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gerrit-public.fairphone.software / kernel / msm-4.9 / refs/tags/FP3-REL-Q-3.A.0107 / . / Documentation / hwmon / zl6100
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Guenter Roeck200855e2011-07-29 22:21:53 -0700[diff] [blame]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
Guenter Roeckbc581e62011-10-01 16:50:36 -0700[diff] [blame]9 * Intersil / Zilker Labs ZL2005
10 Prefix: 'zl2005'
11 Addresses scanned: -
12 Datasheet: http://www.intersil.com/data/fn/fn6848.pdf
Guenter Roeck200855e2011-07-29 22:21:53 -0700[diff] [blame]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
Guenter Roeck3360a102012-02-28 13:18:47 -0800[diff] [blame]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
Guenter Roeck443830f2011-10-01 17:35:44 -0700[diff] [blame]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
Guenter Roeck200855e2011-07-29 22:21:53 -0700[diff] [blame]56
Guenter Roecke3333e52013-02-20 20:58:42 -0800[diff] [blame]57Author: Guenter Roeck <linux@roeck-us.net>
Guenter Roeck200855e2011-07-29 22:21:53 -0700[diff] [blame]58
59
60Description
61-----------
62
Masanari Iida92417da2016-02-28 12:57:57 +0900[diff] [blame]63This driver supports hardware monitoring for Intersil / Zilker Labs ZL6100 and
Guenter Roeck200855e2011-07-29 22:21:53 -0700[diff] [blame]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
Guenter Roeckfecfb642012-03-13 09:05:14 -0700[diff] [blame]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.
Guenter Roeck200855e2011-07-29 22:21:53 -0700[diff] [blame]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.
Masanari Iida40e47122012-03-04 23:16:11 +0900[diff] [blame]117in1_lcrit Critical minimum input voltage.
Guenter Roeck200855e2011-07-29 22:21:53 -0700[diff] [blame]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
Guenter Roeck1640eae2012-03-07 03:54:50 -0800[diff] [blame]124in2_label "vmon"
125in2_input Measured voltage on VMON (ZL2004) or VDRV (ZL9101M,
126 ZL9117M) pin. Reported voltage is 16x the voltage on the
127 pin (adjusted internally by the chip).
Masanari Iida1754e4c2013-04-13 01:22:11 +0900[diff] [blame]128in2_lcrit Critical minimum VMON/VDRV Voltage.
Guenter Roeck1640eae2012-03-07 03:54:50 -0800[diff] [blame]129in2_crit Critical maximum VMON/VDRV voltage.
130in2_lcrit_alarm VMON/VDRV voltage critical low alarm.
131in2_crit_alarm VMON/VDRV voltage critical high alarm.
132
133 vmon attributes are supported on ZL2004, ZL9101M,
134 and ZL9117M only.
135
136inX_label "vout1"
137inX_input Measured output voltage.
138inX_lcrit Critical minimum output Voltage.
139inX_crit Critical maximum output voltage.
140inX_lcrit_alarm Critical output voltage critical low alarm.
141inX_crit_alarm Critical output voltage critical high alarm.
142
143 X is 3 for ZL2004, ZL9101M, and ZL9117M, 2 otherwise.
Guenter Roeck200855e2011-07-29 22:21:53 -0700[diff] [blame]144
145curr1_label "iout1"
146curr1_input Measured output current.
147curr1_lcrit Critical minimum output current.
148curr1_crit Critical maximum output current.
149curr1_lcrit_alarm Output current critical low alarm.
150curr1_crit_alarm Output current critical high alarm.
151
152temp[12]_input Measured temperature.
153temp[12]_min Minimum temperature.
154temp[12]_max Maximum temperature.
155temp[12]_lcrit Critical low temperature.
156temp[12]_crit Critical high temperature.
157temp[12]_min_alarm Chip temperature low alarm.
158temp[12]_max_alarm Chip temperature high alarm.
159temp[12]_lcrit_alarm Chip temperature critical low alarm.
160temp[12]_crit_alarm Chip temperature critical high alarm.