From 84eeb2347773a89ae03b936c4ba36267b6dcb28f Mon Sep 17 00:00:00 2001 From: Christian Hewitt Date: Mon, 30 Jan 2023 05:09:18 +0000 Subject: [PATCH 105/120] WIP: arm64: dts: meson: radxa-zero2: add pwm-fan support 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 Signed-off-by: Christian Hewitt --- .../dts/amlogic/meson-g12b-radxa-zero2.dts | 27 +++++++++++++++++++ 1 file changed, 27 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 9a60c5ec2072..567a443356fe 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 +33,15 @@ memory@0 { reg = <0x0 0x0 0x0 0x80000000>; }; + fan0: pwm-fan { + compatible = "pwm-fan"; + #cooling-cells = <2>; + cooling-min-state = <0>; + cooling-max-state = <4>; + 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 +295,24 @@ &cpu103 { clock-latency = <50000>; }; +&cpu_thermal { + cooling-maps { + map0 { + trip = <&cpu_passive>; + cooling-device = <&fan0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; +}; + +&ddr_thermal { + cooling-maps { + map0 { + trip = <&ddr_passive>; + cooling-device = <&fan0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; +}; + &frddr_a { status = "okay"; }; -- 2.34.1