Re: [PATCH V2 1/2] dt-bindings: usb: xhci: Add optional power-domains

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On Thu, Nov 30, 2023 at 09:50:17AM -0800, Florian Fainelli wrote:
> On 11/30/23 07:42, Stefan Wahren wrote:
> > BCM2711 SoC use a power domain for the xHCI. So allow supplying this
> > domain in bindings.
> > 
> > Signed-off-by: Stefan Wahren <wahrenst@xxxxxxx>
> > Acked-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
> > ---
> >   Documentation/devicetree/bindings/usb/generic-xhci.yaml | 3 +++
> >   1 file changed, 3 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/usb/generic-xhci.yaml b/Documentation/devicetree/bindings/usb/generic-xhci.yaml
> > index 594ebb3ee432..e48beaff7d0d 100644
> > --- a/Documentation/devicetree/bindings/usb/generic-xhci.yaml
> > +++ b/Documentation/devicetree/bindings/usb/generic-xhci.yaml
> > @@ -49,6 +49,9 @@ properties:
> >         - const: core
> >         - const: reg
> > 
> > +  power-domains:
> > +    maxItems: 1
> 
> That works, I am not sure whether we want to key off based upon the
> compatible string, but either way:

If by "key it off" you mean selectively permit "power-domains" based on
the compatible, I think that would be a good idea. There is no bcm2711
specific compatible though at present and I figured there could well be
god-knows-how-many other users of generic-xhci out there that also make
use of power domains, which is why I did not request it of Stefan.

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