1 Kernel driver ucd9200 2 ===================== 3 4 Supported chips: 5 6 * TI UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and UCD9248 7 8 Prefixes: 'ucd9220', 'ucd9222', 'ucd9224', 'ucd9240', 'ucd9244', 'ucd9246', 9 'ucd9248' 10 11 Addresses scanned: - 12 13 Datasheets: 14 15 - http://focus.ti.com/lit/ds/symlink/ucd9220.pdf 16 - http://focus.ti.com/lit/ds/symlink/ucd9222.pdf 17 - http://focus.ti.com/lit/ds/symlink/ucd9224.pdf 18 - http://focus.ti.com/lit/ds/symlink/ucd9240.pdf 19 - http://focus.ti.com/lit/ds/symlink/ucd9244.pdf 20 - http://focus.ti.com/lit/ds/symlink/ucd9246.pdf 21 - http://focus.ti.com/lit/ds/symlink/ucd9248.pdf 22 23 Author: Guenter Roeck <linux@roeck-us.net> 24 25 26 Description 27 ----------- 28 29 [From datasheets] UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and 30 UCD9248 are multi-rail, multi-phase synchronous buck digital PWM controllers 31 designed for non-isolated DC/DC power applications. The devices integrate 32 dedicated circuitry for DC/DC loop management with flash memory and a serial 33 interface to support configuration, monitoring and management. 34 35 This driver is a client driver to the core PMBus driver. Please see 36 Documentation/hwmon/pmbus.rst for details on PMBus client drivers. 37 38 39 Usage Notes 40 ----------- 41 42 This driver does not auto-detect devices. You will have to instantiate the 43 devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for 44 details. 45 46 47 Platform data support 48 --------------------- 49 50 The driver supports standard PMBus driver platform data. Please see 51 Documentation/hwmon/pmbus.rst for details. 52 53 54 Sysfs entries 55 ------------- 56 57 The following attributes are supported. Limits are read-write; all other 58 attributes are read-only. 59 60 ======================= ======================================================== 61 in1_label "vin". 62 in1_input Measured voltage. From READ_VIN register. 63 in1_min Minimum Voltage. From VIN_UV_WARN_LIMIT register. 64 in1_max Maximum voltage. From VIN_OV_WARN_LIMIT register. 65 in1_lcrit Critical minimum Voltage. VIN_UV_FAULT_LIMIT register. 66 in1_crit Critical maximum voltage. From VIN_OV_FAULT_LIMIT 67 register. 68 in1_min_alarm Voltage low alarm. From VIN_UV_WARNING status. 69 in1_max_alarm Voltage high alarm. From VIN_OV_WARNING status. 70 in1_lcrit_alarm Voltage critical low alarm. From VIN_UV_FAULT status. 71 in1_crit_alarm Voltage critical high alarm. From VIN_OV_FAULT status. 72 73 in[2-5]_label "vout[1-4]". 74 in[2-5]_input Measured voltage. From READ_VOUT register. 75 in[2-5]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register. 76 in[2-5]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. 77 in[2-5]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register. 78 in[2-5]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT 79 register. 80 in[2-5]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. 81 in[2-5]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. 82 in[2-5]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT 83 status. 84 in[2-5]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT 85 status. 86 87 curr1_label "iin". 88 curr1_input Measured current. From READ_IIN register. 89 90 curr[2-5]_label "iout[1-4]". 91 curr[2-5]_input Measured current. From READ_IOUT register. 92 curr[2-5]_max Maximum current. From IOUT_OC_WARN_LIMIT register. 93 curr[2-5]_lcrit Critical minimum output current. From 94 IOUT_UC_FAULT_LIMIT register. 95 curr[2-5]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT 96 register. 97 curr[2-5]_max_alarm Current high alarm. From IOUT_OC_WARNING status. 98 curr[2-5]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. 99 100 power1_input Measured input power. From READ_PIN register. 101 power1_label "pin" 102 103 power[2-5]_input Measured output power. From READ_POUT register. 104 power[2-5]_label "pout[1-4]" 105 106 The number of output voltage, current, and power 107 attribute sets is determined by the number of enabled 108 rails. See chip datasheets for details. 109 110 temp[1-5]_input Measured temperatures. From READ_TEMPERATURE_1 and 111 READ_TEMPERATURE_2 registers. 112 temp1 is the chip internal temperature. temp[2-5] are 113 rail temperatures. temp[2-5] attributes are only 114 created for enabled rails. See chip datasheets for 115 details. 116 temp[1-5]_max Maximum temperature. From OT_WARN_LIMIT register. 117 temp[1-5]_crit Critical high temperature. From OT_FAULT_LIMIT register. 118 temp[1-5]_max_alarm Temperature high alarm. 119 temp[1-5]_crit_alarm Temperature critical high alarm. 120 121 fan1_input Fan RPM. ucd9240 only. 122 fan1_alarm Fan alarm. ucd9240 only. 123 fan1_fault Fan fault. ucd9240 only. 124 ======================= ========================================================
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