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