mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 20:22:09 +00:00
005cc9b4f1
Add description of emc2305 driver. Signed-off-by: Michael Shych <michaelsh@nvidia.com> Reviewed-by: Vadim Pasternak <vadimp@nvidia.com> Link: https://lore.kernel.org/r/20220810171552.56417-4-michaelsh@nvidia.com [groeck: Fixed htmldocs warnings] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
38 lines
1.6 KiB
ReStructuredText
38 lines
1.6 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
|
|
|
|
Kernel driver emc2305
|
|
=====================
|
|
|
|
Supported chips:
|
|
Microchip EMC2305, EMC2303, EMC2302, EMC2301
|
|
|
|
Addresses scanned: I2C 0x27, 0x2c, 0x2d, 0x2e, 0x2f, 0x4c, 0x4d
|
|
Prefixes: 'emc2305'
|
|
|
|
Datasheet: Publicly available at the Microchip website :
|
|
https://www.microchip.com/en-us/product/EMC2305
|
|
|
|
Description:
|
|
------------
|
|
This driver implements support for Microchip EMC2301/2/3/5 RPM-based PWM Fan Controller.
|
|
The EMC2305 Fan Controller supports up to 5 independently controlled PWM fan drives.
|
|
Fan rotation speeds are reported in RPM.
|
|
The driver supports the RPM-based PWM control to keep a fan at the desired speed.
|
|
The driver provides the possibility to have one common PWM interface for all FANs
|
|
or up to the maximum available or configured independent PWMs.
|
|
|
|
The driver provides the following sysfs interfaces in hwmon subsystem:
|
|
|
|
================= == ===================================================
|
|
fan[1-5]_fault RO files for tachometers TACH1-TACH5 fault indication
|
|
fan[1-5]_input RO files for tachometers TACH1-TACH5 input (in RPM)
|
|
pwm[1-5] RW file for fan[1-5] target duty cycle (0..255)
|
|
================= == ===================================================
|
|
|
|
sysfs interfaces in thermal subsystem:
|
|
|
|
================= == ========================================================================
|
|
cur_state RW file for the current cooling state of the cooling device (0..max_state)
|
|
max_state RO file for the maximum cooling state of the cooling device
|
|
================= == ========================================================================
|