Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm-4.19 / 0d8ee37e2fcb7b77b9c5dee784beca5a215cad4c / . / Documentation / hwmon / ucd9200
blob: fd7d07b1908a9d0c5dfd3c38f3bb73c6cf980210 [file] [log] [blame]
Guenter Roeck84fc4582011-03-06 15:54:27 -0800[diff] [blame]1Kernel driver ucd9200
2=====================
3
4Supported chips:
5 * TI UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and UCD9248
6 Prefixes: 'ucd9220', 'ucd9222', 'ucd9224', 'ucd9240', 'ucd9244', 'ucd9246',
7 'ucd9248'
8 Addresses scanned: -
9 Datasheets:
10 http://focus.ti.com/lit/ds/symlink/ucd9220.pdf
11 http://focus.ti.com/lit/ds/symlink/ucd9222.pdf
12 http://focus.ti.com/lit/ds/symlink/ucd9224.pdf
13 http://focus.ti.com/lit/ds/symlink/ucd9240.pdf
14 http://focus.ti.com/lit/ds/symlink/ucd9244.pdf
15 http://focus.ti.com/lit/ds/symlink/ucd9246.pdf
16 http://focus.ti.com/lit/ds/symlink/ucd9248.pdf
17
18Author: Guenter Roeck <guenter.roeck@ericsson.com>
19
20
21Description
22-----------
23
24[From datasheets] UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and
25UCD9248 are multi-rail, multi-phase synchronous buck digital PWM controllers
26designed for non-isolated DC/DC power applications. The devices integrate
27dedicated circuitry for DC/DC loop management with flash memory and a serial
28interface to support configuration, monitoring and management.
29
30This driver is a client driver to the core PMBus driver. Please see
31Documentation/hwmon/pmbus for details on PMBus client drivers.
32
33
34Usage Notes
35-----------
36
37This driver does not auto-detect devices. You will have to instantiate the
38devices explicitly. Please see Documentation/i2c/instantiating-devices for
39details.
40
41
42Platform data support
43---------------------
44
45The driver supports standard PMBus driver platform data. Please see
46Documentation/hwmon/pmbus for details.
47
48
49Sysfs entries
50-------------
51
52The following attributes are supported. Limits are read-write; all other
53attributes are read-only.
54
55in1_label "vin".
56in1_input Measured voltage. From READ_VIN register.
Masanari Iida40e47122012-03-04 23:16:11 +0900[diff] [blame]57in1_min Minimum Voltage. From VIN_UV_WARN_LIMIT register.
Guenter Roeck84fc4582011-03-06 15:54:27 -0800[diff] [blame]58in1_max Maximum voltage. From VIN_OV_WARN_LIMIT register.
Masanari Iida40e47122012-03-04 23:16:11 +0900[diff] [blame]59in1_lcrit Critical minimum Voltage. VIN_UV_FAULT_LIMIT register.
Guenter Roeck84fc4582011-03-06 15:54:27 -0800[diff] [blame]60in1_crit Critical maximum voltage. From VIN_OV_FAULT_LIMIT register.
61in1_min_alarm Voltage low alarm. From VIN_UV_WARNING status.
62in1_max_alarm Voltage high alarm. From VIN_OV_WARNING status.
63in1_lcrit_alarm Voltage critical low alarm. From VIN_UV_FAULT status.
64in1_crit_alarm Voltage critical high alarm. From VIN_OV_FAULT status.
65
66in[2-5]_label "vout[1-4]".
67in[2-5]_input Measured voltage. From READ_VOUT register.
Masanari Iida40e47122012-03-04 23:16:11 +0900[diff] [blame]68in[2-5]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register.
Guenter Roeck84fc4582011-03-06 15:54:27 -0800[diff] [blame]69in[2-5]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register.
Masanari Iida40e47122012-03-04 23:16:11 +0900[diff] [blame]70in[2-5]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register.
Guenter Roeck84fc4582011-03-06 15:54:27 -0800[diff] [blame]71in[2-5]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register.
72in[2-5]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.
73in[2-5]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.
74in[2-5]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
75in[2-5]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status.
76
77curr1_label "iin".
78curr1_input Measured current. From READ_IIN register.
79
80curr[2-5]_label "iout[1-4]".
81curr[2-5]_input Measured current. From READ_IOUT register.
82curr[2-5]_max Maximum current. From IOUT_OC_WARN_LIMIT register.
Masanari Iida40e47122012-03-04 23:16:11 +0900[diff] [blame]83curr[2-5]_lcrit Critical minimum output current. From IOUT_UC_FAULT_LIMIT
Guenter Roeck84fc4582011-03-06 15:54:27 -0800[diff] [blame]84 register.
85curr[2-5]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
86curr[2-5]_max_alarm Current high alarm. From IOUT_OC_WARNING status.
87curr[2-5]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
88
89power1_input Measured input power. From READ_PIN register.
90power1_label "pin"
91
92power[2-5]_input Measured output power. From READ_POUT register.
93power[2-5]_label "pout[1-4]"
94
95 The number of output voltage, current, and power
96 attribute sets is determined by the number of enabled
97 rails. See chip datasheets for details.
98
99temp[1-5]_input Measured temperatures. From READ_TEMPERATURE_1 and
100 READ_TEMPERATURE_2 registers.
101 temp1 is the chip internal temperature. temp[2-5] are
102 rail temperatures. temp[2-5] attributes are only
103 created for enabled rails. See chip datasheets for
104 details.
105temp[1-5]_max Maximum temperature. From OT_WARN_LIMIT register.
106temp[1-5]_crit Critical high temperature. From OT_FAULT_LIMIT register.
107temp[1-5]_max_alarm Temperature high alarm.
108temp[1-5]_crit_alarm Temperature critical high alarm.
109
110fan1_input Fan RPM. ucd9240 only.
111fan1_alarm Fan alarm. ucd9240 only.
112fan1_fault Fan fault. ucd9240 only.