On Wed, October 31, 2007 11:55 am, zheng_zhou_mail wrote:
> Hi,
> I just bought TS-7800 with the Debian release 3.1 on a 512MB SD
> card. After booting up, the RTC always gives a wrong time:"Sun Oct 25
> 15:12:14 1925". I tried to reset the system time and HW clock as
> typical procedure through a 'CuteCom' terminal:
> -Setting the system time with 'date 103110302007'. It Works!
> -Setting the HW clock with 'hwclock --systohc',
> then using 'hwclock --show' to check its status. However, the
> system response a message:
> "The Hardware Clock registers contain values that are either invalid
> (e.g. 50th day of month) or beyond the range we can handle (e.g. Year
> 2095)."
> I have tried several times with different hwclock's options
> already, but got the same result. I dumped the /driver/rtc below,
> which looks missing a lot info, such as periodic-IRQ, -freq, etc. Is
> there any clue here to fix the hwclock problem on TS-7800? Please let
> me if you have any suggestion. Thanks.
>
> Zheng
The RTC on the 7800 cannot be accessed through the normal /dev/rtc
mechanism, as there are problems with the new RTC abstraction in 2.6 on
the ARM architecture. A special utility "rtc7800" was written to transfer
time between the RTC and system time. The "-s" option saves system time
to the RTC, and no option transfers RTC time to system time.
Regards,
Michael
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