Re: [RFC 1/8] dt-bindings: usb: qcom,dwc3: Add bindings to enable runtime

[Krishna Kurapati PSSNV]

On 11/3/2023 12:10 AM, Caleb Connolly wrote:
> > Hi Caleb,
> >
> >    There are two types of platforms, some use extcon and some use 
> > role-switch to deliver vbus/id notifications. Extcon targets already 
> > have this qscratch modifications present today in vbus and id 
> > handlers. But for role-switch based targets we don't have any way to 
> > get this notification to dwc3-qcom. In this implementation, I wanted 
> > to get those notications from core to glue and for this we implenented 
> > vendor hooks.
> >
> > The property added has been used to do two things:
> >
> > 1. Register glue's vendor hooks to core driver
> > 2. Do runtime_allow for glue (and by default for core as the dt is not 
> > flattened)
> >
> > In case of extcon, we don't want to register vendor hooks as 
> > notifications are not necessary.
>
> Could it just be enabled when role_switch is present then?
> >

So we would register vendor hooks when usb-role-switch is present but 
don't do runtime allow, and leave that option to user space right ?
I think it would work and we can do away with the binding completely.

Will wait for comments from other folks as well on this approach.

Thanks for the review,
Krishna,