Hi Maciej,
On Wed, 23 Apr 2008 01:46:16 +0100 (BST)
"Maciej W. Rozycki" <macro@xxxxxxxxxxxxxx> wrote:
> On Wed, 23 Apr 2008, Yoichi Yuasa wrote:
>
> > add DECstation I/O ASIC clocksource
>
> Thanks, I will have a look into it; reasonably soon I hope -- I'm
> updating my tree right now. I am quite surprised you care about this
> platform too.
I'm interested in the little endian systems ;)
> > +void __init dec_ioasic_clocksource_init(void)
> > +{
> > + clocksource_dec.rating = 200;
> > + clocksource_set_clock(&clocksource_dec, 25000000);
> > +
> > + clocksource_register(&clocksource_dec);
> > +}
>
> This is not true for all systems -- the clock rate is based on the
> TURBOchannel clock and it varies across systems. And some have no counter
> in the I/O ASIC at all (it has been added in a later revision of the
> chip), which the old code handled albeit not in the prettiest way (by
> chance actually, as originally I did know of the older revision).
Hmm, we should measure the clock rate.
OK, I'll update dec-ioasic clocksource.
Yoichi
