[PATCH 2/9] ARC: [dts] Introduce Timer bindings
Alexey Brodkin
Alexey.Brodkin at synopsys.com
Tue Feb 2 07:36:14 PST 2016
Hi Vineet,
On Tue, 2016-02-02 at 19:59 +0530, Vineet Gupta wrote:
> Hi Alexey,
>
> On Tuesday 02 February 2016 06:45 PM, Alexey Brodkin wrote:
> > Hi Vineet,
> >
> > On Tue, 2016-02-02 at 16:28 +0530, Vineet Gupta wrote:
> > > +
> > > +Required properties:
> > > +
> > > +- compatible : should be "snps,arc-timer0"
> > > +- interrupts : single Interrupt going into parent intc
> > > + (16 for ARCHS cores, 3 for ARC700 cores)
> > > +- clocks : phandle to the source clock
> >
> > Actually we're not flexible here.
> > See we have hard-coded "core_clk" in [PATCH 8/9].
> > We use it directly in show_cpuinfo() for reading clock speed
> > as well as in axs103_early_init().
> >
> > So "source clock" here MUST be "core_clk", otherwise
> > /proc/cpuinfo will report junk instead of meaningful data at least.
>
> Using hardcoded DT names in generic code is total BS and I slap myself for missing
> that in reviewing 8/9. Please fix it !
But the only other alternative to hard-coded name is use of some internal variable
like "arc_timer_freq".
I.e. we make "arc_timer_freq" global and use it for displaying core frequency.
Are you OK with that?
-Alexey
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