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7e1449cd BT |
1 | .. SPDX-License-Identifier: GPL-2.0-or-later |
2 | ||
3 | Kernel driver aspeed-g6-pwm-tach | |
4 | ================================= | |
5 | ||
6 | Supported chips: | |
7 | ASPEED AST2600 | |
8 | ||
9 | Authors: | |
10 | <billy_tsai@aspeedtech.com> | |
11 | ||
12 | Description: | |
13 | ------------ | |
14 | This driver implements support for ASPEED AST2600 Fan Tacho controller. | |
15 | The controller supports up to 16 tachometer inputs. | |
16 | ||
17 | The driver provides the following sensor accesses in sysfs: | |
18 | ||
19 | =============== ======= ====================================================== | |
20 | fanX_input ro provide current fan rotation value in RPM as reported | |
21 | by the fan to the device. | |
22 | fanX_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 | =============== ======= ====================================================== |