Commit | Line | Data |
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0c0a0615 GR |
1 | Kernel driver ucd9000 |
2 | ===================== | |
3 | ||
4 | Supported chips: | |
1f234ff1 | 5 | |
a470f11c | 6 | * TI UCD90120, UCD90124, UCD90160, UCD90320, UCD9090, and UCD90910 |
1f234ff1 | 7 | |
a470f11c JW |
8 | Prefixes: 'ucd90120', 'ucd90124', 'ucd90160', 'ucd90320', 'ucd9090', |
9 | 'ucd90910' | |
1f234ff1 | 10 | |
0c0a0615 | 11 | Addresses scanned: - |
1f234ff1 | 12 | |
0c0a0615 | 13 | Datasheets: |
1f234ff1 MCC |
14 | |
15 | - http://focus.ti.com/lit/ds/symlink/ucd90120.pdf | |
16 | - http://focus.ti.com/lit/ds/symlink/ucd90124.pdf | |
17 | - http://focus.ti.com/lit/ds/symlink/ucd90160.pdf | |
a470f11c | 18 | - http://focus.ti.com/lit/ds/symlink/ucd90320.pdf |
1f234ff1 MCC |
19 | - http://focus.ti.com/lit/ds/symlink/ucd9090.pdf |
20 | - http://focus.ti.com/lit/ds/symlink/ucd90910.pdf | |
0c0a0615 | 21 | |
e3333e57 | 22 | Author: Guenter Roeck <linux@roeck-us.net> |
0c0a0615 GR |
23 | |
24 | ||
25 | Description | |
26 | ----------- | |
27 | ||
28 | From datasheets: | |
29 | ||
30 | The UCD90120 Power Supply Sequencer and System Health Monitor monitors and | |
31 | sequences up to 12 independent voltage rails. The device integrates a 12-bit | |
32 | ADC with a 2.5V internal reference for monitoring up to 13 power supply voltage, | |
33 | current, or temperature inputs. | |
34 | ||
35 | The UCD90124 is a 12-rail PMBus/I2C addressable power-supply sequencer and | |
36 | system-health monitor. The device integrates a 12-bit ADC for monitoring up to | |
37 | 13 power-supply voltage, current, or temperature inputs. Twenty-six GPIO pins | |
38 | can be used for power supply enables, power-on reset signals, external | |
39 | interrupts, cascading, or other system functions. Twelve of these pins offer PWM | |
40 | functionality. Using these pins, the UCD90124 offers support for fan control, | |
41 | margining, and general-purpose PWM functions. | |
42 | ||
50b2b02c MW |
43 | The UCD90160 is a 16-rail PMBus/I2C addressable power-supply sequencer and |
44 | monitor. The device integrates a 12-bit ADC for monitoring up to 16 power-supply | |
45 | voltage inputs. Twenty-six GPIO pins can be used for power supply enables, | |
46 | power-on reset signals, external interrupts, cascading, or other system | |
47 | functions. Twelve of these pins offer PWM functionality. Using these pins, the | |
48 | UCD90160 offers support for margining, and general-purpose PWM functions. | |
49 | ||
a470f11c JW |
50 | The UCD90320 is a 32-rail PMBus/I2C addressable power-supply sequencer and |
51 | monitor. The 24 integrated ADC channels (AMONx) monitor the power supply | |
52 | voltage, current, and temperature. Of the 84 GPIO pins, 8 can be used as | |
53 | digital monitors (DMONx), 32 to enable the power supply (ENx), 24 for margining | |
54 | (MARx), 16 for logical GPO, and 32 GPIs for cascading, and system function. | |
55 | ||
0c0a0615 GR |
56 | The UCD9090 is a 10-rail PMBus/I2C addressable power-supply sequencer and |
57 | monitor. The device integrates a 12-bit ADC for monitoring up to 10 power-supply | |
58 | voltage inputs. Twenty-three GPIO pins can be used for power supply enables, | |
59 | power-on reset signals, external interrupts, cascading, or other system | |
60 | functions. Ten of these pins offer PWM functionality. Using these pins, the | |
61 | UCD9090 offers support for margining, and general-purpose PWM functions. | |
62 | ||
63 | The UCD90910 is a ten-rail I2C / PMBus addressable power-supply sequencer and | |
64 | system-health monitor. The device integrates a 12-bit ADC for monitoring up to | |
65 | 13 power-supply voltage, current, or temperature inputs. | |
66 | ||
67 | This driver is a client driver to the core PMBus driver. Please see | |
7ebd8b66 | 68 | Documentation/hwmon/pmbus.rst for details on PMBus client drivers. |
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69 | |
70 | ||
71 | Usage Notes | |
72 | ----------- | |
73 | ||
74 | This driver does not auto-detect devices. You will have to instantiate the | |
ccf988b6 | 75 | devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for |
0c0a0615 GR |
76 | details. |
77 | ||
78 | ||
79 | Platform data support | |
80 | --------------------- | |
81 | ||
82 | The driver supports standard PMBus driver platform data. Please see | |
7ebd8b66 | 83 | Documentation/hwmon/pmbus.rst for details. |
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84 | |
85 | ||
86 | Sysfs entries | |
87 | ------------- | |
88 | ||
89 | The following attributes are supported. Limits are read-write; all other | |
90 | attributes are read-only. | |
91 | ||
1f234ff1 | 92 | ======================= ======================================================== |
0c0a0615 GR |
93 | in[1-12]_label "vout[1-12]". |
94 | in[1-12]_input Measured voltage. From READ_VOUT register. | |
40e47125 | 95 | in[1-12]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register. |
0c0a0615 | 96 | in[1-12]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. |
40e47125 | 97 | in[1-12]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register. |
1f234ff1 MCC |
98 | in[1-12]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT |
99 | register. | |
0c0a0615 GR |
100 | in[1-12]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. |
101 | in[1-12]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. | |
1f234ff1 MCC |
102 | in[1-12]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT |
103 | status. | |
104 | in[1-12]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT | |
105 | status. | |
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106 | |
107 | curr[1-12]_label "iout[1-12]". | |
108 | curr[1-12]_input Measured current. From READ_IOUT register. | |
109 | curr[1-12]_max Maximum current. From IOUT_OC_WARN_LIMIT register. | |
1f234ff1 MCC |
110 | curr[1-12]_lcrit Critical minimum output current. From |
111 | IOUT_UC_FAULT_LIMIT register. | |
112 | curr[1-12]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT | |
0c0a0615 | 113 | register. |
0c0a0615 GR |
114 | curr[1-12]_max_alarm Current high alarm. From IOUT_OC_WARNING status. |
115 | curr[1-12]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. | |
116 | ||
117 | For each attribute index, either voltage or current is | |
118 | reported, but not both. If voltage or current is | |
119 | reported depends on the chip configuration. | |
120 | ||
121 | temp[1-2]_input Measured temperatures. From READ_TEMPERATURE_1 and | |
122 | READ_TEMPERATURE_2 registers. | |
123 | temp[1-2]_max Maximum temperature. From OT_WARN_LIMIT register. | |
124 | temp[1-2]_crit Critical high temperature. From OT_FAULT_LIMIT register. | |
125 | temp[1-2]_max_alarm Temperature high alarm. | |
126 | temp[1-2]_crit_alarm Temperature critical high alarm. | |
127 | ||
128 | fan[1-4]_input Fan RPM. | |
129 | fan[1-4]_alarm Fan alarm. | |
130 | fan[1-4]_fault Fan fault. | |
131 | ||
132 | Fan attributes are only available on chips supporting | |
133 | fan control (UCD90124, UCD90910). Attribute files are | |
134 | created only for enabled fans. | |
135 | Note that even though UCD90910 supports up to 10 fans, | |
136 | only up to four fans are currently supported. | |
1f234ff1 | 137 | ======================= ======================================================== |