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Groups > linux.kernel > #1598077
| From | Kevin Hilman <khilman@baylibre.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH V3 0/7] PM / Domains: Implement domain performance states |
| Date | 2017-03-10 21:40 +0100 |
| Message-ID | <tjzup-FR-11@gated-at.bofh.it> (permalink) |
| References | <tekcF-6wz-3@gated-at.bofh.it> |
| Organization | BayLibre |
Viresh Kumar <viresh.kumar@linaro.org> writes: > This series contain V3 of both the bindings and the code that implement > them. They were sent separately earlier. > > Some platforms have the capability to configure the performance state of > their power domains. The process of configuring the performance state is > pretty much platform dependent and we may need to work with a wide range > of configurables. For some platforms, like Qcom, it can be a positive > integer value alone, while in other cases it can be voltage levels, etc. Why limit it to just voltage levels. As I suggested earlier, I think this should use OPPs. Remember that a PM domain is not limited to a hardware power domain, but is just a grouping mechanism for devices that share some PM properties. As mentioned by Geert, this can also be a clock domain, where frequencies would make sense as well. One can imagine using this type of PM domain to manage an interconnect/bus which has scalable voltage/frequencies as well. Kevin
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Re: [PATCH V3 0/7] PM / Domains: Implement domain performance states Kevin Hilman <khilman@baylibre.com> - 2017-03-10 21:40 +0100 Re: [PATCH V3 0/7] PM / Domains: Implement domain performance states Viresh Kumar <viresh.kumar@linaro.org> - 2017-03-13 11:50 +0100
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