From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Xu Subject: Re: [PATCH 3/6] arm64: dts: hisilicon: Add missing cooling device properties for CPUs Date: Sat, 26 May 2018 19:00:20 +0100 Message-ID: <5B09A0B4.2080400@hisilicon.com> References: <0754957a2c3842cf4e36fa27231d327fd8d6d499.1527225682.git.viresh.kumar@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <0754957a2c3842cf4e36fa27231d327fd8d6d499.1527225682.git.viresh.kumar@linaro.org> Sender: linux-kernel-owner@vger.kernel.org To: Viresh Kumar , arm@kernel.org, Rob Herring , Mark Rutland , Catalin Marinas , Will Deacon Cc: Vincent Guittot , ionela.voinescu@arm.com, Daniel Lezcano , chris.redpath@arm.com, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org Hi Viresh, On 2018/5/25 6:40, 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. > > Do minor rearrangement as well to keep ordering consistent. > > Signed-off-by: Viresh Kumar Thanks! Applied to the hisilicon fix tree. Best Regards, Wei > --- > arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 16 +++++++++++++++- > 1 file changed, 15 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi > index 586b281cd531..247024df714f 100644 > --- a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi > +++ b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi > @@ -88,8 +88,8 @@ > next-level-cache = <&CLUSTER0_L2>; > clocks = <&stub_clock 0>; > operating-points-v2 = <&cpu_opp_table>; > - #cooling-cells = <2>; /* min followed by max */ > cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>; > + #cooling-cells = <2>; /* min followed by max */ > dynamic-power-coefficient = <311>; > }; > > @@ -101,6 +101,8 @@ > next-level-cache = <&CLUSTER0_L2>; > operating-points-v2 = <&cpu_opp_table>; > cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>; > + #cooling-cells = <2>; /* min followed by max */ > + dynamic-power-coefficient = <311>; > }; > > cpu2: cpu@2 { > @@ -111,6 +113,8 @@ > next-level-cache = <&CLUSTER0_L2>; > operating-points-v2 = <&cpu_opp_table>; > cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>; > + #cooling-cells = <2>; /* min followed by max */ > + dynamic-power-coefficient = <311>; > }; > > cpu3: cpu@3 { > @@ -121,6 +125,8 @@ > next-level-cache = <&CLUSTER0_L2>; > operating-points-v2 = <&cpu_opp_table>; > cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>; > + #cooling-cells = <2>; /* min followed by max */ > + dynamic-power-coefficient = <311>; > }; > > cpu4: cpu@100 { > @@ -131,6 +137,8 @@ > next-level-cache = <&CLUSTER1_L2>; > operating-points-v2 = <&cpu_opp_table>; > cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>; > + #cooling-cells = <2>; /* min followed by max */ > + dynamic-power-coefficient = <311>; > }; > > cpu5: cpu@101 { > @@ -141,6 +149,8 @@ > next-level-cache = <&CLUSTER1_L2>; > operating-points-v2 = <&cpu_opp_table>; > cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>; > + #cooling-cells = <2>; /* min followed by max */ > + dynamic-power-coefficient = <311>; > }; > > cpu6: cpu@102 { > @@ -151,6 +161,8 @@ > next-level-cache = <&CLUSTER1_L2>; > operating-points-v2 = <&cpu_opp_table>; > cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>; > + #cooling-cells = <2>; /* min followed by max */ > + dynamic-power-coefficient = <311>; > }; > > cpu7: cpu@103 { > @@ -161,6 +173,8 @@ > next-level-cache = <&CLUSTER1_L2>; > operating-points-v2 = <&cpu_opp_table>; > cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>; > + #cooling-cells = <2>; /* min followed by max */ > + dynamic-power-coefficient = <311>; > }; > > CLUSTER0_L2: l2-cache0 { >