linux-kernel - Re: [PATCH 02/15] arm: dts: ls1021a: Add missing cooling device properties for CPUs

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Message-ID: <20180703013508.GA28742@dragon>
Date:   Tue, 3 Jul 2018 09:35:10 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     arm@...nel.org, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        ionela.voinescu@....com,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        chris.redpath@....com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/15] arm: dts: ls1021a: Add missing cooling device
 properties for CPUs

On Fri, May 25, 2018 at 04:01:48PM +0530, Viresh Kumar wrote:
> The cooling device properties, like "#cooling-cells" and
> "dynamic-power-coefficient", should either be present for all the CPUs
> of a cluster or none. If these are present only for a subset of CPUs of
> a cluster then things will start falling apart as soon as the CPUs are
> brought online in a different order. For example, this will happen
> because the operating system looks for such properties in the CPU node
> it is trying to bring up, so that it can register a cooling device.
> 
> Add such missing properties.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>

Applied, thanks.