1.. SPDX-License-Identifier: GPL-2.0-or-later
 2
 3Kernel driver aspeed-g6-pwm-tach
 4=================================
 5
 6Supported chips:
 7	ASPEED AST2600
 8
 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 reported
21			by the fan to the device.
22fanX_div	rw	Fan divisor: Supported value are power of 4 (1, 4, 16
23                        64, ... 4194304)
24                        The larger divisor, the less rpm accuracy and the less
25                        affected by fan signal glitch.
26=============== ======= ======================================================