Re: [Xen-devel] [PATCH v2] xen/arm: register clocks used by the hypervisor

[Julien Grall <julien.grall@xxxxxxx>]

On 05/07/16 14:53, Stefano Stabellini wrote:
> On Thu, 30 Jun 2016, Dirk Behme wrote:
> > +- clocks: one or more clocks to be registered.
> > +  Xen hypervisor drivers might replace native drivers, resulting in
> > +  clocks not registered by these native drivers. To avoid that these
> > +  unregistered clocks are disabled, then, e.g. by clk_disable_unused(),
> > +  register them in the hypervisor node.
> > +  An example for this are the clocks of the serial driver. If the clocks
> > +  used by the serial hardware interface are not registered by the serial
> > +  driver the serial output might stop once clk_disable_unused() is called.
> What if we use the "status" property of the clocks? Could we set it to
> "disabled" in Xen? Would that be enough for Linux to leave them alone?
clocks could be shared between multiple devices. So it is not possible 
to disable the clock.
--
Julien Grall

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