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1Kernel driver ucd92002=====================3 4Supported chips:5 6 * TI UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and UCD92487 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.pdf16 - http://focus.ti.com/lit/ds/symlink/ucd9222.pdf17 - http://focus.ti.com/lit/ds/symlink/ucd9224.pdf18 - http://focus.ti.com/lit/ds/symlink/ucd9240.pdf19 - http://focus.ti.com/lit/ds/symlink/ucd9244.pdf20 - http://focus.ti.com/lit/ds/symlink/ucd9246.pdf21 - http://focus.ti.com/lit/ds/symlink/ucd9248.pdf22 23Author: Guenter Roeck <linux@roeck-us.net>24 25 26Description27-----------28 29[From datasheets] UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and30UCD9248 are multi-rail, multi-phase synchronous buck digital PWM controllers31designed for non-isolated DC/DC power applications. The devices integrate32dedicated circuitry for DC/DC loop management with flash memory and a serial33interface to support configuration, monitoring and management.34 35This driver is a client driver to the core PMBus driver. Please see36Documentation/hwmon/pmbus.rst for details on PMBus client drivers.37 38 39Usage Notes40-----------41 42This driver does not auto-detect devices. You will have to instantiate the43devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for44details.45 46 47Platform data support48---------------------49 50The driver supports standard PMBus driver platform data. Please see51Documentation/hwmon/pmbus.rst for details.52 53 54Sysfs entries55-------------56 57The following attributes are supported. Limits are read-write; all other58attributes are read-only.59 60======================= ========================================================61in1_label "vin".62in1_input Measured voltage. From READ_VIN register.63in1_min Minimum Voltage. From VIN_UV_WARN_LIMIT register.64in1_max Maximum voltage. From VIN_OV_WARN_LIMIT register.65in1_lcrit Critical minimum Voltage. VIN_UV_FAULT_LIMIT register.66in1_crit Critical maximum voltage. From VIN_OV_FAULT_LIMIT67 register.68in1_min_alarm Voltage low alarm. From VIN_UV_WARNING status.69in1_max_alarm Voltage high alarm. From VIN_OV_WARNING status.70in1_lcrit_alarm Voltage critical low alarm. From VIN_UV_FAULT status.71in1_crit_alarm Voltage critical high alarm. From VIN_OV_FAULT status.72 73in[2-5]_label "vout[1-4]".74in[2-5]_input Measured voltage. From READ_VOUT register.75in[2-5]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register.76in[2-5]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register.77in[2-5]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register.78in[2-5]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT79 register.80in[2-5]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.81in[2-5]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.82in[2-5]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT83 status.84in[2-5]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT85 status.86 87curr1_label "iin".88curr1_input Measured current. From READ_IIN register.89 90curr[2-5]_label "iout[1-4]".91curr[2-5]_input Measured current. From READ_IOUT register.92curr[2-5]_max Maximum current. From IOUT_OC_WARN_LIMIT register.93curr[2-5]_lcrit Critical minimum output current. From94 IOUT_UC_FAULT_LIMIT register.95curr[2-5]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT96 register.97curr[2-5]_max_alarm Current high alarm. From IOUT_OC_WARNING status.98curr[2-5]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.99 100power1_input Measured input power. From READ_PIN register.101power1_label "pin"102 103power[2-5]_input Measured output power. From READ_POUT register.104power[2-5]_label "pout[1-4]"105 106 The number of output voltage, current, and power107 attribute sets is determined by the number of enabled108 rails. See chip datasheets for details.109 110temp[1-5]_input Measured temperatures. From READ_TEMPERATURE_1 and111 READ_TEMPERATURE_2 registers.112 temp1 is the chip internal temperature. temp[2-5] are113 rail temperatures. temp[2-5] attributes are only114 created for enabled rails. See chip datasheets for115 details.116temp[1-5]_max Maximum temperature. From OT_WARN_LIMIT register.117temp[1-5]_crit Critical high temperature. From OT_FAULT_LIMIT register.118temp[1-5]_max_alarm Temperature high alarm.119temp[1-5]_crit_alarm Temperature critical high alarm.120 121fan1_input Fan RPM. ucd9240 only.122fan1_alarm Fan alarm. ucd9240 only.123fan1_fault Fan fault. ucd9240 only.124======================= ========================================================125