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@xxxxxxxxx> Signed-off-by: Christian Hewitt <christianshewitt@xxxxxxxxx> --- Changes since v1: [0] - Drop min/max state to comply with bindings - Drop ddr_thermal node - Add cpu_thermal trips - Use cooling map2 to avoid clashing with dtsi inherited maps [0] https://patchwork.kernel.org/project/linux-amlogic/patch/20231028075445.3515664-1-christianshewitt@xxxxxxxxx/ .../dts/amlogic/meson-g12b-radxa-zero2.dts | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-radxa-zero2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-radxa-zero2.dts index 890f5bfebb03..8445701100d0 100644 --- a/arch/arm64/boot/dts/amlogic/meson-g12b-radxa-zero2.dts +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-radxa-zero2.dts @@ -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"; }; -- 2.34.1
