6 * TI UCD90120, UCD90124, UCD90160, UCD9090, and UCD90910
8 Prefixes: 'ucd90120', 'ucd90124', 'ucd90160', 'ucd9090', 'ucd90910'
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
20 Author: Guenter Roeck <linux@roeck-us.net>
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.
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.
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.
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.
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.
59 This driver is a client driver to the core PMBus driver. Please see
60 Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
66 This driver does not auto-detect devices. You will have to instantiate the
67 devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
74 The driver supports standard PMBus driver platform data. Please see
75 Documentation/hwmon/pmbus.rst for details.
81 The following attributes are supported. Limits are read-write; all other
82 attributes are read-only.
84 ======================= ========================================================
85 in[1-12]_label "vout[1-12]".
86 in[1-12]_input Measured voltage. From READ_VOUT register.
87 in[1-12]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register.
88 in[1-12]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register.
89 in[1-12]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register.
90 in[1-12]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT
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.
94 in[1-12]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT
96 in[1-12]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT
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.
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
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.
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.
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.
120 fan[1-4]_input Fan RPM.
121 fan[1-4]_alarm Fan alarm.
122 fan[1-4]_fault Fan fault.
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.
129 ======================= ========================================================