xref: /linux/Documentation/hwmon/menf21bmc.rst (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0)
1Kernel driver menf21bmc_hwmon
2=============================
3
4Supported chips:
5
6	* MEN 14F021P00
7
8	  Prefix: 'menf21bmc_hwmon'
9
10	  Addresses scanned: -
11
12Author: Andreas Werner <andreas.werner@men.de>
13
14Description
15-----------
16
17The menf21bmc is a Board Management Controller (BMC) which provides an I2C
18interface to the host to access the features implemented in the BMC.
19
20This driver gives access to the voltage monitoring feature of the main
21voltages of the board.
22The voltage sensors are connected to the ADC inputs of the BMC which is
23a PIC16F917 Mikrocontroller.
24
25Usage Notes
26-----------
27
28This driver is part of the MFD driver named "menf21bmc" and does
29not auto-detect devices.
30You will have to instantiate the MFD driver explicitly.
31Please see Documentation/i2c/instantiating-devices.rst for
32details.
33
34Sysfs entries
35-------------
36
37The following attributes are supported. All attributes are read only
38The Limits are read once by the driver.
39
40=============== ==========================
41in0_input	+3.3V input voltage
42in1_input	+5.0V input voltage
43in2_input	+12.0V input voltage
44in3_input	+5V Standby input voltage
45in4_input	VBAT (on board battery)
46
47in[0-4]_min	Minimum voltage limit
48in[0-4]_max	Maximum voltage limit
49
50in0_label	"MON_3_3V"
51in1_label	"MON_5V"
52in2_label	"MON_12V"
53in3_label	"5V_STANDBY"
54in4_label	"VBAT"
55=============== ==========================
56