1 .. SPDX-License-Identifier: GPL-2.0 2 3 Kernel driver emc2305 4 ===================== 5 6 Supported chips: 7 Microchip EMC2305, EMC2303, EMC2302, EMC2301 8 9 Prefixes: 'emc2305' 10 11 Datasheet: Publicly available at the Microchip website : 12 https://www.microchip.com/en-us/product/EMC2305 13 14 Description: 15 ------------ 16 This driver implements support for Microchip EMC2301/2/3/5 RPM-based PWM Fan Controller. 17 The EMC2305 Fan Controller supports up to 5 independently controlled PWM fan drives. 18 Fan rotation speeds are reported in RPM. 19 The driver supports the RPM-based PWM control to keep a fan at the desired speed. 20 The driver provides the possibility to have one common PWM interface for all FANs 21 or up to the maximum available or configured independent PWMs. 22 23 The driver provides the following sysfs interfaces in hwmon subsystem: 24 25 ================= == =================================================== 26 fan[1-5]_fault RO files for tachometers TACH1-TACH5 fault indication 27 fan[1-5]_input RO files for tachometers TACH1-TACH5 input (in RPM) 28 pwm[1-5] RW file for fan[1-5] target duty cycle (0..255) 29 ================= == =================================================== 30 31 sysfs interfaces in thermal subsystem: 32 33 ================= == ======================================================================== 34 cur_state RW file for the current cooling state of the cooling device (0..max_state) 35 max_state RO file for the maximum cooling state of the cooling device 36 ================= == ========================================================================
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.