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Date:   Wed, 2 Mar 2022 10:23:01 +0530
From:   Viresh Kumar <viresh.kumar@linaro.org>
To:     Lukasz Luba <lukasz.luba@arm.com>
Cc:     linux-kernel@vger.kernel.org, dietmar.eggemann@arm.com,
        rafael@kernel.org, daniel.lezcano@linaro.org, nm@ti.com,
        sboyd@kernel.org, mka@chromium.org, dianders@chromium.org,
        robh+dt@kernel.org, devicetree@vger.kernel.org,
        linux-pm@vger.kernel.org
Subject: Re: [PATCH v4 3/4] OPP: Add support of "opp-microwatt" for advanced
 EM registration
Message-ID: <20220302045301.fq6nolscdfd5wvyo@vireshk-i7>
References: <20220301093524.8870-1-lukasz.luba@arm.com>
 <20220301093524.8870-4-lukasz.luba@arm.com>
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On 01-03-22, 09:35, Lukasz Luba wrote:
> The Energy Model (EM) can be created based on DT entry:
> 'dynamic-power-coefficient'. It's a 'simple' EM which is limited to the
> dynamic power. It has to fit into the math formula which requires also
> information about voltage. Some of the platforms don't expose voltage
> information, thus it's not possible to use EM registration using DT.
> 
> This patch aims to fix it. It introduces new implementation of the EM
> registration callback. The new mechanism relies on the new OPP feature
> allowing to get power (which is coming from "opp-microwatt" DT property)
> expressed in micro-Watts.
> 
> The patch also opens new opportunity to better support platforms, which
> have a decent static power. It allows to register 'advanced' EM (based
> on real power measurements) which models total power (static + dynamic),
> so better reflects real HW.

Advanced :(

-- 
viresh