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+Kernel driver max31760
+======================
+
+Supported chips:
+ * Analog Devices MAX31760
+
+ Prefix: 'max31760'
+
+ Addresses scanned: none
+
+ Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX31760.pdf
+
+
+Author: Ibrahim Tilki <Ibrahim.Tilki@analog.com>
+
+Description
+-----------
+
+MAX31760 is a precision fan speed controller with nonvolatile lookup table.
+Device has one internal and one external temperature sensor support.
+Controls two fans and measures their speeds.
+Generates hardware alerts when programmable max and critical temperatures are exceeded.
+Supports direct and temperature based automatic fan control.
+
+Temperature measurement range: from -55°C to 125°C
+
+Temperature Resolution: 11 Bits, ±0.125°C
+
+Please refer how to instantiate this driver: Documentation/i2c/instantiating-devices.rst
+
+Lookup table for auto fan control
+---------------------------------
+
+========= =================================
+LUT Index Name
+========= =================================
+1 PWM value for T < +18°C
+2 PWM value for +18°C ≤ T < +20°C
+3 PWM value for +20°C ≤ T < +22°C
+... ...
+47 PWM value for +108°C ≤ T < +110°C
+48 PWM value for T ≥ +110°C
+========= =================================
+
+Sysfs entries
+-------------
+
+=============================== =================================================================================
+fan[1-2]_input Fan speed (in RPM)
+fan[1-2]_enable Enable fan readings and fan fault alarms
+fan[1-2]_fault Fan fault status
+temp[1-2]_label "Remote" and "Local" temperature channel labels
+temp[1-2]_input Temperature sensor readings (in millidegrees Celsius)
+temp1_fault Remote temperature sensor fault status
+temp[1-2]_max Temperature max value. Asserts "ALERT" pin when exceeded
+temp[1-2]_max_alarm Temperature max alarm status
+temp[1-2]_crit Temperature critical value. Asserts "SHDN" pin when exceeded
+temp[1-2]_crit_alarm Temperature critical alarm status
+pwm1 PWM value for direct fan control
+pwm1_enable 1: direct fan control, 2: temperature based auto fan control
+pwm1_freq PWM frequency in hertz
+pwm1_auto_channels_temp Temperature source for auto fan control. 1: temp1, 2: temp2, 3: max(temp1, temp2)
+pwm1_auto_point[1-48]_pwm PWM value for LUT point
+pwm1_auto_point_temp_hyst Temperature hysteresis for auto fan control. Can be either 2000mC or 4000mC
+=============================== =================================================================================
Adding documentation for max31760 fan speed controller Signed-off-by: Ibrahim Tilki <Ibrahim.Tilki@analog.com> --- Documentation/hwmon/max31760.rst | 65 ++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 Documentation/hwmon/max31760.rst