On Wed, 13 Mar 2019 at 20:35, Alexandre Bailon <[email protected]> wrote: > > This series implements busfreq, a framework used in MXP's > tree to scale the interconnect and dram frequencies. > In the vendor tree, device's driver request for a > performance level, which is used to scale the frequencies. > This series implements it using the interconnect framework. > Devices' driver request for bandwidth which is use by busfreq > to determine a performance level, and then scale the frequency. > > Busfreq is quite generic. It could be used for any i.MX SoC. > A busfreq platform driver just have to define a list of > interconnect nodes, and some OPPs. > > This series is sent as RFC mostly because the current support > of i.MX SoC won't benefit of busfreq framework, because the > clocks' driver don't support interconnect / dram frequency > scaling. > As exemple, this series implements busfreq for i.MX8MM whose > upstreaming is in progress. Because this relies on ATF to > do the frequency scaling, it won't be hard make it work. > > As exemple, this series implements busfreq for > Alexandre Bailon (3): > drivers: interconnect: Add a driver for i.MX SoC > drivers: interconnect: imx: Add support of i.MX8MM > dt-bindings: interconnect: Document fsl,busfreq-imx8mm bindings
Hi Alexandre, I am quite late but I just found your email. This looks very similar to existing framework - devfreq, which purpose is to scale the system busses based on performance counters/events. It would be nice if we could avoid duplication of existing subsystems. Best regards, Krzysztof
