On Sat, 24 Nov 2018, Michael Schmitz wrote:
>
> Am 20.11.2018 um 23:02 schrieb Andreas Schwab:
> > On Nov 20 2018, Linus Walleij wrote:
> >
> > > Yes you already see the same as I see: this chip MK68901 has no less
> > > than four timers. I bet the kernel is just using one of them, out of
>
Am 20.11.2018 um 23:02 schrieb Andreas Schwab:
On Nov 20 2018, Linus Walleij wrote:
Yes you already see the same as I see: this chip MK68901 has
no less than four timers. I bet the kernel is just using one of them,
out of habit.
Note that not all timers can be used freely. Some of them
On Nov 20 2018, Linus Walleij wrote:
> Yes you already see the same as I see: this chip MK68901 has
> no less than four timers. I bet the kernel is just using one of them,
> out of habit.
Note that not all timers can be used freely. Some of them are hardwired
to generate the clock for the
On Tue, Nov 20, 2018 at 10:30 AM Finn Thain wrote:
> On Tue, 20 Nov 2018, Linus Walleij wrote:
> > As with the Amiga, this chip also has an RTC clock that should go to the
> > RTC subsystem, naturally.
>
> I think some Atari's have an MC146818, which is drivers/rtc/rtc-cmos.c,
>
On Tue, 20 Nov 2018, Linus Walleij wrote:
>
> Yes you already see the same as I see: this chip MK68901 has no less
> than four timers. I bet the kernel is just using one of them, out of
> habit.
>
> By just setting another timer as free-running we get a classic and clean
> Linux clocksource
Hi Linus,
On Tue, Nov 20, 2018 at 9:10 AM Linus Walleij wrote:
> As with the Amiga, this chip also has an RTC clock that should
> go to the RTC subsystem, naturally.
Please note the Amiga CIA is an 8520, not 6526, hence it has a 24-bit TOD
instead of a BCD TOD, so it's not suitable for use as
On Mon, Nov 19, 2018 at 2:22 AM Finn Thain wrote:
> Add a platform clocksource by adapting the existing arch_gettimeoffset
> implementation.
>
> Normally the MFP timer C interrupt flag would be used to check for
> timer counter wrap-around. Unfortunately, that flag gets cleared by the
> MFP
Hi Finn,
this fixes the ssh timeout issues I reported for the earlier versions.
Can't see a large degradation of resolution either.
The race in the previous versions may have been exacerbated in part by
an incorrect assumption about the likelihood of counter wrap-around in
the old
Add a platform clocksource by adapting the existing arch_gettimeoffset
implementation.
Normally the MFP timer C interrupt flag would be used to check for
timer counter wrap-around. Unfortunately, that flag gets cleared by the
MFP itself (due to automatic EOI mode). This means that
