linux-kernel - Re: [PATCH 4/6] ARM: tegra: Add soctherm and thermal zones to Tegra124 device tree

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Message-ID: <53CD9E89.3030109@nvidia.com>
Date:	Mon, 21 Jul 2014 16:13:13 -0700
From:	Matthew Longnecker <mlongnecker@...dia.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-pm@...r.kernel.org, linux-tegra@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 4/6] ARM: tegra: Add soctherm and thermal zones to Tegra124
 device tree

On 6/27/2014 1:11 AM, Mikko Perttunen wrote:
> This adds the soctherm thermal sensing and management unit to the
> Tegra124 device tree along with the four thermal zones it exports.

Mikko, soctherm doesn't "export thermal zones". I would rewrite your 
desription like this:

   Extend the Tegra124 device tree by adding the soctherm thermal
   sensing and management unit and by defining four thermal zones --
   one for each temperature sensor in soctherm.

System integrators have some flexibility in deciding how many thermal 
zones to define for their platform. For example, an integrator could 
define a single zone for the entire Tegra chip (giving a simple system 
at runtime) or with multiple zones (giving potentially higher 
performance near thermal limits). That's why I don't like the 
implication that soctherm dictates the existence of particular thermal 
zones.

-Matt

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