Re: powermac clock on 7200

[Martin Costabel <costabel@wanadoo.fr>]

Ethan Benson wrote:
> 
> On Thu, Aug 10, 2000 at 04:20:49PM -0400, James Waterhouse wrote:
> > Hello all,
> >     can anyone tell me... are we supposed to be able to set the hardware
> > clock from within linux? I'm running kernel 2.2.14 on a powermac 7200
> > and when I try to set the clock using I get the following...
> >
> > root@node7:~# hwclock --debug
> > hwclock 2.4c/util-linux-2.10f
> > hwclock: Open of /dev/rtc failed, errno=19: No such device.
> > No usable clock interface found.
> > Cannot access the Hardware Clock via any known method.  Use --debug
> > option to see the details of our search for an access method.
> 
> use `clock' instead of hwclock, ppc needs a different userland
> utility.  (why not add ppc rtc support to hwclock?)

No longer necessary: The newer kernels [1] have a driver for /dev/rtc
that lets you use the standard hwclock utility from util-linux. Just
choose CONFIG_PPC_RTC=y when compiling your kernel (or choose
CONFIG_PPC_RTC=m and patch a small bug in arch/ppc/kernel/ppc_ksyms.c)

[1] 2.2.17preX since X=5; recent 2.4.0-test from bitkeeper and Paul's
trees.

--
Martin