linux-kernel - [PATCH v7 4/7] arm64: dts: meson: g12: Add minimal thermal zone

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Date:   Fri,  4 Oct 2019 11:01:11 +0200
From:   Guillaume La Roque <glaroque@...libre.com>
To:     amit.kucheria@...aro.org, rui.zhang@...el.com, edubezval@...il.com,
        daniel.lezcano@...aro.org
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org
Subject: [PATCH v7 4/7] arm64: dts: meson: g12: Add minimal thermal zone

Add minimal thermal zone for two temperature sensor
One is located close to the DDR and the other one is
located close to the PLLs (between the CPU and GPU)

Acked-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Reviewed-by: Neil Armstrong <narmstrong@...libre.com>
Tested-by: Christian Hewitt <christianshewitt@...il.com>
Tested-by: Kevin Hilman <khilman@...libre.com>
Signed-off-by: Guillaume La Roque <glaroque@...libre.com>
---
 .../boot/dts/amlogic/meson-g12-common.dtsi    | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
index 0660d9ef6a86..a98c16e163c2 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
@@ -12,6 +12,7 @@
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/reset/amlogic,meson-axg-audio-arb.h>
 #include <dt-bindings/reset/amlogic,meson-g12a-reset.h>
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	interrupt-parent = <&gic>;
@@ -94,6 +95,61 @@
 		#size-cells = <2>;
 		ranges;
 
+		thermal-zones {
+			cpu_thermal: cpu-thermal {
+				polling-delay = <1000>;
+				polling-delay-passive = <100>;
+				thermal-sensors = <&cpu_temp>;
+
+				trips {
+					cpu_passive: cpu-passive {
+						temperature = <85000>; /* millicelsius */
+						hysteresis = <2000>; /* millicelsius */
+						type = "passive";
+					};
+
+					cpu_hot: cpu-hot {
+						temperature = <95000>; /* millicelsius */
+						hysteresis = <2000>; /* millicelsius */
+						type = "hot";
+					};
+
+					cpu_critical: cpu-critical {
+						temperature = <110000>; /* millicelsius */
+						hysteresis = <2000>; /* millicelsius */
+						type = "critical";
+					};
+				};
+			};
+
+			ddr_thermal: ddr-thermal {
+				polling-delay = <1000>;
+				polling-delay-passive = <100>;
+				thermal-sensors = <&ddr_temp>;
+
+				trips {
+					ddr_passive: ddr-passive {
+						temperature = <85000>; /* millicelsius */
+						hysteresis = <2000>; /* millicelsius */
+						type = "passive";
+					};
+
+					ddr_critical: ddr-critical {
+						temperature = <110000>; /* millicelsius */
+						hysteresis = <2000>; /* millicelsius */
+						type = "critical";
+					};
+				};
+
+				cooling-maps {
+					map {
+						trip = <&ddr_passive>;
+						cooling-device = <&mali THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+					};
+				};
+			};
+		};
+
 		ethmac: ethernet@...f0000 {
 			compatible = "amlogic,meson-axg-dwmac",
 				     "snps,dwmac-3.70a",
@@ -2412,6 +2468,7 @@
 			assigned-clock-rates = <0>, /* Do Nothing */
 					       <800000000>,
 					       <0>; /* Do Nothing */
+			#cooling-cells = <2>;
 		};
 	};
 
-- 
2.17.1