linux-kernel - [PATCH 3/3] ARM: dts: imx7d: Add missing cooling device properties for CPUs

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Date:   Thu, 24 Oct 2019 10:34:25 +0800
From:   Anson Huang <Anson.Huang@....com>
To:     robh+dt@...nel.org, mark.rutland@....com, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Linux-imx@....com
Subject: [PATCH 3/3] ARM: dts: imx7d: Add missing cooling device properties for CPUs

The cooling device properties "#cooling-cells" 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: Anson Huang <Anson.Huang@....com>
---
 arch/arm/boot/dts/imx7d.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/imx7d.dtsi b/arch/arm/boot/dts/imx7d.dtsi
index 2792767..d8acd7c 100644
--- a/arch/arm/boot/dts/imx7d.dtsi
+++ b/arch/arm/boot/dts/imx7d.dtsi
@@ -22,6 +22,7 @@
 			reg = <1>;
 			clock-frequency = <996000000>;
 			operating-points-v2 = <&cpu0_opp_table>;
+			#cooling-cells = <2>;
 			cpu-idle-states = <&cpu_sleep_wait>;
 		};
 	};
-- 
2.7.4