[Openipmi-developer] [patch 1/1] ipmi: add autosensing of ipmi device on powerpc using device-tree

[Christian Krafft]

Good then, it make things easier for me ;-)
Will send an updated version soon...

Cheers, ck

On Mon, 11 Dec 2006 17:58:36 +0100
Segher Boessenkool <segher at kernel.crashing.org> wrote:

> > If I understood you comments an example OFDT node for IPMI could
> > look like the following:
> >
> > name = "ipmi"
> > device_type = "ipmi"
> > compatible = "ipmi-kcs"
> >
> > reg = XXXXXXX8 00000008
> > reg-spacing = 4
> 
> Yeah.
> 
> > reg-size    = 1
> > reg-shift   = 0
> 
> But without these two, they are the default.
> 
> > Is the "8" of the reg property correct?
> 
> Sure.  Alternatively, if your device really only claims
> bus cycles targeting the 8-bit regs at xxx8 and xxxC, you
> can say that in the "reg" property.  This doesn't change
> the programming model in the least though.
> 
> > I'm still worried what happens when we have a BT or SMIC interface
> > an the registers sitting at XXXXXXX4, XXXXXXX6, XXXXXXXA. In this
> > case the reg-spacing property can't be used anymore. Can this
> > happen in reality?
> 
> I don't think it is allowed.  Either way, the generic Linux IPMI
> code would need changing for this -- let's worry about it later
> (if ever!)
> 
> 
> Segher
> 


-- 
Mit freundlichen Grüssen,
kind regards,

Christian Krafft
IBM Systems & Technology Group, 
Linux Kernel Development
IT Specialist