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Sun, 28 Jun 2026 16:00:51 -0700 (PDT) From: Rosen Penev To: devicetree@vger.kernel.org Cc: Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Dennis Gilmore , linux-arm-kernel@lists.infradead.org (moderated list:ARM/Marvell Kirkwood and Armada 370, 375, 38x,...), linux-kernel@vger.kernel.org (open list) Subject: [PATCH 4/4] ARM: dts: helios4: wire LM75 into a thermal zone with fan cooling Date: Sun, 28 Jun 2026 16:00:42 -0700 Message-ID: <20260628230042.1204293-5-rosenp@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260628230042.1204293-1-rosenp@gmail.com> References: <20260628230042.1204293-1-rosenp@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The LM75 temperature sensor on i2c0 creates a hwmon interface but was not referenced by any thermal zone, producing: hwmon hwmon0: temp1_input not attached to any thermal zone Assisted-by: opencode:big-pickle Signed-off-by: Rosen Penev --- .../boot/dts/marvell/armada-388-helios4.dts | 33 +++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/arch/arm/boot/dts/marvell/armada-388-helios4.dts b/arch/arm/boot/dts/marvell/armada-388-helios4.dts index 626a7339a5d0..6e0452217265 100644 --- a/arch/arm/boot/dts/marvell/armada-388-helios4.dts +++ b/arch/arm/boot/dts/marvell/armada-388-helios4.dts @@ -8,6 +8,7 @@ */ /dts-v1/; +#include #include "armada-388.dtsi" #include "armada-38x-solidrun-microsom.dtsi" @@ -68,6 +69,35 @@ reg_5p0v_usb: regulator-5v-usb { vin-supply = <®_12v>; }; + thermal-zones { + board-thermal { + polling-delay-passive = <2000>; + polling-delay = <10000>; + thermal-sensors = <&temp_sensor>; + + trips { + board_alert: board-alert { + temperature = <55000>; + hysteresis = <5000>; + type = "passive"; + }; + board_crit: board-crit { + temperature = <85000>; + hysteresis = <2000>; + type = "critical"; + }; + }; + + cooling-maps { + map0 { + trip = <&board_alert>; + cooling-device = <&fan1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&fan2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; + }; + }; + system-leds { compatible = "gpio-leds"; pinctrl-names = "default"; @@ -129,6 +159,7 @@ fan1: j10-pwm { pwms = <&gpio1 9 40000>; /* Target freq:25 kHz */ pinctrl-names = "default"; pinctrl-0 = <&helios_fan1_pins>; + #cooling-cells = <2>; }; fan2: j17-pwm { @@ -136,6 +167,7 @@ fan2: j17-pwm { pwms = <&gpio1 23 40000>; /* Target freq:25 kHz */ pinctrl-names = "default"; pinctrl-0 = <&helios_fan2_pins>; + #cooling-cells = <2>; }; usb2_phy: usb2-phy { @@ -201,6 +233,7 @@ temp_sensor: temp@4c { compatible = "ti,lm75"; reg = <0x4c>; vcc-supply = <®_3p3v>; + #thermal-sensor-cells = <0>; }; eeprom@53 { -- 2.54.0