Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.
1 Kernel driver aspeed-pwm-tacho 2 ============================== 3 4 Supported chips: 5 ASPEED AST2400/2500 6 7 Authors: 8 <jaghu@google.com> 9 10 Description: 11 ------------ 12 This driver implements support for ASPEED AST2400/2500 PWM and Fan Tacho 13 controller. The PWM controller supports upto 8 PWM outputs. The Fan tacho 14 controller supports up to 16 tachometer inputs. 15 16 The driver provides the following sensor accesses in sysfs: 17 18 fanX_input ro provide current fan rotation value in RPM as reported 19 by the fan to the device. 20 21 pwmX rw get or set PWM fan control value. This is an integer 22 value between 0(off) and 255(full speed).