diff options
| author | Michael Shych <michaelsh@nvidia.com> | 2022-08-10 20:15:52 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2022-09-19 06:17:06 -0700 |
| commit | 005cc9b4f1118309301f5af6c6ee7e74a5b1f46c (patch) | |
| tree | 50cb19b5fd80404cd2ea44d8351b71637dc380ff /Documentation/hwmon/emc2305.rst | |
| parent | 0d8400c5a2ce1595f31b2f99e3139cf5bc5f35fd (diff) | |
| download | linux-stable-005cc9b4f1118309301f5af6c6ee7e74a5b1f46c.tar.gz linux-stable-005cc9b4f1118309301f5af6c6ee7e74a5b1f46c.tar.bz2 linux-stable-005cc9b4f1118309301f5af6c6ee7e74a5b1f46c.zip | |
docs: hwmon: add emc2305.rst to docs
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>
Diffstat (limited to 'Documentation/hwmon/emc2305.rst')
| -rw-r--r-- | Documentation/hwmon/emc2305.rst | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/hwmon/emc2305.rst b/Documentation/hwmon/emc2305.rst new file mode 100644 index 000000000000..2403dbaf2728 --- /dev/null +++ b/Documentation/hwmon/emc2305.rst @@ -0,0 +1,37 @@ +.. 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 +================= == ======================================================================== |