Rob, On 15-09-15, 08:17, Viresh Kumar wrote: > On 14-09-15, 15:22, Rob Herring wrote: > > What if we have a 2nd device and supply rail? For example, what if the > > L2$ has a separate rail from the cores but is linked to the OPPs. > > Right, so that is the case with the Mediatek SoC as well, AFAIR. How > do we plan to treat L2 devices? For example, in the mediatek cpufreq > driver, they change L2's supplies together with CPUs. > > One way to get that done, with such very closely bound devices is to > add two regulators: > > cpu-supply = ...; > l2-supply = ...; > > And then a property in OPP table: > > supply-name = "cpu", "l2"; > > And maybe fix the order in which the supplies which be updated, based > on the order in which entries are present in the above property. > > Any other way you suggest for doing that ? > > > Remind me of when do we have multiple regulators for a cpu? > > I haven't seen that yet, but its more like what I explained above. > i.e. one for the CPU and other one for the L2 cache. > > But, these bindings do apply for other devices as well, where it > should be very much possible. Not sure if you still have any objections to this patch? -- viresh -- 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
