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0c0a0615 GR |
1 | Kernel driver ucd9000 |
2 | ===================== | |
3 | ||
4 | Supported chips: | |
1f234ff1 | 5 | |
50b2b02c | 6 | * TI UCD90120, UCD90124, UCD90160, UCD9090, and UCD90910 |
1f234ff1 | 7 | |
50b2b02c | 8 | Prefixes: 'ucd90120', 'ucd90124', 'ucd90160', 'ucd9090', 'ucd90910' |
1f234ff1 | 9 | |
0c0a0615 | 10 | Addresses scanned: - |
1f234ff1 | 11 | |
0c0a0615 | 12 | Datasheets: |
1f234ff1 MCC |
13 | |
14 | - http://focus.ti.com/lit/ds/symlink/ucd90120.pdf | |
15 | - http://focus.ti.com/lit/ds/symlink/ucd90124.pdf | |
16 | - http://focus.ti.com/lit/ds/symlink/ucd90160.pdf | |
17 | - http://focus.ti.com/lit/ds/symlink/ucd9090.pdf | |
18 | - http://focus.ti.com/lit/ds/symlink/ucd90910.pdf | |
0c0a0615 | 19 | |
e3333e57 | 20 | Author: Guenter Roeck <linux@roeck-us.net> |
0c0a0615 GR |
21 | |
22 | ||
23 | Description | |
24 | ----------- | |
25 | ||
26 | From datasheets: | |
27 | ||
28 | The UCD90120 Power Supply Sequencer and System Health Monitor monitors and | |
29 | sequences up to 12 independent voltage rails. The device integrates a 12-bit | |
30 | ADC with a 2.5V internal reference for monitoring up to 13 power supply voltage, | |
31 | current, or temperature inputs. | |
32 | ||
33 | The UCD90124 is a 12-rail PMBus/I2C addressable power-supply sequencer and | |
34 | system-health monitor. The device integrates a 12-bit ADC for monitoring up to | |
35 | 13 power-supply voltage, current, or temperature inputs. Twenty-six GPIO pins | |
36 | can be used for power supply enables, power-on reset signals, external | |
37 | interrupts, cascading, or other system functions. Twelve of these pins offer PWM | |
38 | functionality. Using these pins, the UCD90124 offers support for fan control, | |
39 | margining, and general-purpose PWM functions. | |
40 | ||
50b2b02c MW |
41 | The UCD90160 is a 16-rail PMBus/I2C addressable power-supply sequencer and |
42 | monitor. The device integrates a 12-bit ADC for monitoring up to 16 power-supply | |
43 | voltage inputs. Twenty-six GPIO pins can be used for power supply enables, | |
44 | power-on reset signals, external interrupts, cascading, or other system | |
45 | functions. Twelve of these pins offer PWM functionality. Using these pins, the | |
46 | UCD90160 offers support for margining, and general-purpose PWM functions. | |
47 | ||
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48 | The UCD9090 is a 10-rail PMBus/I2C addressable power-supply sequencer and |
49 | monitor. The device integrates a 12-bit ADC for monitoring up to 10 power-supply | |
50 | voltage inputs. Twenty-three GPIO pins can be used for power supply enables, | |
51 | power-on reset signals, external interrupts, cascading, or other system | |
52 | functions. Ten of these pins offer PWM functionality. Using these pins, the | |
53 | UCD9090 offers support for margining, and general-purpose PWM functions. | |
54 | ||
55 | The UCD90910 is a ten-rail I2C / PMBus addressable power-supply sequencer and | |
56 | system-health monitor. The device integrates a 12-bit ADC for monitoring up to | |
57 | 13 power-supply voltage, current, or temperature inputs. | |
58 | ||
59 | This driver is a client driver to the core PMBus driver. Please see | |
7ebd8b66 | 60 | Documentation/hwmon/pmbus.rst for details on PMBus client drivers. |
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61 | |
62 | ||
63 | Usage Notes | |
64 | ----------- | |
65 | ||
66 | This driver does not auto-detect devices. You will have to instantiate the | |
ccf988b6 | 67 | devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for |
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68 | details. |
69 | ||
70 | ||
71 | Platform data support | |
72 | --------------------- | |
73 | ||
74 | The driver supports standard PMBus driver platform data. Please see | |
7ebd8b66 | 75 | Documentation/hwmon/pmbus.rst for details. |
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76 | |
77 | ||
78 | Sysfs entries | |
79 | ------------- | |
80 | ||
81 | The following attributes are supported. Limits are read-write; all other | |
82 | attributes are read-only. | |
83 | ||
1f234ff1 | 84 | ======================= ======================================================== |
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85 | in[1-12]_label "vout[1-12]". |
86 | in[1-12]_input Measured voltage. From READ_VOUT register. | |
40e47125 | 87 | in[1-12]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register. |
0c0a0615 | 88 | in[1-12]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. |
40e47125 | 89 | in[1-12]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register. |
1f234ff1 MCC |
90 | in[1-12]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT |
91 | register. | |
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92 | in[1-12]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. |
93 | in[1-12]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. | |
1f234ff1 MCC |
94 | in[1-12]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT |
95 | status. | |
96 | in[1-12]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT | |
97 | status. | |
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98 | |
99 | curr[1-12]_label "iout[1-12]". | |
100 | curr[1-12]_input Measured current. From READ_IOUT register. | |
101 | curr[1-12]_max Maximum current. From IOUT_OC_WARN_LIMIT register. | |
1f234ff1 MCC |
102 | curr[1-12]_lcrit Critical minimum output current. From |
103 | IOUT_UC_FAULT_LIMIT register. | |
104 | curr[1-12]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT | |
0c0a0615 | 105 | register. |
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106 | curr[1-12]_max_alarm Current high alarm. From IOUT_OC_WARNING status. |
107 | curr[1-12]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. | |
108 | ||
109 | For each attribute index, either voltage or current is | |
110 | reported, but not both. If voltage or current is | |
111 | reported depends on the chip configuration. | |
112 | ||
113 | temp[1-2]_input Measured temperatures. From READ_TEMPERATURE_1 and | |
114 | READ_TEMPERATURE_2 registers. | |
115 | temp[1-2]_max Maximum temperature. From OT_WARN_LIMIT register. | |
116 | temp[1-2]_crit Critical high temperature. From OT_FAULT_LIMIT register. | |
117 | temp[1-2]_max_alarm Temperature high alarm. | |
118 | temp[1-2]_crit_alarm Temperature critical high alarm. | |
119 | ||
120 | fan[1-4]_input Fan RPM. | |
121 | fan[1-4]_alarm Fan alarm. | |
122 | fan[1-4]_fault Fan fault. | |
123 | ||
124 | Fan attributes are only available on chips supporting | |
125 | fan control (UCD90124, UCD90910). Attribute files are | |
126 | created only for enabled fans. | |
127 | Note that even though UCD90910 supports up to 10 fans, | |
128 | only up to four fans are currently supported. | |
1f234ff1 | 129 | ======================= ======================================================== |