linux-kernel - [PATCH 3/3] arm64: dts: ti: k3-am62x-phyboard-lyra-gpio-fan: Update cooling maps

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Message-ID: <20250502142606.2840508-3-d.schultz@phytec.de>
Date: Fri, 2 May 2025 07:26:06 -0700
From: Daniel Schultz <d.schultz@...tec.de>
To: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
	<krzk+dt@...nel.org>, <conor+dt@...nel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
CC: <upstream@...ts.phytec.de>, Daniel Schultz <d.schultz@...tec.de>
Subject: [PATCH 3/3] arm64: dts: ti: k3-am62x-phyboard-lyra-gpio-fan: Update cooling maps

Rename 'main0_thermal_trip0' to a more descriptive name that
includes 'fan', as the current name is too generic for a fan control
trip point.

Move the fan to a new cooling map to avoid overwriting the passive
trip point used for CPU frequency throttling when this overlay is
enabled. Also, add the fan to the existing cooling map.

Signed-off-by: Daniel Schultz <d.schultz@...tec.de>
---
 .../dts/ti/k3-am62x-phyboard-lyra-gpio-fan.dtso    | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62x-phyboard-lyra-gpio-fan.dtso b/arch/arm64/boot/dts/ti/k3-am62x-phyboard-lyra-gpio-fan.dtso
index f0b2fd4165a7..1fd0aaff3193 100644
--- a/arch/arm64/boot/dts/ti/k3-am62x-phyboard-lyra-gpio-fan.dtso
+++ b/arch/arm64/boot/dts/ti/k3-am62x-phyboard-lyra-gpio-fan.dtso
@@ -33,7 +33,7 @@ AM62X_IOPAD(0x0a4, PIN_OUTPUT, 7) /* (M22) GPMC0_DIR.GPIO0_40 */
 &thermal_zones {
 	main0_thermal: main0-thermal {
 		trips {
-			main0_thermal_trip0: main0-thermal-trip {
+			main0_fan: main0-fan {
 				temperature = <65000>;  /* millicelsius */
 				hysteresis = <2000>;    /* millicelsius */
 				type = "active";
@@ -42,7 +42,17 @@ main0_thermal_trip0: main0-thermal-trip {
 
 		cooling-maps {
 			map0 {
-				trip = <&main0_thermal_trip0>;
+				trip = <&main0_alert>;
+				cooling-device =
+					<&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+					<&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+					<&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+					<&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+					<&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+			};
+
+			map1 {
+				trip = <&main0_fan>;
 				cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
 			};
 		};
-- 
2.25.1