Re: [PATCH v5 1/4] PM / OPP: Support adjusting OPP voltages at runtime

[Krzysztof Kozlowski <krzk@kernel.org>]

On Tue, Oct 22, 2019 at 07:53:41AM +0530, Viresh Kumar wrote:
> On 21-10-19, 13:23, Krzysztof Kozlowski wrote:
> > On Thu, Oct 17, 2019 at 12:12:58PM +0530, Viresh Kumar wrote:
> > > On 16-10-19, 16:57, Sylwester Nawrocki wrote:
> > > > From: Stephen Boyd <sboyd@codeaurora.org>
> > > > 
> > > > 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@codeaurora.org>
> > > > Signed-off-by: Roger Lu <roger.lu@mediatek.com>
> > > > [s.nawrocki@samsung.com: added handling of OPP min/max voltage]
> > > > Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
> > > > ---
> > > >  drivers/opp/core.c     | 69 ++++++++++++++++++++++++++++++++++++++++++
> > > >  include/linux/pm_opp.h | 13 ++++++++
> > > >  2 files changed, 82 insertions(+)
> > > 
> > > Applied. Thanks.
> > 
> > Hi Viresh,
> > 
> > Can you provide a stable tag with this patch so I can take soc/samsung
> > driver?
> 
> opp-5.4-support-adjust-voltages

Thanks, merged.

Best regards,
Krzysztof