From 5a603c7a316c3fb4bae4c7cb5c666232864126f2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C5=81ukasz=20M?= Date: Tue, 31 Oct 2023 16:15:06 +0100 Subject: mediatek: mt7981: improve fan behaviour MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This doubles the number of cooling-levels. In addition the fan is turned on with a low speed at lower temperatures and with a higher speed at higher temperatures. This also attempts to reduce the likelihood of constant start-stop actions. The change only affects the GL.iNet MT3000 and has been tested with it. Signed-off-by: Łukasz M --- .../arch/arm64/boot/dts/mediatek/mt7981.dtsi | 52 +++++++++++++--------- .../arch/arm64/boot/dts/mediatek/mt7981.dtsi | 52 +++++++++++++--------- 2 files changed, 64 insertions(+), 40 deletions(-) diff --git a/target/linux/mediatek/files-5.15/arch/arm64/boot/dts/mediatek/mt7981.dtsi b/target/linux/mediatek/files-5.15/arch/arm64/boot/dts/mediatek/mt7981.dtsi index 05d4b7d91d..cb161df81e 100644 --- a/target/linux/mediatek/files-5.15/arch/arm64/boot/dts/mediatek/mt7981.dtsi +++ b/target/linux/mediatek/files-5.15/arch/arm64/boot/dts/mediatek/mt7981.dtsi @@ -55,8 +55,8 @@ fan: pwm-fan { compatible = "pwm-fan"; - /* cooling level (0, 1, 2, 3) : (0% duty, 50% duty, 75% duty, 100% duty) */ - cooling-levels = <0 128 192 255>; + /* cooling level (0, 1, 2, 3, 4, 5, 6, 7) : (0%/25%/37.5%/50%/62.5%/75%/87.5%/100% duty) */ + cooling-levels = <0 63 95 127 159 191 223 255>; #cooling-cells = <2>; status = "disabled"; }; @@ -67,55 +67,67 @@ polling-delay = <1000>; thermal-sensors = <&thermal 0>; trips { - cpu_trip_crit: crit { - temperature = <125000>; + cpu_trip_active_highest: active-highest { + temperature = <70000>; hysteresis = <2000>; - type = "critical"; - }; - - cpu_trip_hot: hot { - temperature = <120000>; - hysteresis = <2000>; - type = "hot"; + type = "active"; }; cpu_trip_active_high: active-high { - temperature = <115000>; + temperature = <60000>; hysteresis = <2000>; type = "active"; }; cpu_trip_active_med: active-med { - temperature = <85000>; + temperature = <50000>; hysteresis = <2000>; type = "active"; }; cpu_trip_active_low: active-low { - temperature = <60000>; + temperature = <45000>; + hysteresis = <2000>; + type = "active"; + }; + + cpu_trip_active_lowest: active-lowest { + temperature = <40000>; hysteresis = <2000>; type = "active"; }; }; cooling-maps { + cpu-active-highest { + /* active: set fan to cooling level 7 */ + cooling-device = <&fan 7 7>; + trip = <&cpu_trip_active_highest>; + }; + cpu-active-high { - /* active: set fan to cooling level 3 */ - cooling-device = <&fan 3 3>; + /* active: set fan to cooling level 5 */ + cooling-device = <&fan 5 5>; trip = <&cpu_trip_active_high>; }; cpu-active-med { - /* active: set fan to cooling level 2 */ - cooling-device = <&fan 2 2>; + /* active: set fan to cooling level 3 */ + cooling-device = <&fan 3 3>; trip = <&cpu_trip_active_med>; }; cpu-active-low { - /* passive: set fan to cooling level 1 */ - cooling-device = <&fan 1 1>; + /* active: set fan to cooling level 2 */ + cooling-device = <&fan 2 2>; trip = <&cpu_trip_active_low>; }; + + cpu-active-lowest { + /* active: set fan to cooling level 1 */ + cooling-device = <&fan 1 1>; + trip = <&cpu_trip_active_lowest>; + }; }; }; }; diff --git a/target/linux/mediatek/files-6.1/arch/arm64/boot/dts/mediatek/mt7981.dtsi b/target/linux/mediatek/files-6.1/arch/arm64/boot/dts/mediatek/mt7981.dtsi index 05d4b7d91d..cb161df81e 100644 --- a/target/linux/mediatek/files-6.1/arch/arm64/boot/dts/mediatek/mt7981.dtsi +++ b/target/linux/mediatek/files-6.1/arch/arm64/boot/dts/mediatek/mt7981.dtsi @@ -55,8 +55,8 @@ fan: pwm-fan { compatible = "pwm-fan"; - /* cooling level (0, 1, 2, 3) : (0% duty, 50% duty, 75% duty, 100% duty) */ - cooling-levels = <0 128 192 255>; + /* cooling level (0, 1, 2, 3, 4, 5, 6, 7) : (0%/25%/37.5%/50%/62.5%/75%/87.5%/100% duty) */ + cooling-levels = <0 63 95 127 159 191 223 255>; #cooling-cells = <2>; status = "disabled"; }; @@ -67,55 +67,67 @@ polling-delay = <1000>; thermal-sensors = <&thermal 0>; trips { - cpu_trip_crit: crit { - temperature = <125000>; + cpu_trip_active_highest: active-highest { + temperature = <70000>; hysteresis = <2000>; - type = "critical"; - }; - - cpu_trip_hot: hot { - temperature = <120000>; - hysteresis = <2000>; - type = "hot"; + type = "active"; }; cpu_trip_active_high: active-high { - temperature = <115000>; + temperature = <60000>; hysteresis = <2000>; type = "active"; }; cpu_trip_active_med: active-med { - temperature = <85000>; + temperature = <50000>; hysteresis = <2000>; type = "active"; }; cpu_trip_active_low: active-low { - temperature = <60000>; + temperature = <45000>; + hysteresis = <2000>; + type = "active"; + }; + + cpu_trip_active_lowest: active-lowest { + temperature = <40000>; hysteresis = <2000>; type = "active"; }; }; cooling-maps { + cpu-active-highest { + /* active: set fan to cooling level 7 */ + cooling-device = <&fan 7 7>; + trip = <&cpu_trip_active_highest>; + }; + cpu-active-high { - /* active: set fan to cooling level 3 */ - cooling-device = <&fan 3 3>; + /* active: set fan to cooling level 5 */ + cooling-device = <&fan 5 5>; trip = <&cpu_trip_active_high>; }; cpu-active-med { - /* active: set fan to cooling level 2 */ - cooling-device = <&fan 2 2>; + /* active: set fan to cooling level 3 */ + cooling-device = <&fan 3 3>; trip = <&cpu_trip_active_med>; }; cpu-active-low { - /* passive: set fan to cooling level 1 */ - cooling-device = <&fan 1 1>; + /* active: set fan to cooling level 2 */ + cooling-device = <&fan 2 2>; trip = <&cpu_trip_active_low>; }; + + cpu-active-lowest { + /* active: set fan to cooling level 1 */ + cooling-device = <&fan 1 1>; + trip = <&cpu_trip_active_lowest>; + }; }; }; }; -- cgit v1.2.3