Re: [PATCH] ARM: sti: stih410-clocks: Add PROC_STFE as a critical clock

Peter Griffin
2016-10-26T08:56:29Z

Hi Lee,

On Wed, 26 Oct 2016, Lee Jones wrote:

> > > > If the clock is enabled when Linux boots, the Linux clock framework *needs*
> > > > to assume the hardware may have been used in previous boot stages, and it should
> > > > not attempt to disable the clock.
> > >
> > > None of the boot loaders we use do this.
> >
> > But the Linux kernel isn't just used by us. It is not uncommon for STB
> > bootloaders to get information from the frontend as part of the boot process.
>
> Okay, this is the clincher. Since we need to support non-standard
> bootloaders, it's difficult to guarantee that the clock will be
> disabled at boot. For this reason, I believe that we can call this a
> critical clock.
>
That's good news as the STi maintainer already acked and applied the patch.

Peter.