Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 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.