| Kernel driver aspeed-pwm-tacho | |
| ============================== | |
| Supported chips: | |
| ASPEED AST2400/2500 | |
| Authors: | |
| <jaghu@google.com> | |
| Description: | |
| ------------ | |
| This driver implements support for ASPEED AST2400/2500 PWM and Fan Tacho | |
| controller. The PWM controller supports upto 8 PWM outputs. The Fan tacho | |
| controller supports up to 16 tachometer inputs. | |
| The driver provides the following sensor accesses in sysfs: | |
| =============== ======= ===================================================== | |
| fanX_input ro provide current fan rotation value in RPM as reported | |
| by the fan to the device. | |
| pwmX rw get or set PWM fan control value. This is an integer | |
| value between 0(off) and 255(full speed). | |
| =============== ======= ===================================================== |