From: Viresh Kumar <viresh.kumar@linaro.org> To: dawei chien <dawei.chien@mediatek.com>, Javi Merino <javi.merino@arm.com> Cc: Eduardo Valentin <edubezval@gmail.com>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Kumar Gala <galak@codeaurora.org>, Matthias Brugger <matthias.bgg@gmail.com>, Daniel Kurtz <djkurtz@chromium.org>, Sascha Hauer <s.hauer@pengutronix.de>, Daniel Lezcano <daniel.lezcano@linaro.org>, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-mediatek@lists.infradead.org, srv_heupstream@mediatek.com, Sascha Hauer <kernel@pengutronix.de> Subject: Re: [PATCH v3 1/2] thermal: mediatek: Add cpu power cooling model. Date: Fri, 6 Nov 2015 08:54:33 +0530 [thread overview] Message-ID: <20151106032433.GL3773@ubuntu> (raw) In-Reply-To: <1446721837.4016.57.camel@mtksdaap41> Cc'ing Javi (which you should have as he wrote the power-thing for cpu-cooling). On 05-11-15, 19:10, dawei chien wrote: > This is because our platform currently only support mt8173_cpufreq.c, so > that I only add static power model for our owner IC. Bindings are (normally) supposed to be general than a platform specific. > Please understanding that I wouldn't give a DT binding document since I > will remove static power table on next version, but I can try to explain > it. Then just don't add things in the first place. > As far as I know, static power is somewhat leakage of CPU clusters, so > that we hardly to find a formula, which can suitable all kinds of CPUs > since leakage is different. In ARM IPA framework, static power only need > to be defined by who register cpufreq_power_cooling_register. The > voltage/power table is just one way to present leakage power of CPUs. The bindings don't fix the values for static power, but just provides a field for platforms to use. Everyone can then send its own power figures. Why do you thing it can't be generalized? > Actually, static power is optional since dynamic power is much more than > static power. Maybe, we should still capture it. @Javi ? -- viresh
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From: viresh.kumar@linaro.org (Viresh Kumar) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 1/2] thermal: mediatek: Add cpu power cooling model. Date: Fri, 6 Nov 2015 08:54:33 +0530 [thread overview] Message-ID: <20151106032433.GL3773@ubuntu> (raw) In-Reply-To: <1446721837.4016.57.camel@mtksdaap41> Cc'ing Javi (which you should have as he wrote the power-thing for cpu-cooling). On 05-11-15, 19:10, dawei chien wrote: > This is because our platform currently only support mt8173_cpufreq.c, so > that I only add static power model for our owner IC. Bindings are (normally) supposed to be general than a platform specific. > Please understanding that I wouldn't give a DT binding document since I > will remove static power table on next version, but I can try to explain > it. Then just don't add things in the first place. > As far as I know, static power is somewhat leakage of CPU clusters, so > that we hardly to find a formula, which can suitable all kinds of CPUs > since leakage is different. In ARM IPA framework, static power only need > to be defined by who register cpufreq_power_cooling_register. The > voltage/power table is just one way to present leakage power of CPUs. The bindings don't fix the values for static power, but just provides a field for platforms to use. Everyone can then send its own power figures. Why do you thing it can't be generalized? > Actually, static power is optional since dynamic power is much more than > static power. Maybe, we should still capture it. @Javi ? -- viresh
next prev parent reply other threads:[~2015-11-06 3:24 UTC|newest] Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-10-22 12:02 [PATCH v3 0/2] thermal: mediatek: Add cpu power cooling model Dawei Chien 2015-10-22 12:02 ` Dawei Chien 2015-10-22 12:02 ` Dawei Chien 2015-10-22 12:02 ` [PATCH v3 1/2] " Dawei Chien 2015-10-22 12:02 ` Dawei Chien 2015-10-22 12:02 ` Dawei Chien 2015-11-04 19:40 ` Eduardo Valentin 2015-11-04 19:40 ` Eduardo Valentin 2015-11-04 19:40 ` Eduardo Valentin 2015-11-05 11:10 ` dawei chien 2015-11-05 11:10 ` dawei chien 2015-11-05 11:10 ` dawei chien 2015-11-06 3:24 ` Viresh Kumar [this message] 2015-11-06 3:24 ` Viresh Kumar 2015-11-10 11:20 ` Javi Merino 2015-11-10 11:20 ` Javi Merino 2015-11-10 18:41 ` Eduardo Valentin 2015-11-10 18:41 ` Eduardo Valentin 2015-11-11 9:36 ` Javi Merino 2015-11-11 9:36 ` Javi Merino 2015-11-11 9:36 ` Javi Merino 2015-11-13 5:02 ` Viresh Kumar 2015-11-13 5:02 ` Viresh Kumar 2015-10-22 12:02 ` [PATCH v3 2/2] arm64: dts: mt8173: Add thermal zone node for mt8173 Dawei Chien 2015-10-22 12:02 ` Dawei Chien 2015-10-22 12:02 ` Dawei Chien 2015-10-28 15:39 ` Viresh Kumar 2015-10-28 15:39 ` Viresh Kumar 2015-11-02 10:51 ` dawei chien 2015-11-02 10:51 ` dawei chien 2015-11-02 10:51 ` dawei chien 2015-11-04 19:41 ` Eduardo Valentin 2015-11-04 19:41 ` Eduardo Valentin 2015-11-05 11:10 ` dawei chien 2015-11-05 11:10 ` dawei chien 2015-11-05 11:10 ` dawei chien 2015-10-28 15:44 ` [PATCH v3 0/2] thermal: mediatek: Add cpu power cooling model Viresh Kumar 2015-10-28 15:44 ` Viresh Kumar 2015-11-02 10:46 ` dawei chien 2015-11-02 10:46 ` dawei chien 2015-11-02 10:46 ` dawei chien 2015-11-02 12:10 ` Viresh Kumar 2015-11-02 12:10 ` Viresh Kumar 2015-11-02 12:10 ` Viresh Kumar 2015-11-05 11:09 ` dawei chien 2015-11-05 11:09 ` dawei chien 2015-11-05 11:09 ` dawei chien 2015-11-06 3:20 ` Viresh Kumar 2015-11-06 3:20 ` Viresh Kumar 2015-11-06 3:20 ` Viresh Kumar 2015-11-11 12:00 ` dawei chien 2015-11-11 12:00 ` dawei chien 2015-11-11 12:00 ` dawei chien 2015-11-02 15:53 ` Punit Agrawal 2015-11-02 15:53 ` Punit Agrawal 2015-11-02 15:53 ` Punit Agrawal 2015-11-02 16:10 ` Viresh Kumar 2015-11-02 16:10 ` Viresh Kumar 2015-11-04 19:36 ` Eduardo Valentin 2015-11-04 19:36 ` Eduardo Valentin
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