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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npcm750-pwm-fan.txt (2781B)

      1Nuvoton NPCM7xx PWM and Fan Tacho controller device
      2
      3The Nuvoton BMC NPCM7XX supports 8 Pulse-width modulation (PWM)
      4controller outputs and 16 Fan tachometer controller inputs.
      5
      6Required properties for pwm-fan node
      7- #address-cells : should be 1.
      8- #size-cells	: should be 0.
      9- compatible	: "nuvoton,npcm750-pwm-fan" for Poleg NPCM7XX.
     10- reg			: specifies physical base address and size of the registers.
     11- reg-names	: must contain:
     12					* "pwm" for the PWM registers.
     13					* "fan" for the Fan registers.
     14- clocks		: phandle of reference clocks.
     15- clock-names	: must contain
     16					* "pwm" for PWM controller operating clock.
     17					* "fan" for Fan controller operating clock.
     18- interrupts	: contain the Fan interrupts with flags for falling edge.
     19- pinctrl-names	: a pinctrl state named "default" must be defined.
     20- pinctrl-0	: phandle referencing pin configuration of the PWM and Fan
     21					controller ports.
     22
     23fan subnode format:
     24===================
     25Under fan subnode can be upto 8 child nodes, each child node representing a fan.
     26Each fan subnode must have one PWM channel and atleast one Fan tach channel.
     27
     28For PWM channel can be configured cooling-levels to create cooling device.
     29Cooling device could be bound to a thermal zone for the thermal control.
     30
     31Required properties for each child node:
     32- reg : specify the PWM output channel.
     33	integer value in the range 0 through 7, that represent
     34	the PWM channel number that used.
     35
     36- fan-tach-ch : specify the Fan tach input channel.
     37		integer value in the range 0 through 15, that represent
     38		the fan tach channel number that used.
     39
     40		At least one Fan tach input channel is required
     41
     42Optional property for each child node:
     43- cooling-levels: PWM duty cycle values in a range from 0 to 255
     44                  which correspond to thermal cooling states.
     45
     46Examples:
     47
     48pwm_fan:pwm-fan-controller@103000 {
     49	#address-cells = <1>;
     50	#size-cells = <0>;
     51	compatible = "nuvoton,npcm750-pwm-fan";
     52	reg = <0x103000 0x2000>,
     53		<0x180000 0x8000>;
     54	reg-names = "pwm", "fan";
     55	clocks = <&clk NPCM7XX_CLK_APB3>,
     56		<&clk NPCM7XX_CLK_APB4>;
     57	clock-names = "pwm","fan";
     58	interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>,
     59			<GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>,
     60			<GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>,
     61			<GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>,
     62			<GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
     63			<GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>,
     64			<GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>,
     65			<GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
     66	pinctrl-names = "default";
     67	pinctrl-0 = <&pwm0_pins &pwm1_pins &pwm2_pins
     68			&fanin0_pins &fanin1_pins &fanin2_pins
     69			&fanin3_pins &fanin4_pins>;
     70	fan@0 {
     71		reg = <0x00>;
     72		fan-tach-ch = /bits/ 8 <0x00 0x01>;
     73		cooling-levels = <127 255>;
     74	};
     75	fan@1 {
     76		reg = <0x01>;
     77		fan-tach-ch = /bits/ 8 <0x02 0x03>;
     78	};
     79	fan@2 {
     80		reg = <0x02>;
     81		fan-tach-ch = /bits/ 8 <0x04>;
     82	};
     83
     84};