Hi, On 25/05/2018 23:10, Olof Johansson wrote: > On Fri, May 25, 2018 at 11:10:01AM +0530, Viresh Kumar wrote: >> The cooling device properties, like "#cooling-cells" and >> "dynamic-power-coefficient", should either be present for all the CPUs >> of a cluster or none. If these are present only for a subset of CPUs of >> a cluster then things will start falling apart as soon as the CPUs are >> brought online in a different order. For example, this will happen >> because the operating system looks for such properties in the CPU node >> it is trying to bring up, so that it can register a cooling device. >> >> Add such missing properties. > > This seems awkward compared to just having one cooling-cells in the /cpus node > instead. > > What's it used for? I don't see any properties in the device nodes on meson-gxm > that have any cooling-foo cells in them? So why should #cooling-cells be > needed? There is no reason to have the cooling-cells on these other CPUs, the DVFS is controlled on the first CPU of each cluster, here cpu0 and cpu4 and only cpu0 and cpu4 are used as cooling-cells. Neil > > > -Olof > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
