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1Kernel driver zl6100
2====================
3
4Supported chips:
5 * Intersil / Zilker Labs ZL2004
6 Prefix: 'zl2004'
7 Addresses scanned: -
8 Datasheet: http://www.intersil.com/data/fn/fn6847.pdf
9 * Intersil / Zilker Labs ZL2005
10 Prefix: 'zl2005'
11 Addresses scanned: -
12 Datasheet: http://www.intersil.com/data/fn/fn6848.pdf
13 * Intersil / Zilker Labs ZL2006
14 Prefix: 'zl2006'
15 Addresses scanned: -
16 Datasheet: http://www.intersil.com/data/fn/fn6850.pdf
17 * Intersil / Zilker Labs ZL2008
18 Prefix: 'zl2008'
19 Addresses scanned: -
20 Datasheet: http://www.intersil.com/data/fn/fn6859.pdf
21 * Intersil / Zilker Labs ZL2105
22 Prefix: 'zl2105'
23 Addresses scanned: -
24 Datasheet: http://www.intersil.com/data/fn/fn6851.pdf
25 * Intersil / Zilker Labs ZL2106
26 Prefix: 'zl2106'
27 Addresses scanned: -
28 Datasheet: http://www.intersil.com/data/fn/fn6852.pdf
29 * Intersil / Zilker Labs ZL6100
30 Prefix: 'zl6100'
31 Addresses scanned: -
32 Datasheet: http://www.intersil.com/data/fn/fn6876.pdf
33 * Intersil / Zilker Labs ZL6105
34 Prefix: 'zl6105'
35 Addresses scanned: -
36 Datasheet: http://www.intersil.com/data/fn/fn6906.pdf
37 * Intersil / Zilker Labs ZL9101M
38 Prefix: 'zl9101'
39 Addresses scanned: -
40 Datasheet: http://www.intersil.com/data/fn/fn7669.pdf
41 * Intersil / Zilker Labs ZL9117M
42 Prefix: 'zl9117'
43 Addresses scanned: -
44 Datasheet: http://www.intersil.com/data/fn/fn7914.pdf
45 * Ericsson BMR450, BMR451
46 Prefix: 'bmr450', 'bmr451'
47 Addresses scanned: -
48 Datasheet:
49http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146401
50 * Ericsson BMR462, BMR463, BMR464
51 Prefixes: 'bmr462', 'bmr463', 'bmr464'
52 Addresses scanned: -
53 Datasheet:
54http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146256
55
56
57Author: Guenter Roeck <guenter.roeck@ericsson.com>
58
59
60Description
61-----------
62
63This driver supports hardware montoring for Intersil / Zilker Labs ZL6100 and
64compatible digital DC-DC controllers.
65
66The driver is a client driver to the core PMBus driver. Please see
67Documentation/hwmon/pmbus and Documentation.hwmon/pmbus-core for details
68on PMBus client drivers.
69
70
71Usage Notes
72-----------
73
74This driver does not auto-detect devices. You will have to instantiate the
75devices explicitly. Please see Documentation/i2c/instantiating-devices for
76details.
77
78WARNING: Do not access chip registers using the i2cdump command, and do not use
79any of the i2ctools commands on a command register used to save and restore
80configuration data (0x11, 0x12, 0x15, 0x16, and 0xf4). The chips supported by
81this driver interpret any access to those command registers (including read
82commands) as request to execute the command in question. Unless write accesses
83to those registers are protected, this may result in power loss, board resets,
84and/or Flash corruption. Worst case, your board may turn into a brick.
85
86
87Platform data support
88---------------------
89
90The driver supports standard PMBus driver platform data.
91
92
93Module parameters
94-----------------
95
96delay
97-----
98
99Intersil/Zilker Labs DC-DC controllers require a minimum interval between I2C
100bus accesses. According to Intersil, the minimum interval is 2 ms, though 1 ms
101appears to be sufficient and has not caused any problems in testing. The problem
102is known to affect all currently supported chips. For manual override, the
103driver provides a writeable module parameter, 'delay', which can be used to set
104the interval to a value between 0 and 65,535 microseconds.
105
106
107Sysfs entries
108-------------
109
110The following attributes are supported. Limits are read-write; all other
111attributes are read-only.
112
113in1_label "vin"
114in1_input Measured input voltage.
115in1_min Minimum input voltage.
116in1_max Maximum input voltage.
117in1_lcrit Critical minimum input voltage.
118in1_crit Critical maximum input voltage.
119in1_min_alarm Input voltage low alarm.
120in1_max_alarm Input voltage high alarm.
121in1_lcrit_alarm Input voltage critical low alarm.
122in1_crit_alarm Input voltage critical high alarm.
123
124in2_label "vout1"
125in2_input Measured output voltage.
126in2_lcrit Critical minimum output Voltage.
127in2_crit Critical maximum output voltage.
128in2_lcrit_alarm Critical output voltage critical low alarm.
129in2_crit_alarm Critical output voltage critical high alarm.
130
131curr1_label "iout1"
132curr1_input Measured output current.
133curr1_lcrit Critical minimum output current.
134curr1_crit Critical maximum output current.
135curr1_lcrit_alarm Output current critical low alarm.
136curr1_crit_alarm Output current critical high alarm.
137
138temp[12]_input Measured temperature.
139temp[12]_min Minimum temperature.
140temp[12]_max Maximum temperature.
141temp[12]_lcrit Critical low temperature.
142temp[12]_crit Critical high temperature.
143temp[12]_min_alarm Chip temperature low alarm.
144temp[12]_max_alarm Chip temperature high alarm.
145temp[12]_lcrit_alarm Chip temperature critical low alarm.
146temp[12]_crit_alarm Chip temperature critical high alarm.
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