the case.
> You have to agree with Andy about all ACPI details.
> Andy is the ACPI GPIO maintainer and we cannot merge
> a patch with any kind of ACPI support without his ACK,
> so hash it out as he wants it. The only people on the
> planet that can make me think otherwise is if Rafael
> Wysocki and Mika Westerberg say something else,
> which is *extremely* unlikely.


And given this is burried inside a network driver, you are also going
to get push back from the networking maintainers to do this correctly.