linux-kernel - Re: [PATCH 03/15] arm: dts: mediatek: Add missing cooling device properties for CPUs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <186ed0b1-e365-4b3d-5c50-613d8353708b@gmail.com>
Date:   Mon, 25 Jun 2018 16:58:04 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>, arm@...nel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     Vincent Guittot <vincent.guittot@...aro.org>,
        ionela.voinescu@....com,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        chris.redpath@....com, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/15] arm: dts: mediatek: Add missing cooling device
 properties for CPUs



On 25/05/18 12:31, 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>

pushed to v4.18-next/dts32

Thanks

> ---
>  arch/arm/boot/dts/mt7623.dtsi | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/mt7623.dtsi b/arch/arm/boot/dts/mt7623.dtsi
> index d1eb123bc73b..1cdc346a05e8 100644
> --- a/arch/arm/boot/dts/mt7623.dtsi
> +++ b/arch/arm/boot/dts/mt7623.dtsi
> @@ -92,6 +92,7 @@
>  				 <&apmixedsys CLK_APMIXED_MAINPLL>;
>  			clock-names = "cpu", "intermediate";
>  			operating-points-v2 = <&cpu_opp_table>;
> +			#cooling-cells = <2>;
>  			clock-frequency = <1300000000>;
>  		};
>  
> @@ -103,6 +104,7 @@
>  				 <&apmixedsys CLK_APMIXED_MAINPLL>;
>  			clock-names = "cpu", "intermediate";
>  			operating-points-v2 = <&cpu_opp_table>;
> +			#cooling-cells = <2>;
>  			clock-frequency = <1300000000>;
>  		};
>  
> @@ -114,6 +116,7 @@
>  				 <&apmixedsys CLK_APMIXED_MAINPLL>;
>  			clock-names = "cpu", "intermediate";
>  			operating-points-v2 = <&cpu_opp_table>;
> +			#cooling-cells = <2>;
>  			clock-frequency = <1300000000>;
>  		};
>  	};
>