linux-kernel - Re: [PATCH v3 3/4] ARM: tegra: Add thermal trip points for Jetson TK1

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Date:	Thu, 21 Aug 2014 12:04:43 -0400
From:	Eduardo Valentin <edubezval@...il.com>
To:	Stephen Warren <swarren@...dotorg.org>
Cc:	Mikko Perttunen <mperttunen@...dia.com>, rui.zhang@...el.com,
	thierry.reding@...il.com, linux-pm@...r.kernel.org,
	linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 3/4] ARM: tegra: Add thermal trip points for Jetson TK1

Stephen,

On Wed, Aug 20, 2014 at 01:44:00PM -0600, Stephen Warren wrote:
> On 08/06/2014 04:25 AM, Mikko Perttunen wrote:
> > This adds critical trip points to the Jetson TK1 device tree.
> > The device will do a controlled shutdown when either the CPU, GPU
> > or MEM thermal zone reaches 101 degrees Celsius.
> 
> > diff --git a/arch/arm/boot/dts/tegra124-jetson-tk1.dts b/arch/arm/boot/dts/tegra124-jetson-tk1.dts
> 
> > +	thermal-zones {
> > +		cpu {
> > +			trips {
> ...
> > +			};
> > +		};
> 
> thermal.txt states that a cooling-maps sub-node is mandatory. However, 
> it seems to be missing here. Is the DT binding documentation overly 
> strict, or do we need to add such a node here?

I believe the binding documentation is correct. I believe this driver
should still evolve a little bit to accomplish full thermal DT
description and include the cooling devices mapping.

All the best,
--
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