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. -- 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
