On 01/10/2013 07:47 AM, Michal Simek wrote: > Hi Rob, Mark, Grant and others, > > I want to check with you the location of ARM pmu node > I see that > 1) highbank and dbx5x0 have it in soc node > > 2) vexpress and tegra have no main bus and pmu is in root like all > others devices. > (Any reason no to have main bus? Does it mean that there is no bus or > that all > devices are accessible?)
That seems really wrong in general. Any memory mapped device is on a bus of some kind. I'm not sure the reasoning. Perhaps Stephen can explain. > 3) omap2/omap3 have added pmu node to root node(mailing list) > > 4) Just for completeness no platform has it in the bus. > > > That's why I have obvious question what it is proper location for pmu node? Obviously, highbank is the true and correct way. ;) The pmu is part of the cpu, so it could be part of /cpus. That may cause problems having non-cpu nodes and it would not get probed (although technically that is a Linux problem and should not influence the DT). Since it is not on a bus, then putting it at the top level probably makes more sense than on a bus. Rob > > Thanks, > Michal > _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
