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Based on kernel version 3.9. Page generated on 2013-05-02 23:07 EST.

1	Kernel driver ltc2978
2	=====================
3	
4	Supported chips:
5	  * Linear Technology LTC2978
6	    Prefix: 'ltc2978'
7	    Addresses scanned: -
8	    Datasheet: http://www.linear.com/product/ltc2978
9	  * Linear Technology LTC3880
10	    Prefix: 'ltc3880'
11	    Addresses scanned: -
12	    Datasheet: http://www.linear.com/product/ltc3880
13	
14	Author: Guenter Roeck <linux@roeck-us.net>
15	
16	
17	Description
18	-----------
19	
20	The LTC2978 is an octal power supply monitor, supervisor, sequencer and
21	margin controller. The LTC3880 is a dual, PolyPhase DC/DC synchronous
22	step-down switching regulator controller.
23	
24	
25	Usage Notes
26	-----------
27	
28	This driver does not probe for PMBus devices. You will have to instantiate
29	devices explicitly.
30	
31	Example: the following commands will load the driver for an LTC2978 at address
32	0x60 on I2C bus #1:
33	
34	# modprobe ltc2978
35	# echo ltc2978 0x60 > /sys/bus/i2c/devices/i2c-1/new_device
36	
37	
38	Sysfs attributes
39	----------------
40	
41	in1_label		"vin"
42	in1_input		Measured input voltage.
43	in1_min			Minimum input voltage.
44	in1_max			Maximum input voltage.
45	in1_lcrit		Critical minimum input voltage.
46	in1_crit		Critical maximum input voltage.
47	in1_min_alarm		Input voltage low alarm.
48	in1_max_alarm		Input voltage high alarm.
49	in1_lcrit_alarm		Input voltage critical low alarm.
50	in1_crit_alarm		Input voltage critical high alarm.
51	in1_lowest		Lowest input voltage. LTC2978 only.
52	in1_highest		Highest input voltage.
53	in1_reset_history	Reset history. Writing into this attribute will reset
54				history for all attributes.
55	
56	in[2-9]_label		"vout[1-8]". Channels 3 to 9 on LTC2978 only.
57	in[2-9]_input		Measured output voltage.
58	in[2-9]_min		Minimum output voltage.
59	in[2-9]_max		Maximum output voltage.
60	in[2-9]_lcrit		Critical minimum output voltage.
61	in[2-9]_crit		Critical maximum output voltage.
62	in[2-9]_min_alarm	Output voltage low alarm.
63	in[2-9]_max_alarm	Output voltage high alarm.
64	in[2-9]_lcrit_alarm	Output voltage critical low alarm.
65	in[2-9]_crit_alarm	Output voltage critical high alarm.
66	in[2-9]_lowest		Lowest output voltage. LTC2978 only.
67	in[2-9]_highest		Lowest output voltage.
68	in[2-9]_reset_history	Reset history. Writing into this attribute will reset
69				history for all attributes.
70	
71	temp[1-3]_input		Measured temperature.
72				On LTC2978, only one temperature measurement is
73				supported and reflects the internal temperature.
74				On LTC3880, temp1 and temp2 report external
75				temperatures, and temp3 reports the internal
76				temperature.
77	temp[1-3]_min		Mimimum temperature.
78	temp[1-3]_max		Maximum temperature.
79	temp[1-3]_lcrit		Critical low temperature.
80	temp[1-3]_crit		Critical high temperature.
81	temp[1-3]_min_alarm	Chip temperature low alarm.
82	temp[1-3]_max_alarm	Chip temperature high alarm.
83	temp[1-3]_lcrit_alarm	Chip temperature critical low alarm.
84	temp[1-3]_crit_alarm	Chip temperature critical high alarm.
85	temp[1-3]_lowest	Lowest measured temperature. LTC2978 only.
86	temp[1-3]_highest	Highest measured temperature.
87	temp[1-3]_reset_history	Reset history. Writing into this attribute will reset
88				history for all attributes.
89	
90	power[1-2]_label	"pout[1-2]". LTC3880 only.
91	power[1-2]_input	Measured power.
92	
93	curr1_label		"iin". LTC3880 only.
94	curr1_input		Measured input current.
95	curr1_max		Maximum input current.
96	curr1_max_alarm		Input current high alarm.
97	
98	curr[2-3]_label		"iout[1-2]". LTC3880 only.
99	curr[2-3]_input		Measured input current.
100	curr[2-3]_max		Maximum input current.
101	curr[2-3]_crit		Critical input current.
102	curr[2-3]_max_alarm	Input current high alarm.
103	curr[2-3]_crit_alarm	Input current critical high alarm.
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