| Patrick Venture | e620656 | 2018-03-08 15:36:53 -0800 | [diff] [blame] | 1 | # Sensor Config |
| 2 | This program is only meant to control fans given thermal sensor readings. |
| 3 | |
| 4 | All sensors in phosphor-dbus-interfaces for OpenBMC use Sensor.Value as their |
| 5 | accessor. This provides read-only access to information. The goal of the |
| 6 | configuration is to specify how it can be read and if it's a fan, how the PID |
| 7 | output can be written. Initially there'll only be sysfs and passive dbus |
| 8 | access. If a writepath for a sensor is a dbus path, then the system will need |
| 9 | to verify which Control.Fan* interfaces is registered and send values to the |
| 10 | Target property of that interface. |
| 11 | |
| 12 | The min/max specified are to range a writePercent to the sensor. The current |
| 13 | FanController object outputs the new fan speed goal as a PWM percentage. Other |
| 14 | fan PID control objects may not, and they can leave the fields as 0 & 0. |
| 15 | |
| 16 | The only requirement for a sensor is that it isn't writeonly. Only fans are |
| 17 | expected to have a writepath set, and in this current version non-fan sensors |
| 18 | are assumed readonly. |
| 19 | |
| 20 | The sensor names are unique across all zones. |
| 21 | |
| 22 | # PID Config |
| 23 | |
| Gunnar Mills | 08afbb2 | 2018-06-14 08:50:53 -0500 | [diff] [blame] | 24 | The PID configuration is a list of PIDs per zone. |
| Patrick Venture | e620656 | 2018-03-08 15:36:53 -0800 | [diff] [blame] | 25 | |