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84fc4585 GR |
1 | Kernel driver ucd9200 |
2 | ===================== | |
3 | ||
4 | Supported 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 | ||
e3333e57 | 18 | Author: Guenter Roeck <linux@roeck-us.net> |
84fc4585 GR |
19 | |
20 | ||
21 | Description | |
22 | ----------- | |
23 | ||
24 | [From datasheets] UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and | |
25 | UCD9248 are multi-rail, multi-phase synchronous buck digital PWM controllers | |
26 | designed for non-isolated DC/DC power applications. The devices integrate | |
27 | dedicated circuitry for DC/DC loop management with flash memory and a serial | |
28 | interface to support configuration, monitoring and management. | |
29 | ||
30 | This driver is a client driver to the core PMBus driver. Please see | |
31 | Documentation/hwmon/pmbus for details on PMBus client drivers. | |
32 | ||
33 | ||
34 | Usage Notes | |
35 | ----------- | |
36 | ||
37 | This driver does not auto-detect devices. You will have to instantiate the | |
38 | devices explicitly. Please see Documentation/i2c/instantiating-devices for | |
39 | details. | |
40 | ||
41 | ||
42 | Platform data support | |
43 | --------------------- | |
44 | ||
45 | The driver supports standard PMBus driver platform data. Please see | |
46 | Documentation/hwmon/pmbus for details. | |
47 | ||
48 | ||
49 | Sysfs entries | |
50 | ------------- | |
51 | ||
52 | The following attributes are supported. Limits are read-write; all other | |
53 | attributes are read-only. | |
54 | ||
55 | in1_label "vin". | |
56 | in1_input Measured voltage. From READ_VIN register. | |
40e47125 | 57 | in1_min Minimum Voltage. From VIN_UV_WARN_LIMIT register. |
84fc4585 | 58 | in1_max Maximum voltage. From VIN_OV_WARN_LIMIT register. |
40e47125 | 59 | in1_lcrit Critical minimum Voltage. VIN_UV_FAULT_LIMIT register. |
84fc4585 GR |
60 | in1_crit Critical maximum voltage. From VIN_OV_FAULT_LIMIT register. |
61 | in1_min_alarm Voltage low alarm. From VIN_UV_WARNING status. | |
62 | in1_max_alarm Voltage high alarm. From VIN_OV_WARNING status. | |
63 | in1_lcrit_alarm Voltage critical low alarm. From VIN_UV_FAULT status. | |
64 | in1_crit_alarm Voltage critical high alarm. From VIN_OV_FAULT status. | |
65 | ||
66 | in[2-5]_label "vout[1-4]". | |
67 | in[2-5]_input Measured voltage. From READ_VOUT register. | |
40e47125 | 68 | in[2-5]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register. |
84fc4585 | 69 | in[2-5]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. |
40e47125 | 70 | in[2-5]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register. |
84fc4585 GR |
71 | in[2-5]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register. |
72 | in[2-5]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. | |
73 | in[2-5]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. | |
74 | in[2-5]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status. | |
75 | in[2-5]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status. | |
76 | ||
77 | curr1_label "iin". | |
78 | curr1_input Measured current. From READ_IIN register. | |
79 | ||
80 | curr[2-5]_label "iout[1-4]". | |
81 | curr[2-5]_input Measured current. From READ_IOUT register. | |
82 | curr[2-5]_max Maximum current. From IOUT_OC_WARN_LIMIT register. | |
40e47125 | 83 | curr[2-5]_lcrit Critical minimum output current. From IOUT_UC_FAULT_LIMIT |
84fc4585 GR |
84 | register. |
85 | curr[2-5]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register. | |
86 | curr[2-5]_max_alarm Current high alarm. From IOUT_OC_WARNING status. | |
87 | curr[2-5]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. | |
88 | ||
89 | power1_input Measured input power. From READ_PIN register. | |
90 | power1_label "pin" | |
91 | ||
92 | power[2-5]_input Measured output power. From READ_POUT register. | |
93 | power[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 | ||
99 | temp[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. | |
105 | temp[1-5]_max Maximum temperature. From OT_WARN_LIMIT register. | |
106 | temp[1-5]_crit Critical high temperature. From OT_FAULT_LIMIT register. | |
107 | temp[1-5]_max_alarm Temperature high alarm. | |
108 | temp[1-5]_crit_alarm Temperature critical high alarm. | |
109 | ||
110 | fan1_input Fan RPM. ucd9240 only. | |
111 | fan1_alarm Fan alarm. ucd9240 only. | |
112 | fan1_fault Fan fault. ucd9240 only. |