[PATCH 2/6] dt-bindings: gpio: add binding for the GPIO block for Apple Mac SMC

[Russell King (Oracle)]

On Thu, Sep 01, 2022 at 06:11:30PM +0300, Krzysztof Kozlowski wrote:
> On 01/09/2022 16:54, Russell King (Oracle) wrote:
> > Add the DT binding for the Apple Mac System Management Controller GPIOs.
> > 
> > Signed-off-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>
> > ---
> >  .../devicetree/bindings/gpio/gpio-macsmc.yaml | 28 +++++++++++++++++++
> >  .../devicetree/bindings/mfd/apple,smc.yaml    |  4 +++
> >  2 files changed, 32 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/gpio/gpio-macsmc.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/gpio/gpio-macsmc.yaml b/Documentation/devicetree/bindings/gpio/gpio-macsmc.yaml
> > new file mode 100644
> > index 000000000000..ee620fe50ca8
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/gpio/gpio-macsmc.yaml
> > @@ -0,0 +1,28 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/gpio/gpio-macsmc.yaml#
> 
> filename based on the compatible... which is missing here, so this leads
> to the question - why this is separate device/child node? It won't bind
> to anything, won't be populated, right?

The node is a child of the apple,smc mfd device, and is referenced from
that description. Should this be embedded in the DT description for the
apple,smc device?

It'll also have other nodes as well, for the RTC etc.

Thanks.

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