linux-kernel - [PATCH] [v4.15-stable] arm64: dts: add #cooling-cells to CPU nodes

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Date:   Wed, 21 Feb 2018 17:29:19 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     stable@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        "chunfeng.yun@...iatek.com" <chunfeng.yun@...iatek.com>,
        Chaotian Jing <chaotian.jing@...iatek.com>,
        Daniel Kurtz <djkurtz@...omium.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] [v4.15-stable] arm64: dts: add #cooling-cells to CPU nodes

commit acbf76ee05067c3942852019993f7beb69a0f45f upstream.

dtc complains about the lack of #coolin-cells properties for the
CPU nodes that are referred to as "cooling-device":

arch/arm64/boot/dts/mediatek/mt8173-evb.dtb: Warning (cooling_device_property): Missing property '#cooling-cells' in node /cpus/cpu@0 or bad phandle (referred from /thermal-zones/cpu_thermal/cooling-maps/map@0:cooling-device[0])
arch/arm64/boot/dts/mediatek/mt8173-evb.dtb: Warning (cooling_device_property): Missing property '#cooling-cells' in node /cpus/cpu@100 or bad phandle (referred from /thermal-zones/cpu_thermal/cooling-maps/map@1:cooling-device[0])

Apparently this property must be '<2>' to match the binding.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Tested-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
Signed-off-by: Olof Johansson <olof@...om.net>
[arnd: backported to 4.15]
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm64/boot/dts/mediatek/mt8173.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
index 26396ef53bde..ea407aff1251 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
@@ -81,6 +81,7 @@
 			reg = <0x000>;
 			enable-method = "psci";
 			cpu-idle-states = <&CPU_SLEEP_0>;
+			#cooling-cells = <2>;
 		};
 
 		cpu1: cpu@1 {
@@ -97,6 +98,7 @@
 			reg = <0x100>;
 			enable-method = "psci";
 			cpu-idle-states = <&CPU_SLEEP_0>;
+			#cooling-cells = <2>;
 		};
 
 		cpu3: cpu@101 {
-- 
2.9.0