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dt-bindings: max31760: Add description for the fan cooling device

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Update the documentation to reflect the cooling device behavior
of the max31760 fan controller.

Change-Id: I7149329eae88c6f888e2cf383c186266d940b1cb
This commit is contained in:
Minghao Zhang 2021-01-30 07:21:42 +08:00 • committed by Gerrit - the friendly Code Review server
commit d1969c7100
1 changed files with 3 additions and 16 deletions
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19
bindings/thermal/max31760.txt
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@ -1,10 +1,9 @@
Bindings for the Maxim MAX31760 Intelligent Fan Controller
==========================================================
The Maxim MAX31760 is a i2c device providing closed-loop, multi-channel fan
management with temperature. Various fan control features are provided,
including PWM frequency control, temperature hysteresis, dual tachometer
measurements, and fan health monitoring.
The Maxim MAX31760 is a i2c device and will register as a cooling device.
MAX31760 fan controller supports different PWM frequencies, which can be
used as cooling device levels by controlling the fan speed.
Required properties:
- compatible : should be "maxim,max31760".
@ -12,13 +11,7 @@ Required properties:
Optional properties:
- maxim,vdd-supply : regulator supplying the vdd pin
- maxim,vdd-max-uv : regulator max voltage
- maxim,vdd-min-uv : regulator min voltage
- maxim,vdd-load-ua : regulator load current output
- maxim,vcca-supply : regulator supplying the vcca pin
- maxim,vcca-max-uv : regulator max voltage
- maxim,vcca-min-uv : regulator min voltage
- maxim,vcca-load-ua : regulator load current output
- maxim,fan_en_gpio : fan enable gpio
Example:
@ -27,12 +20,6 @@ Example:
reg = <0x50>;
maxim,vdd-supply = <&some_reg>;
regulator-names = "maxim,vdd";
maxim,vdd-max-uv = <3400000>;
maxim,vdd-min-uv = <3300000>;
maxim,vdd-load-ua = <300000>;
maxim,vcca-supply = <&some_reg>;
maxim,vcca-max-uv = <1800000>;
maxim,vcca-min-uv = <1800000>;
maxim,vcca-load-ua = <600000>;
maxim,fan_en_gpio = <&tlmm 10 0x00>;
};