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1.. SPDX-License-Identifier: GPL-2.0-or-later2 3Kernel driver aspeed-g6-pwm-tach4=================================5 6Supported chips:7 ASPEED AST26008 9Authors:10 <billy_tsai@aspeedtech.com>11 12Description:13------------14This driver implements support for ASPEED AST2600 Fan Tacho controller.15The controller supports up to 16 tachometer inputs.16 17The driver provides the following sensor accesses in sysfs:18 19=============== ======= ======================================================20fanX_input ro provide current fan rotation value in RPM as reported21 by the fan to the device.22fanX_div rw Fan divisor: Supported value are power of 4 (1, 4, 1623 64, ... 4194304)24 The larger divisor, the less rpm accuracy and the less25 affected by fan signal glitch.26=============== ======= ======================================================27