On 06-03-18, 08:37, Jordan Crouse wrote: > I'll try to explain but I might need Stephen or some of the other folks to jump > in and save me. Maybe you should start using his kernel.org address then ? :) > On sdm845 there are shared power resources controlled by the RPMh which is > programed by a series of commands from the regulator driver; but in the case > of the GPU the votes are passed to the GMU (graphics management unit) which > communicates with the RPMh on behalf of the GPU. > > In order to construct the RPMh vote we need first need a voltage level that we > can look up in a database. qcom,arc-level is the voltage level associated with > a specific OPP. > > I had previously been abusing this with opp-microvolt but that was wrong for > obvious reasons and then Stephen pointed out that this would be a better way. Glad that you shared that :) A solution is already in progress for that and is partially merged as well. Look for "performance_state" in genpd and OPP cores (already merged), followed by this series here: https://lkml.kernel.org/r/cover.1513926033.git.viresh.kumar@xxxxxxxxxx -- 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
