cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pwm-fan.txt (1964B)


      1Bindings for a fan connected to the PWM lines
      2
      3Required properties:
      4- compatible	: "pwm-fan"
      5- pwms		: the PWM that is used to control the PWM fan
      6- cooling-levels      : PWM duty cycle values in a range from 0 to 255
      7			which correspond to thermal cooling states
      8
      9Optional properties:
     10- fan-supply		: phandle to the regulator that provides power to the fan
     11- interrupts		: This contains an interrupt specifier for each fan
     12			  tachometer output connected to an interrupt source.
     13			  The output signal must generate a defined number of
     14			  interrupts per fan revolution, which require that
     15			  it must be self resetting edge interrupts. See
     16			  interrupt-controller/interrupts.txt for the format.
     17- pulses-per-revolution : define the number of pulses per fan revolution for
     18			  each tachometer input as an integer (default is 2
     19			  interrupts per revolution). The value must be
     20			  greater than zero.
     21
     22Example:
     23	fan0: pwm-fan {
     24		compatible = "pwm-fan";
     25		#cooling-cells = <2>;
     26		pwms = <&pwm 0 10000 0>;
     27		cooling-levels = <0 102 170 230>;
     28	};
     29
     30	thermal-zones {
     31		cpu_thermal: cpu-thermal {
     32			     thermal-sensors = <&tmu 0>;
     33			     polling-delay-passive = <0>;
     34			     polling-delay = <0>;
     35			     trips {
     36					cpu_alert1: cpu-alert1 {
     37						    temperature = <100000>; /* millicelsius */
     38						    hysteresis = <2000>; /* millicelsius */
     39						    type = "passive";
     40					};
     41			     };
     42			     cooling-maps {
     43					map0 {
     44						    trip = <&cpu_alert1>;
     45						    cooling-device = <&fan0 0 1>;
     46					};
     47			     };
     48		};
     49
     50Example 2:
     51	fan0: pwm-fan {
     52		compatible = "pwm-fan";
     53		pwms = <&pwm 0 40000 0>;
     54		fan-supply = <&reg_fan>;
     55		interrupt-parent = <&gpio5>;
     56		interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
     57		pulses-per-revolution = <2>;
     58	};
     59
     60Example 3:
     61	fan0: pwm-fan {
     62		compatible = "pwm-fan";
     63		pwms = <&pwm1 0 25000 0>;
     64		interrupts-extended = <&gpio1 1 IRQ_TYPE_EDGE_FALLING>,
     65			<&gpio2 5 IRQ_TYPE_EDGE_FALLING>;
     66		pulses-per-revolution = <2>, <1>;
     67	};