rtc on PowerMac7,3

rtc on PowerMac7,3

[kevin diggs]

Hi,

Sorry for the noise.

How do I access the rtc on a PowerMac7,3 (dual 2.5 GHz 970FX) using
2.6.36? rtc-generic does not seem to work. It will work on my 8600. I
do see this:

[   15.014542] rtc-generic rtc-generic: rtc core: registered rtc-generic as rtc0

Is it the hwclock binary:

hwclock from util-linux-2.13-pre7

I think I could get this to work in 2.6.28 using rtc-ppc.

Thanks!

kevin

Re: rtc on PowerMac7,3

[Benjamin Herrenschmidt]

On Wed, 2011-02-23 at 13:39 -0600, kevin diggs wrote:
> Hi,
> 
> Sorry for the noise.
> 
> How do I access the rtc on a PowerMac7,3 (dual 2.5 GHz 970FX) using
> 2.6.36? rtc-generic does not seem to work. It will work on my 8600. I
> do see this:
> 
> [   15.014542] rtc-generic rtc-generic: rtc core: registered rtc-generic as rtc0

rtc-generic should work... 

Cheers,
Ben.

> Is it the hwclock binary:
> 
> hwclock from util-linux-2.13-pre7
> 
> I think I could get this to work in 2.6.28 using rtc-ppc.
> 
> Thanks!
> 
> kevin
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev

Re: rtc on PowerMac7,3

[kevin diggs]

On Wed, Feb 23, 2011 at 1:42 PM, Benjamin Herrenschmidt
<benh@kernel.crashing.org> wrote:
>> [ =A0 15.014542] rtc-generic rtc-generic: rtc core: registered rtc-gener=
ic as rtc0
>
> rtc-generic should work...
>
> Cheers,
> Ben.
>
It probably does on everyone else's 7,3. The 8600 probably infected
it. ... I hear the two of them out there late at night. Mumbling to
each other ... plotting ...

kevin

Re: rtc on PowerMac7,3

[Benjamin Herrenschmidt]

On Wed, 2011-02-23 at 17:24 -0600, kevin diggs wrote:
> It probably does on everyone else's 7,3. The 8600 probably infected
> it. ... I hear the two of them out there late at night. Mumbling to
> each other ... plotting ...

Not sure, I haven't looked at that RTC stuff for ages. Basically the
platform code provides generic RTC hooks (in that G5 it's going to be
via the via-pmu) and it should "just work". That code hasn't been
touched for eons.

Cheers,
Ben.

Re: rtc on PowerMac7,3

[kevin diggs]

Hi,

Thanks for taking some of your valuable time to reply.

Now I can't get it to fail. I don't know what I did wrong??? These
things are tryin' to push me over the edge!

Part of the problem may be the /dev/rtc (10:135 or whatever the PC
numbers are) PC device that gets put into /dev/ (udev) on YDL 6.0.
Should probably figure out who is adding it and nuke it.

Sorry for the noise!?!

kevin

On Wed, Feb 23, 2011 at 6:09 PM, Benjamin Herrenschmidt
<benh@kernel.crashing.org> wrote:
>
> Not sure, I haven't looked at that RTC stuff for ages. Basically the
> platform code provides generic RTC hooks (in that G5 it's going to be
> via the via-pmu) and it should "just work". That code hasn't been
> touched for eons.
>
> Cheers,
> Ben.
>