linux-kernel - Re: [PATCH 08/10] ARM64: dts: renesas: Add all CPUs in cooling maps

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Message-ID: <20181123125131.fxrslxz4wvphpe5o@verge.net.au>
Date:   Fri, 23 Nov 2018 13:51:32 +0100
From:   Simon Horman <horms@...ge.net.au>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>, arm@...nel.org,
        Magnus Damm <magnus.damm@...il.com>,
        devicetree@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 08/10] ARM64: dts: renesas: Add all CPUs in cooling maps

On Fri, Nov 16, 2018 at 03:34:31PM +0530, Viresh Kumar wrote:
> Each CPU can (and does) participate in cooling down the system but the
> DT only captures a handful of them, normally CPU0, in the cooling maps.
> Things work by chance currently as under normal circumstances its the
> first CPU of each cluster which is used by the operating systems to
> probe the cooling devices. But as soon as this CPU ordering changes and
> any other CPU is used to bring up the cooling device, we will start
> seeing failures.
> 
> Also the DT is rather incomplete when we list only one CPU in the
> cooling maps, as the hardware doesn't have any such limitations.
> 
> Update cooling maps to include all devices affected by individual trip
> points.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>

Thanks, applied for v4.21.