Re: [PATCH 2/2] dt-bindings: Add clock guard DT description

[Conor Dooley]

On Thu, Mar 19, 2026 at 06:50:52AM +0100, Vyacheslav Yurkov wrote:
> On 18.03.2026 23:55, Rob Herring wrote:
> > On Wed, Mar 18, 2026 at 05:43:40PM +0000, Vyacheslav Yurkov wrote:
> > > Describe device tree binding for virtual clock controller guard.
> > No idea what this means. Please explain how I would identify this h/w.
> > 
> > We generally don't do bindings for virtual devices and we don't do
> > single clock bindings (other than some we are stuck with).
> > 
> 
> I described a use case in my cover letter (PATCH 0). Perhaps our approach to
> tackle the issue is not correct in the first place. The term "virtual clock
> controller guard" is something we named it, but it's literally just a clock
> provider which combines several other clocks and input GPIO signals in order
> for the consumers to check whether they are allowed to probe already or have
> to wait until the input clocks are enabled.

Can you explain how this is different to gpio-gate-clock? AFAICT, you're
trying to support clocks that are enabled by a gpio, and that's what it
is for.

> 
> So in essence it's like a helper driver to simplify consumers probe
> procedure. Does it make sense? If you don't do bindings for virtual HW, how
> else would you approach this?

Attachment: signature.asc
Description: PGP signature