0001 Kernel driver aspeed-pwm-tacho
0002 ==============================
0003
0004 Supported chips:
0005 ASPEED AST2400/2500
0006
0007 Authors:
0008 <jaghu@google.com>
0009
0010 Description:
0011 ------------
0012 This driver implements support for ASPEED AST2400/2500 PWM and Fan Tacho
0013 controller. The PWM controller supports upto 8 PWM outputs. The Fan tacho
0014 controller supports up to 16 tachometer inputs.
0015
0016 The driver provides the following sensor accesses in sysfs:
0017
0018 =============== ======= =====================================================
0019 fanX_input ro provide current fan rotation value in RPM as reported
0020 by the fan to the device.
0021
0022 pwmX rw get or set PWM fan control value. This is an integer
0023 value between 0(off) and 255(full speed).
0024 =============== ======= =====================================================
