On Thu, Oct 20, 2016 at 10:44 AM, Viresh Kumar <[email protected]> wrote: > Hi, > > Some platforms (like TI) have complex DVFS configuration for CPU > devices, where multiple regulators are required to be configured to > change DVFS state of the device. This was explained well by Nishanth > earlier [1]. > > Some thoughts went into it few months back but then it all got lost. I > am trying to get that back on track with this thread. > > One of the major complaints around multiple regulators case was that the > DT isn't responsible in any way to represent the ordering in which > multiple supplies need to be programmed, before or after frequency > change. It was considered in this patch and such information is left to > the platform specific OPP driver now, which can register its own > opp_set_rate() callback with the OPP core and the OPP core will then > call it during DVFS. > > The patches are tested on Exynos5250 (Dual A15). I have hacked around DT > and code to pass values for multiple regulators and verified that they > are all properly read by the kernel (using debugfs interface). > > Though more testing on real (TI) platforms would be useful. > > This is rebased over: linux-next branch in the PM tree. > > V1->V2: > - Ack from Rob for 1st patch > - Moved the supplies structure to pm_opp.h (Dave) > - Fixed an compilation warning.
I need somebody from the OPP camp to review patches [2-8/8] for me. Thanks, Rafael
