[RFC,0/2] Introduce 'advanced' Energy Model in DT

Message ID	20220221225131.15836-1-lukasz.luba@arm.com
Headers	show Return-Path: <devicetree-owner@vger.kernel.org> From: Lukasz Luba <lukasz.luba@arm.com> To: linux-kernel@vger.kernel.org Cc: lukasz.luba@arm.com, dietmar.eggemann@arm.com, viresh.kumar@linaro.org, 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: [RFC][PATCH 0/2] Introduce 'advanced' Energy Model in DT Date: Mon, 21 Feb 2022 22:51:29 +0000 Message-Id: <20220221225131.15836-1-lukasz.luba@arm.com> Precedence: bulk
Series	Introduce 'advanced' Energy Model in DT \| expand [RFC,0/2] Introduce 'advanced' Energy Model in DT [RFC,1/2] dt-bindings: power: add Energy Model bindings

Message ID

20220221225131.15836-1-lukasz.luba@arm.com

Headers

From: Lukasz Luba <lukasz.luba@arm.com>
To: linux-kernel@vger.kernel.org
Cc: lukasz.luba@arm.com, dietmar.eggemann@arm.com,
        viresh.kumar@linaro.org, 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: [RFC][PATCH 0/2] Introduce 'advanced' Energy Model in DT
Date: Mon, 21 Feb 2022 22:51:29 +0000
Message-Id: <20220221225131.15836-1-lukasz.luba@arm.com>
Precedence: bulk

Series

Introduce 'advanced' Energy Model in DT | expand

Message

Lukasz Luba Feb. 21, 2022, 10:51 p.m. UTC

Hi all,

This patch set solves a few issues:
1. It allows to register EM from DT, when the voltage information is not
   available. (Some background of the issues present on Chromebook devices
   can be checked at [1].)
2. It allows to register 'advanced' EM from the DT, which is more accurate
   and reflects total power (dynamic + static).

Implementation details:
It adds a new callback in OPP framework to parse the "energy-model" DT
entry. The propsed DT bindings heavily draw on "operating-points" (v1)
schema.

Comments, suggestions are very welcome.

Regards,
Lukasz Luba

[1] https://lore.kernel.org/linux-pm/20220207073036.14901-2-lukasz.luba@arm.com/

Lukasz Luba (2):
  dt-bindings: power: add Energy Model bindings
  opp: Add support for 'advanced' Energy Model in DT

 .../bindings/power/energy-model.yaml          | 51 ++++++++++
 drivers/opp/of.c                              | 95 ++++++++++++++++++-
 2 files changed, 145 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/power/energy-model.yaml