The Ten64 desktop appliance has a Noctua NF-A4x20 PWM fan, controlled by a Microchip EMC2301 PWM fan controller. This binding allows the fan speed to be slowed to a quieter level when the system is not busy. Reference: https://ten64doc.traverse.com.au/hardware/fan-control/ Signed-off-by: Mathew McBride <matt@xxxxxxxxxxxxxxx> --- .../boot/dts/freescale/fsl-ls1088a-ten64.dts | 43 +++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts b/arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts index ef6c8967533e..fd8261c9a186 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts +++ b/arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts @@ -87,6 +87,35 @@ sfp_xg1: dpmac1-sfp { los-gpios = <&sfpgpio 7 GPIO_ACTIVE_HIGH>; maximum-power-milliwatt = <2000>; }; + + thermal-zones { + soc { + trips { + fanmid0: fanmid0 { + temperature = <60000>; + hysteresis = <2000>; + type = "active"; + }; + + fanmax0: fanmax0 { + temperature = <70000>; + hysteresis = <2000>; + type = "active"; + }; + }; + + cooling-maps { + map2 { + trip = <&fanmid0>; + cooling-device = <&case_fan 0 6>; + }; + map3 { + trip = <&fanmax0>; + cooling-device = <&case_fan 7 THERMAL_NO_LIMIT>; + }; + }; + }; + }; }; /* XG1 - Upper SFP */ @@ -231,6 +260,20 @@ at97sc: tpm@29 { compatible = "atmel,at97sc3204t"; reg = <0x29>; }; + + fanctrl: emc2301@2f { + reg = <0x2f>; + compatible = "microchip,emc2301"; + #address-cells = <1>; + #size-cells = <0>; + + case_fan: fan@0 { + reg = <0>; + min-rpm = /bits/ 16 <3000>; + max-rpm = /bits/ 16 <5500>; + #cooling-cells = <2>; + }; + }; }; &i2c2 { -- 2.30.1
