linux-kernel - [PATCH v3 1/2] ARM: dts: uniphier: add nodes of thermal monitor and thermal zone for PXs2

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Message-Id: <1499255595-31805-2-git-send-email-hayashi.kunihiko@socionext.com>
Date:   Wed,  5 Jul 2017 20:53:14 +0900
From:   Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
To:     robh+dt@...nel.org, mark.rutland@....com,
        yamada.masahiro@...ionext.com
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, masami.hiramatsu@...aro.org,
        jaswinder.singh@...aro.org,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
Subject: [PATCH v3 1/2] ARM: dts: uniphier: add nodes of thermal monitor and thermal zone for PXs2

Add nodes of thermal monitor and thermal zone for UniPhier PXs2 SoC.
The thermal monitor is included in sysctrl.
Furthermore, add cpuN labels for reference in cooling-device property.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
---
 arch/arm/boot/dts/uniphier-pxs2.dtsi | 43 ++++++++++++++++++++++++++++++++----
 1 file changed, 39 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/uniphier-pxs2.dtsi b/arch/arm/boot/dts/uniphier-pxs2.dtsi
index e9e031d..1ff5531 100644
--- a/arch/arm/boot/dts/uniphier-pxs2.dtsi
+++ b/arch/arm/boot/dts/uniphier-pxs2.dtsi
@@ -52,7 +52,7 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		cpu@0 {
+		cpu0: cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a9";
 			reg = <0>;
@@ -60,9 +60,10 @@
 			enable-method = "psci";
 			next-level-cache = <&l2>;
 			operating-points-v2 = <&cpu_opp>;
+			#cooling-cells = <2>;
 		};
 
-		cpu@1 {
+		cpu1: cpu@1 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a9";
 			reg = <1>;
@@ -72,7 +73,7 @@
 			operating-points-v2 = <&cpu_opp>;
 		};
 
-		cpu@2 {
+		cpu2: cpu@2 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a9";
 			reg = <2>;
@@ -82,7 +83,7 @@
 			operating-points-v2 = <&cpu_opp>;
 		};
 
-		cpu@3 {
+		cpu3: cpu@3 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a9";
 			reg = <3>;
@@ -150,6 +151,34 @@
 		};
 	};
 
+	thermal-zones {
+		cpu_thermal {
+			polling-delay-passive = <250>;	/* 250ms */
+			polling-delay = <1000>;		/* 1000ms */
+			thermal-sensors = <&pvtctl>;
+
+			trips {
+				cpu_crit: cpu_crit {
+					temperature = <95000>;	/* 95C */
+					hysteresis = <2000>;
+					type = "critical";
+				};
+				cpu_alert: cpu_alert {
+					temperature = <85000>;	/* 85C */
+					hysteresis = <2000>;
+					type = "passive";
+				};
+			};
+
+			cooling-maps {
+				map {
+					trip = <&cpu_alert>;
+					cooling-device = <&cpu0 (-1) (-1)>;
+				};
+			};
+		};
+	};
+
 	soc {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -387,6 +416,12 @@
 				compatible = "socionext,uniphier-pxs2-reset";
 				#reset-cells = <1>;
 			};
+
+			pvtctl: pvtctl {
+				compatible = "socionext,uniphier-pxs2-thermal";
+				interrupts = <0 3 4>;
+				#thermal-sensor-cells = <0>;
+			};
 		};
 	};
 };
-- 
2.7.4