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arm64: dts: marvell: clearfog-gt-8k: add cooling maps 

Add cooling maps suitable for a Noctua NF-A4/10 fan attached to the
heat sink.  The fan will toggle between two speeds in operation which
seems to be normal behaviour.  More fine-grained steps may help to
reduce this.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
This commit is contained in:
Russell King 2021-03-09 15:20:13 +00:00 committed by Gregory CLEMENT
parent 2d36399c24
commit 9c7d1f4bc0
1 changed files with 121 additions and 1 deletions
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122
arch/arm64/boot/dts/marvell/armada-8040-clearfog-gt-8k.dts
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@ -31,8 +31,11 @@
ethernet2 = &cp1_eth2;
};
pwm {
fan: pwm {
compatible = "pwm-fan";
/* 20% steps */
cooling-levels = <0 51 102 153 204 255>;
#cooling-cells = <2>;
pinctrl-names = "default";
pinctrl-0 = <&cp0_fan_pwm_pins>;
pwms = <&cp0_gpio2 16 40000>;
@ -109,6 +112,123 @@
};
};
&ap_thermal_ic {
polling-delay = <1000>; /* milliseconds */
trips {
ap_active: trip-active {
temperature = <40000>; /* millicelsius */
hysteresis = <4000>; /* millicelsius */
type = "active";
};
};
cooling-maps {
map0 {
trip = <&ap_active>;
cooling-device = <&fan THERMAL_NO_LIMIT 4>;
};
map1 {
trip = <&ap_crit>;
cooling-device = <&fan 4 5>;
};
};
};
&cp0_thermal_ic {
polling-delay = <1000>; /* milliseconds */
trips {
cp0_active0: trip-active0 {
temperature = <40000>; /* millicelsius */
hysteresis = <2500>; /* millicelsius */
type = "active";
};
cp0_active1: trip-active1 {
temperature = <45000>; /* millicelsius */
hysteresis = <2500>; /* millicelsius */
type = "active";
};
cp0_active2: trip-active2 {
temperature = <50000>; /* millicelsius */
hysteresis = <2500>; /* millicelsius */
type = "active";
};
cp0_active3: trip-active3 {
temperature = <60000>; /* millicelsius */
hysteresis = <2500>; /* millicelsius */
type = "active";
};
};
cooling-maps {
map0 {
trip = <&cp0_active0>;
cooling-device = <&fan 0 1>;
};
map1 {
trip = <&cp0_active1>;
cooling-device = <&fan 1 2>;
};
map2 {
trip = <&cp0_active2>;
cooling-device = <&fan 2 3>;
};
map3 {
trip = <&cp0_active3>;
cooling-device = <&fan 3 4>;
};
map4 {
trip = <&cp0_crit>;
cooling-device = <&fan 4 5>;
};
};
};
&cp1_thermal_ic {
polling-delay = <1000>; /* milliseconds */
trips {
cp1_active0: trip-active0 {
temperature = <40000>; /* millicelsius */
hysteresis = <2500>; /* millicelsius */
type = "active";
};
cp1_active1: trip-active1 {
temperature = <45000>; /* millicelsius */
hysteresis = <2500>; /* millicelsius */
type = "active";
};
cp1_active2: trip-active2 {
temperature = <50000>; /* millicelsius */
hysteresis = <2500>; /* millicelsius */
type = "active";
};
cp1_active3: trip-active3 {
temperature = <60000>; /* millicelsius */
hysteresis = <2500>; /* millicelsius */
type = "active";
};
};
cooling-maps {
map0 {
trip = <&cp1_active0>;
cooling-device = <&fan 0 1>;
};
map1 {
trip = <&cp1_active1>;
cooling-device = <&fan 1 2>;
};
map2 {
trip = <&cp1_active2>;
cooling-device = <&fan 2 3>;
};
map3 {
trip = <&cp1_active3>;
cooling-device = <&fan 3 4>;
};
map4 {
trip = <&cp1_crit>;
cooling-device = <&fan 4 5>;
};
};
};
&uart0 {
status = "okay";
pinctrl-0 = <&uart0_pins>;