Hi --
--- In "Michael" <> wrote:
>
> From the work that I did trying to get the RTC driver working on
the
> TS-7800, I recall that the RTC subsystem was changed around .19
or .20. One
> of the features of the new abstraction apparently was the ability
to have
> multiple RTC. Anyway, it appeared that there was something
missing in 2.6
> to deal with RTC on the ARM platform, so we eventually gave up and
just
> wrote a user-mode utility so we could go ahead and ship the 7800.
Any idea
> if ARM RTCs are supported better in later kernel versions?
>
> --Michael
>
Both the ep93xx and the DS12887 have worked OK for me (TS-7250),
from about 2.6.19. You're right, now multiple RTCs can be used, but
most userspace code seemed to look for /dev/rtc and crap out if it
was missing. Try symlinking /dev/rtc0 (or rtc1) to /dev/rtc in a
startup script.
I don't have a TS7800 to play with yet. AFAIK there are no general
problems with RTCs on ARM as long as you have a chipset driver and
do the platform device registration for the RTC. There's a lot of
Orion code waiting for 2.6.25 to open up ... but no TS-7800 platform
code (hint hint :)
Regards, ...... Charlie
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