| Kernel driver tc654 | |
| =================== | |
| Supported chips: | |
| * Microchip TC654 and TC655 | |
| Prefix: 'tc654' | |
| Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/20001734C.pdf | |
| Authors: | |
| Chris Packham <chris.packham@alliedtelesis.co.nz> | |
| Masahiko Iwamoto <iwamoto@allied-telesis.co.jp> | |
| Description | |
| ----------- | |
| This driver implements support for the Microchip TC654 and TC655. | |
| The TC654 uses the 2-wire interface compatible with the SMBUS 2.0 | |
| specification. The TC654 has two (2) inputs for measuring fan RPM and | |
| one (1) PWM output which can be used for fan control. | |
| Configuration Notes | |
| ------------------- | |
| Ordinarily the pwm1_mode ABI is used for controlling the pwm output | |
| mode. However, for this chip the output is always pwm, and the | |
| pwm1_mode determines if the pwm output is controlled via the pwm1 value | |
| or via the Vin analog input. | |
| Setting pwm1_mode to 1 will cause the pwm output to be driven based on | |
| the pwm1 value. Setting pwm1_mode to 0 will cause the pwm output to be | |
| driven based on the Vin input. |