On 16-10-19, 16:57, Sylwester Nawrocki wrote: > From: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> > > On some SoCs the Adaptive Voltage Scaling (AVS) technique is > employed to optimize the operating voltage of a device. At a > given frequency, the hardware monitors dynamic factors and either > makes a suggestion for how much to adjust a voltage for the > current frequency, or it automatically adjusts the voltage > without software intervention. Add an API to the OPP library for > the former case, so that AVS type devices can update the voltages > for an OPP when the hardware determines the voltage should > change. The assumption is that drivers like CPUfreq or devfreq > will register for the OPP notifiers and adjust the voltage > according to suggestions that AVS makes. > > This patch is derived from [1] submitted by Stephen. > [1] https://lore.kernel.org/patchwork/patch/599279/ > > Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> > Signed-off-by: Roger Lu <roger.lu@xxxxxxxxxxxx> > [s.nawrocki@xxxxxxxxxxx: added handling of OPP min/max voltage] > Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx> > --- > drivers/opp/core.c | 69 ++++++++++++++++++++++++++++++++++++++++++ > include/linux/pm_opp.h | 13 ++++++++ > 2 files changed, 82 insertions(+) Applied. Thanks. -- viresh
