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docs: hwmon: add emc2305.rst to docs

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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>
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Michael Shych 2022-08-10 20:15:52 +03:00 committed by Guenter Roeck
parent 0d8400c5a2
commit 005cc9b4f1
2 changed files with 38 additions and 0 deletions
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37
Documentation/hwmon/emc2305.rst Normal file
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.. 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
================= == ========================================================================

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Documentation/hwmon/index.rst
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@ -62,6 +62,7 @@ Hardware Monitoring Kernel Drivers
ds620
emc1403
emc2103
emc2305
emc6w201
f71805f
f71882fg