Re: [PATCH v2 2/2] gpio: aggregator: add gpio-aggregator DT compatible

[Bartosz Golaszewski]

On Wed, Feb 11, 2026 at 11:13 AM Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote:
>
> >>
> >>  static const struct of_device_id gpio_aggregator_dt_ids[] = {
> >> +       {
> >> +               .compatible = "gpio-aggregator",
> >> +       },
> >>         {
> >>                 .compatible = "gpio-delay",
> >>                 .data = (void *)FWD_FEATURE_DELAY,
> >> --
> >> 2.43.0
> >>
> >
> > Regardless of the DT bindings - this change is perfectly fine. We do
>
> You cannot have compatible without DT bindings, so this alone is not
> "perfectly fine". Maybe you wanted platform_device_id entry for
> ACPI/legacy/MFD devices?
>

Sure you can, you just can't put it into upstream devicetree sources.
We have had a compatible for gpio-sim for testing purposes for years.
Why would it be illegal to enable matching of platform drivers over DT
for testing purposes?

Bartosz