From: Krzysztof Kozlowski <krzk@kernel.org>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>,
vireshk@kernel.org, robh+dt@kernel.org, sboyd@kernel.org,
roger.lu@mediatek.com, linux-pm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org,
b.zolnierkie@samsung.com, m.szyprowski@samsung.com,
Stephen Boyd <sboyd@codeaurora.org>
Subject: Re: [PATCH v5 1/4] PM / OPP: Support adjusting OPP voltages at runtime
Date: Mon, 21 Oct 2019 13:23:54 +0200 [thread overview]
Message-ID: <20191021112354.GA2262@pi3> (raw)
In-Reply-To: <20191017064258.yfbh7iz3pbzfhdvr@vireshk-i7>
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?
Best regards,
Krzysztof
WARNING: multiple messages have this Message-ID (diff)
From: Krzysztof Kozlowski <krzk@kernel.org>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-pm@vger.kernel.org, sboyd@kernel.org, vireshk@kernel.org,
b.zolnierkie@samsung.com, roger.lu@mediatek.com,
robh+dt@kernel.org, Sylwester Nawrocki <s.nawrocki@samsung.com>,
Stephen Boyd <sboyd@codeaurora.org>,
linux-arm-kernel@lists.infradead.org, m.szyprowski@samsung.com
Subject: Re: [PATCH v5 1/4] PM / OPP: Support adjusting OPP voltages at runtime
Date: Mon, 21 Oct 2019 13:23:54 +0200 [thread overview]
Message-ID: <20191021112354.GA2262@pi3> (raw)
In-Reply-To: <20191017064258.yfbh7iz3pbzfhdvr@vireshk-i7>
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?
Best regards,
Krzysztof
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next prev parent reply other threads:[~2019-10-21 11:24 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20191016145806eucas1p2d522901fc79e1ca6e03f1bb516a81370@eucas1p2.samsung.com>
2019-10-16 14:57 ` [PATCH v5 0/4] Exynos Adaptive Supply Voltage support Sylwester Nawrocki
2019-10-16 14:57 ` Sylwester Nawrocki
[not found] ` <CGME20191016145810eucas1p1b31400c9b2e7f30cdf6deeb4ccee2788@eucas1p1.samsung.com>
2019-10-16 14:57 ` [PATCH v5 1/4] PM / OPP: Support adjusting OPP voltages at runtime Sylwester Nawrocki
2019-10-16 14:57 ` Sylwester Nawrocki
2019-10-17 6:42 ` Viresh Kumar
2019-10-17 6:42 ` Viresh Kumar
2019-10-21 11:23 ` Krzysztof Kozlowski [this message]
2019-10-21 11:23 ` Krzysztof Kozlowski
2019-10-22 2:23 ` Viresh Kumar
2019-10-22 2:23 ` Viresh Kumar
2019-10-22 18:43 ` Krzysztof Kozlowski
2019-10-22 18:43 ` Krzysztof Kozlowski
[not found] ` <CGME20191016145812eucas1p1a3cf3f44a2cff4c32a2270334630c4a2@eucas1p1.samsung.com>
2019-10-16 14:57 ` [PATCH v5 2/4] dt-bindings: arm: samsung: Update the CHIPID binding for ASV Sylwester Nawrocki
2019-10-16 14:57 ` Sylwester Nawrocki
2019-10-16 16:16 ` Krzysztof Kozlowski
2019-10-16 16:16 ` Krzysztof Kozlowski
2019-10-17 9:03 ` Sylwester Nawrocki
2019-10-17 9:03 ` Sylwester Nawrocki
[not found] ` <CGME20191016145813eucas1p1623db169f1ee93f88cb2c75090804747@eucas1p1.samsung.com>
2019-10-16 14:57 ` [PATCH v5 3/4] soc: samsung: Add Exynos Adaptive Supply Voltage driver Sylwester Nawrocki
2019-10-16 14:57 ` Sylwester Nawrocki
2019-10-22 19:04 ` Krzysztof Kozlowski
2019-10-22 19:04 ` Krzysztof Kozlowski
2019-10-23 10:48 ` Sylwester Nawrocki
2019-10-23 10:48 ` Sylwester Nawrocki
2019-10-23 11:20 ` Krzysztof Kozlowski
2019-10-23 11:20 ` Krzysztof Kozlowski
[not found] ` <CGME20191016145814eucas1p10d50d438abb850fd82f622122b223196@eucas1p1.samsung.com>
2019-10-16 14:57 ` [PATCH v5 4/4] ARM: EXYNOS: Enable exynos-asv driver for ARCH_EXYNOS Sylwester Nawrocki
2019-10-16 14:57 ` Sylwester Nawrocki
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