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Based on kernel version 4.13.3. Page generated on 2017-09-23 13:55 EST.

1	Kernel driver ucd9000
2	=====================
3	
4	Supported chips:
5	  * TI UCD90120, UCD90124, UCD90160, UCD9090, and UCD90910
6	    Prefixes: 'ucd90120', 'ucd90124', 'ucd90160', 'ucd9090', 'ucd90910'
7	    Addresses scanned: -
8	    Datasheets:
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
14	
15	Author: Guenter Roeck <linux@roeck-us.net>
16	
17	
18	Description
19	-----------
20	
21	From datasheets:
22	
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.
27	
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.
35	
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.
42	
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.
49	
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.
53	
54	This driver is a client driver to the core PMBus driver. Please see
55	Documentation/hwmon/pmbus for details on PMBus client drivers.
56	
57	
58	Usage Notes
59	-----------
60	
61	This driver does not auto-detect devices. You will have to instantiate the
62	devices explicitly. Please see Documentation/i2c/instantiating-devices for
63	details.
64	
65	
66	Platform data support
67	---------------------
68	
69	The driver supports standard PMBus driver platform data. Please see
70	Documentation/hwmon/pmbus for details.
71	
72	
73	Sysfs entries
74	-------------
75	
76	The following attributes are supported. Limits are read-write; all other
77	attributes are read-only.
78	
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.
89	
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
94				register.
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.
98	
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.
102	
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.
109	
110	fan[1-4]_input		Fan RPM.
111	fan[1-4]_alarm		Fan alarm.
112	fan[1-4]_fault		Fan fault.
113	
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.
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