1 Kernel driver ucd9000 2 ===================== 3 4 Supported chips: 5 6 * TI UCD90120, UCD90124, UCD90160, UCD90320, UCD9090, and UCD90910 7 8 Prefixes: 'ucd90120', 'ucd90124', 'ucd90160', 'ucd90320', 'ucd9090', 9 'ucd90910' 10 11 Addresses scanned: - 12 13 Datasheets: 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 18 - http://focus.ti.com/lit/ds/symlink/ucd90320.pdf 19 - http://focus.ti.com/lit/ds/symlink/ucd9090.pdf 20 - http://focus.ti.com/lit/ds/symlink/ucd90910.pdf 21 22 Author: Guenter Roeck <linux@roeck-us.net> 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 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 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 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 68 Documentation/hwmon/pmbus.rst for details on PMBus client drivers. 69 70 71 Usage Notes 72 ----------- 73 74 This driver does not auto-detect devices. You will have to instantiate the 75 devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for 76 details. 77 78 79 Platform data support 80 --------------------- 81 82 The driver supports standard PMBus driver platform data. Please see 83 Documentation/hwmon/pmbus.rst for details. 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 92 ======================= ======================================================== 93 in[1-12]_label "vout[1-12]". 94 in[1-12]_input Measured voltage. From READ_VOUT register. 95 in[1-12]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register. 96 in[1-12]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. 97 in[1-12]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register. 98 in[1-12]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT 99 register. 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. 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. 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. 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 113 register. 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. 137 ======================= ========================================================
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