linux-kernel - [PATCH v2 3/5] arm64: dts: mt7986: change cooling trips

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Date:   Wed, 25 Oct 2023 19:08:30 +0200
From:   Frank Wunderlich <linux@...web.de>
To:     linux-mediatek@...ts.infradead.org
Cc:     Frank Wunderlich <frank-w@...lic-files.de>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Daniel Golle <daniel@...rotopia.org>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Eric Woudstra <ericwouds@...il.com>
Subject: [PATCH v2 3/5] arm64: dts: mt7986: change cooling trips

From: Frank Wunderlich <frank-w@...lic-files.de>

Add Critical and hot trips for emergency system shutdown and limiting
system load.

Change passive trip to active to make sure fan is activated on the
lowest trip.

Fixes: 1f5be05132f3 ("arm64: dts: mt7986: add thermal-zones")
Fixes: c26f779a2295 ("arm64: dts: mt7986: add pwm-fan and cooling-maps to BPI-R3 dts")
Suggested-by: Daniel Golle <daniel@...rotopia.org>
Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
---
v2:
- squash patch for bpi-r3 as suggested by angelo
---
 .../dts/mediatek/mt7986a-bananapi-bpi-r3.dts  | 10 +++++-----
 arch/arm64/boot/dts/mediatek/mt7986a.dtsi     | 20 +++++++++++++++----
 2 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
index f9702284607a..b876e501216b 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
@@ -152,16 +152,16 @@ cpu-active-high {
 			trip = <&cpu_trip_active_high>;
 		};
 
-		cpu-active-low {
+		cpu-active-med {
 			/* active: set fan to cooling level 1 */
 			cooling-device = <&fan 1 1>;
-			trip = <&cpu_trip_active_low>;
+			trip = <&cpu_trip_active_med>;
 		};
 
-		cpu-passive {
-			/* passive: set fan to cooling level 0 */
+		cpu-active-low {
+			/* active: set fan to cooling level 0 */
 			cooling-device = <&fan 0 0>;
-			trip = <&cpu_trip_passive>;
+			trip = <&cpu_trip_active_low>;
 		};
 	};
 };
diff --git a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
index 77ddd9e44ed2..fc751e049953 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
@@ -614,22 +614,34 @@ cpu_thermal: cpu-thermal {
 			thermal-sensors = <&thermal 0>;
 
 			trips {
+				cpu_trip_crit: crit {
+					temperature = <125000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+
+				cpu_trip_hot: hot {
+					temperature = <120000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+
 				cpu_trip_active_high: active-high {
 					temperature = <115000>;
 					hysteresis = <2000>;
 					type = "active";
 				};
 
-				cpu_trip_active_low: active-low {
+				cpu_trip_active_med: active-med {
 					temperature = <85000>;
 					hysteresis = <2000>;
 					type = "active";
 				};
 
-				cpu_trip_passive: passive {
-					temperature = <40000>;
+				cpu_trip_active_low: active-low {
+					temperature = <60000>;
 					hysteresis = <2000>;
-					type = "passive";
+					type = "active";
 				};
 			};
 		};
-- 
2.34.1