ASPEED AST2400/AST2500 PWM and Fan tach driver

modulename: aspeed-pwm-tacho.ko

configname: CONFIG_SENSORS_ASPEED

Linux Kernel Configuration
└─>Device Drivers
└─>Hardware Monitoring support
└─>ASPEED AST2400/AST2500 PWM and Fan tach driver
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This driver provides support for ASPEED AST2400/AST2500 PWM
and Fan Tacho controllers.

This driver can also be built as a module. If so, the module
will be called aspeed_pwm_tacho.

source code:
selects
CONFIG_REGMAP

depends
CONFIG_HWMON
CONFIG_THERMAL
CONFIG_ARCH_ASPEED or CONFIG_COMPILE_TEST