On 03/04/2024 18:23, Lukasz Luba wrote: > The Energy Model (EM) supports performance limits updates. Use the SCMI > notifications to get information from FW about allowed frequency scope for > the CPUs. I'm slightly confused here. IMHO this doesn't seem to be related to the "HW dependency between 'little CPUs & L3 $ in DSU' or similar" usecase. I assumed that this usecase is rather handled via an additional out-of-tree driver, potentially the same which updates the EM because of temperature change (em_dev_compute_costs(), em_dev_update_perf_domain()) or chip binning (em_dev_update_chip_binning()). What about other CPUFreq drivers registering an EM via em_dev_register_perf_domain() or 'cpufreq_register_em_with_opp() -> dev_pm_opp_of_register_em()'? Or is this 'limit notification' an SCMI FW only thing? [...]
