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| author |   Guenter Roeck <linux@roeck-us.net> | 2020-05-22 06:29:55 -0700 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2020-05-22 06:29:55 -0700 |
| commit | 8054eadca71492f1c9421bcd58ac40f61d5e6e61 (patch) | |
| tree | 060a3a77038e44fec16757a534ced2dae612aa73 /Documentation/hwmon | |
| parent | MAINTAINERS: add entry for AMD energy driver (diff) | |
| parent | hwmon: Add Gateworks System Controller support (diff) | |
| download | linux-dev-8054eadca71492f1c9421bcd58ac40f61d5e6e61.tar.xz linux-dev-8054eadca71492f1c9421bcd58ac40f61d5e6e61.zip | |
Merge tag 'ib-mfd-hwmon-v5.8' into hwmon-next
Immutable branch between MFD and HWMON due for the v5.8 merge window
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/gsc-hwmon.rst | 53 | ||||
| -rw-r--r-- | Documentation/hwmon/index.rst | 1 |
2 files changed, 54 insertions, 0 deletions
diff --git a/Documentation/hwmon/gsc-hwmon.rst b/Documentation/hwmon/gsc-hwmon.rst new file mode 100644 index 000000000000..ffac392a7129 --- /dev/null +++ b/Documentation/hwmon/gsc-hwmon.rst @@ -0,0 +1,53 @@ +.. SPDX-License-Identifier: GPL-2.0 + +Kernel driver gsc-hwmon +======================= + +Supported chips: Gateworks GSC +Datasheet: http://trac.gateworks.com/wiki/gsc +Author: Tim Harvey <tharvey@gateworks.com> + +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. + diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index fb51c7ce8b27..e463fa9a219d 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -61,6 +61,7 @@ Hardware Monitoring Kernel Drivers ftsteutates g760a g762 + gsc-hwmon gl518sm hih6130 ibmaem |