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