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[v2,11/13] ARM: tegra: Rework SOCTHERM on Tegra124

Message ID 20231012175836.3408077-13-thierry.reding@gmail.com
State New
Headers show
Series thermal: tegra: Do not register cooling device | expand

Commit Message

Thierry Reding Oct. 12, 2023, 5:58 p.m. UTC 
From: Thierry Reding <treding@nvidia.com>

The "heavy throttle" cooling device that SOCTHERM uses isn't a cooling
device in the traditional sense. It's an automatic mechanism that cannot
be actively controlled. Do not expose it as a cooling device and instead
of tying it to a specific trip point, hard-code the temperature at which
the automatic throttling will begin.

While at it, clean up the trip point names to reflect the names used by
the thermal device tree bindings.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
Changes in v2:
- update for DT bindings changes

 arch/arm/boot/dts/nvidia/tegra124.dtsi | 68 ++++++++------------------
 1 file changed, 21 insertions(+), 47 deletions(-)
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Patch

diff --git a/arch/arm/boot/dts/nvidia/tegra124.dtsi b/arch/arm/boot/dts/nvidia/tegra124.dtsi
index 8f1fff373461..6af944fe6769 100644
--- a/arch/arm/boot/dts/nvidia/tegra124.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra124.dtsi
@@ -928,12 +928,14 @@  soctherm: thermal-sensor@700e2000 {
 		#thermal-sensor-cells = <1>;
 
 		throttle-cfgs {
-			throttle_heavy: heavy {
+			heavy {
 				nvidia,priority = <100>;
 				nvidia,cpu-throt-percent = <85>;
 				nvidia,gpu-throt-level = <TEGRA_SOCTHERM_THROT_LEVEL_HIGH>;
-
-				#cooling-cells = <2>;
+				nvidia,thermal-zones = <&{/thermal-zones/cpu-thermal}>,
+						       <&{/thermal-zones/gpu-thermal}>;
+				temperature-millicelsius = <100000>;
+				hysteresis-millicelsius = <4000>;
 			};
 		};
 	};
@@ -1238,112 +1240,84 @@  cpu-thermal {
 			polling-delay-passive = <1000>;
 			polling-delay = <1000>;
 
-			thermal-sensors =
-				<&soctherm TEGRA124_SOCTHERM_SENSOR_CPU>;
+			thermal-sensors = <&soctherm TEGRA124_SOCTHERM_SENSOR_CPU>;
 
 			trips {
-				cpu-shutdown-trip {
+				critical {
 					temperature = <103000>;
 					hysteresis = <0>;
 					type = "critical";
 				};
-				cpu_throttle_trip: throttle-trip {
+
+				hot {
 					temperature = <100000>;
 					hysteresis = <1000>;
 					type = "hot";
 				};
 			};
-
-			cooling-maps {
-				map0 {
-					trip = <&cpu_throttle_trip>;
-					cooling-device = <&throttle_heavy 1 1>;
-				};
-			};
 		};
 
 		mem-thermal {
 			polling-delay-passive = <1000>;
 			polling-delay = <1000>;
 
-			thermal-sensors =
-				<&soctherm TEGRA124_SOCTHERM_SENSOR_MEM>;
+			thermal-sensors = <&soctherm TEGRA124_SOCTHERM_SENSOR_MEM>;
 
 			trips {
-				mem-shutdown-trip {
+				critical {
 					temperature = <103000>;
 					hysteresis = <0>;
 					type = "critical";
 				};
-				mem-throttle-trip {
+
+				hot {
 					temperature = <99000>;
 					hysteresis = <1000>;
 					type = "hot";
 				};
 			};
-
-			cooling-maps {
-				/*
-				 * There are currently no cooling maps,
-				 * because there are no cooling devices.
-				 */
-			};
 		};
 
 		gpu-thermal {
 			polling-delay-passive = <1000>;
 			polling-delay = <1000>;
 
-			thermal-sensors =
-				<&soctherm TEGRA124_SOCTHERM_SENSOR_GPU>;
+			thermal-sensors = <&soctherm TEGRA124_SOCTHERM_SENSOR_GPU>;
 
 			trips {
-				gpu-shutdown-trip {
+				critical {
 					temperature = <101000>;
 					hysteresis = <0>;
 					type = "critical";
 				};
-				gpu_throttle_trip: throttle-trip {
+
+				hot {
 					temperature = <99000>;
 					hysteresis = <1000>;
 					type = "hot";
 				};
 			};
-
-			cooling-maps {
-				map0 {
-					trip = <&gpu_throttle_trip>;
-					cooling-device = <&throttle_heavy 1 1>;
-				};
-			};
 		};
 
 		pllx-thermal {
 			polling-delay-passive = <1000>;
 			polling-delay = <1000>;
 
-			thermal-sensors =
-				<&soctherm TEGRA124_SOCTHERM_SENSOR_PLLX>;
+			thermal-sensors = <&soctherm TEGRA124_SOCTHERM_SENSOR_PLLX>;
 
 			trips {
-				pllx-shutdown-trip {
+				critical {
 					temperature = <103000>;
 					hysteresis = <0>;
 					type = "critical";
 				};
-				pllx-throttle-trip {
+
+				hot {
 					temperature = <99000>;
 					hysteresis = <1000>;
 					type = "hot";
 				};
 			};
-
-			cooling-maps {
-				/*
-				 * There are currently no cooling maps,
-				 * because there are no cooling devices.
-				 */
-			};
 		};
 	};