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- .. SPDX-License-Identifier: GPL-2.0
- Kernel driver gsc-hwmon
- =======================
- Supported chips: Gateworks GSC
- Datasheet: http://trac.gateworks.com/wiki/gsc
- Author: Tim Harvey <[email protected]>
- Description:
- ------------
- This driver supports hardware monitoring for the temperature sensor,
- various ADC's connected to the GSC, and optional FAN controller available
- on some boards.
- Voltage Monitoring
- ------------------
- The voltage inputs are scaled either internally or by the driver depending
- on the GSC version and firmware. The values returned by the driver do not need
- further scaling. The voltage input labels provide the voltage rail name:
- inX_input Measured voltage (mV).
- inX_label Name of voltage rail.
- Temperature Monitoring
- ----------------------
- Temperatures are measured with 12-bit or 10-bit resolution and are scaled
- either internally or by the driver depending on the GSC version and firmware.
- The values returned by the driver reflect millidegree Celcius:
- tempX_input Measured temperature.
- tempX_label Name of temperature input.
- PWM Output Control
- ------------------
- The GSC features 1 PWM output that operates in automatic mode where the
- PWM value will be scalled depending on 6 temperature boundaries.
- The tempeature boundaries are read-write and in millidegree Celcius and the
- read-only PWM values range from 0 (off) to 255 (full speed).
- Fan speed will be set to minimum (off) when the temperature sensor reads
- less than pwm1_auto_point1_temp and maximum when the temperature sensor
- equals or exceeds pwm1_auto_point6_temp.
- pwm1_auto_point[1-6]_pwm PWM value.
- pwm1_auto_point[1-6]_temp Temperature boundary.
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