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arm64: dts: meson: radxa-zero2: add pwm-fan support

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The A311D on Zero2 needs active cooling and the board includes a header to
connect a simple fan. Add pwm-fan support with basic thermal properties so
the fan runs when connected.

Suggested-by: Yuntian Zhang <yt@radxa.com>
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240606090615.3946433-1-christianshewitt@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This commit is contained in:
Christian Hewitt
2024-06-06 09:06:15 +00:00
committed by Neil Armstrong
parent f6386b5afa
commit 1d1239a1b0
1 changed files with 24 additions and 0 deletions
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24
arch/arm64/boot/dts/amlogic/meson-g12b-radxa-zero2.dts
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@@ -33,6 +33,13 @@ memory@0 {
reg = <0x0 0x0 0x0 0x80000000>;
};
fan0: pwm-fan {
compatible = "pwm-fan";
#cooling-cells = <2>;
cooling-levels = <0 64 128 192 255>;
pwms = <&pwm_AO_ab 0 40000 0>;
};
gpio-keys-polled {
compatible = "gpio-keys-polled";
poll-interval = <100>;
@@ -286,6 +293,23 @@ &cpu103 {
clock-latency = <50000>;
};
&cpu_thermal {
trips {
cpu_active: cpu-active {
temperature = <70000>; /* millicelsius */
hysteresis = <2000>; /* millicelsius */
type = "active";
};
};
cooling-maps {
map2 {
trip = <&cpu_active>;
cooling-device = <&fan0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
};
};
};
&frddr_a {
status = "okay";
};