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

From: Krzysztof Kozlowski <[email-masked]>
Date: Mon, 21 Oct 2019 13:23:54 +0200

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 <[email-masked]>
> > 
> > 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 <[email-masked]>
> > Signed-off-by: Roger Lu <[email-masked]>
> > [[email-masked]: added handling of OPP min/max voltage]
> > Signed-off-by: Sylwester Nawrocki <[email-masked]>
> > ---
> >  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?

Best regards,
Krzysztof

_______________________________________________
linux-arm-kernel mailing list
[email-masked]
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel