Documentation/hwmon/amc6821.rst

19 -----------
21 This driver implements support for the Texas Instruments amc6821 chip.
22 The chip has one on-chip and one remote temperature sensor and one pwm fan
24 The pwm can be controlled either from software or automatically.
26 The driver provides the following sensor accesses in sysfs:
29 temp1_input		ro	on-chip temperature
57 				combination of the on-chip temperature and
58 				remote-sensor temperature,
72 temp1_auto_point2_temp	rw	The low-temperature limit of the proportional
74 				pwm1 = pwm1_auto_point2_pwm. It can go from
77 				the actual value.
79 				speed. It can go from temp1_auto_point2_temp.
81 				which depend on temp1_auto_point2_temp and
83 				writing to get the actual value.
86 				it defines the passive cooling temperature.
87 				Below this temperature the fan stops in
88 				the closed loop mode.
89 temp2_auto_point2_temp	rw	The low-temperature limit of the proportional
91 				pwm1 = pwm1_auto_point2_pwm. It can go from
97 				values which depend on temp2_auto_point2_temp
104 -----------------
106 If your board has a BIOS that initializes the amc6821 correctly, you should
107 load the module with: init=0.
109 If your board BIOS doesn't initialize the chip, or you want
110 different settings, you can set the following parameters:
112 - init=1,
113 - pwminv: 0 default pwm output, 1 inverts pwm output.