linux-kernel - [PATCH v4 1/2] ARM: dts: uniphier: add nodes of thermal monitor and thermal zone for PXs2

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Message-Id: <1504487791-20582-2-git-send-email-hayashi.kunihiko@socionext.com>
Date:   Mon,  4 Sep 2017 10:16:30 +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 v4 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 90b020c..c89e0d5 100644
--- a/arch/arm/boot/dts/uniphier-pxs2.dtsi
+++ b/arch/arm/boot/dts/uniphier-pxs2.dtsi
@@ -16,7 +16,7 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		cpu@0 {
+		cpu0: cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a9";
 			reg = <0>;
@@ -24,9 +24,10 @@
 			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>;
@@ -36,7 +37,7 @@
 			operating-points-v2 = <&cpu_opp>;
 		};
 
-		cpu@2 {
+		cpu2: cpu@2 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a9";
 			reg = <2>;
@@ -46,7 +47,7 @@
 			operating-points-v2 = <&cpu_opp>;
 		};
 
-		cpu@3 {
+		cpu3: cpu@3 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a9";
 			reg = <3>;
@@ -114,6 +115,34 @@
 		};
 	};
 
+	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>;
@@ -358,6 +387,12 @@
 				compatible = "socionext,uniphier-pxs2-reset";
 				#reset-cells = <1>;
 			};
+
+			pvtctl: pvtctl {
+				compatible = "socionext,uniphier-pxs2-thermal";
+				interrupts = <0 3 4>;
+				#thermal-sensor-cells = <0>;
+			};
 		};
 
 		nand: nand@...00000 {
-- 
2.7.4