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1Kernel driver aspeed-pwm-tacho2==============================3 4Supported chips:5 ASPEED AST2400/25006 7Authors:8 <jaghu@google.com>9 10Description:11------------12This driver implements support for ASPEED AST2400/2500 PWM and Fan Tacho13controller. The PWM controller supports up to 8 PWM outputs. The Fan tacho14controller supports up to 16 tachometer inputs.15 16The driver provides the following sensor accesses in sysfs:17 18=============== ======= =====================================================19fanX_input ro provide current fan rotation value in RPM as reported20 by the fan to the device.21 22pwmX rw get or set PWM fan control value. This is an integer23 value between 0(off) and 255(full speed).24=============== ======= =====================================================25