viapm4
Via smbus controller and via vt82c686a/vt8231 hardware monitor
Usage
viapm* at pci? iic* at viapm?
Overview
The viapm driver provides support for the bus control and power management component of the VIA VT82C596, VT82C596B, VT82C686A, VT8231, VT8233, VT8233A, VT8235, VT8237, VT8237A, VT8237S, VT8251, CX700, VX800, VX855 and VX900 South Bridges. Only the SMBus host interface is supported and can be used with the iic(4) framework.
The viapm driver provides support for the hardware monitor in the VIA VT82C686A and VT8231 South Bridges. The hardware monitor is used with the sysctl(8) interface.
The device has 10 sensors:
| Sensor | Units | Typical Use |
| TSENS1 | uK | CPU temperature |
| TSENS2 | uK | System temperature |
| TSENS3 | uK | Unknown |
| FAN1 | RPM | CPU fan |
| FAN2 | RPM | System fan |
| VSENS1 | uV DC | CPU core voltage (2.0V) |
| VSENS2 | uV DC | North Bridge core voltage (2.5V) |
| Vcore | uV DC | Internal core voltage (3.3V) |
| VSENS3 | uV DC | +5V |
| VSENS4 | uV DC | +12V |
Sensor data is updated every 1.5 seconds.
Releases
43 releases since OpenBSD 3.9; the text changed 7 times.