On Fri, Aug 05, 2022 at 03:49:31PM +0800, Jun Nie wrote: > Support dynamic voltage frequency scaling inside clock controller with > changes in clock framework. And added msm8916 as the first SoC to > support this feature. > As far as I understand it was decided to handle this on the consumer driver side in mainline, together with OPP tables and "required-opps" in the device tree. If you look at e.g. sc7180.dtsi you can see that this is heavily used there. Also see e.g. [1] for some links to related discussions. For MSM8916 at least the SDHCI and DSI driver should support this already. Some other older drivers (e.g. QUP, USB) would need some change similar to [2] (just like they still need changes for interconnects). I'm not entirely sure why it was decided to not do this as part of the clock core (maybe someone can explain or link a relevant mailing list post?), but we should try to keep it consistent in any case. :) Thanks, Stephan [1]: https://lore.kernel.org/linux-arm-msm/20200910162610.GA7008@xxxxxxxxxxx/ [2]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0472f8d3c054a0ff58122fc9d2dbf84f197a284f
