Kernel driver ucd9200 ===================== Supported chips: * TI UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and UCD9248 Prefixes: 'ucd9220', 'ucd9222', 'ucd9224', 'ucd9240', 'ucd9244', 'ucd9246', 'ucd9248' Addresses scanned: - Datasheets: - http://focus.ti.com/lit/ds/symlink/ucd9220.pdf - http://focus.ti.com/lit/ds/symlink/ucd9222.pdf - http://focus.ti.com/lit/ds/symlink/ucd9224.pdf - http://focus.ti.com/lit/ds/symlink/ucd9240.pdf - http://focus.ti.com/lit/ds/symlink/ucd9244.pdf - http://focus.ti.com/lit/ds/symlink/ucd9246.pdf - http://focus.ti.com/lit/ds/symlink/ucd9248.pdf Author: Guenter Roeck Description ----------- [From datasheets] UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and UCD9248 are multi-rail, multi-phase synchronous buck digital PWM controllers designed for non-isolated DC/DC power applications. The devices integrate dedicated circuitry for DC/DC loop management with flash memory and a serial interface to support configuration, monitoring and management. This driver is a client driver to the core PMBus driver. Please see Documentation/hwmon/pmbus.rst for details on PMBus client drivers. Usage Notes ----------- This driver does not auto-detect devices. You will have to instantiate the devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for details. Platform data support --------------------- The driver supports standard PMBus driver platform data. Please see Documentation/hwmon/pmbus.rst for details. Sysfs entries ------------- The following attributes are supported. Limits are read-write; all other attributes are read-only. ======================= ======================================================== in1_label "vin". in1_input Measured voltage. From READ_VIN register. in1_min Minimum Voltage. From VIN_UV_WARN_LIMIT register. in1_max Maximum voltage. From VIN_OV_WARN_LIMIT register. in1_lcrit Critical minimum Voltage. VIN_UV_FAULT_LIMIT register. in1_crit Critical maximum voltage. From VIN_OV_FAULT_LIMIT register. in1_min_alarm Voltage low alarm. From VIN_UV_WARNING status. in1_max_alarm Voltage high alarm. From VIN_OV_WARNING status. in1_lcrit_alarm Voltage critical low alarm. From VIN_UV_FAULT status. in1_crit_alarm Voltage critical high alarm. From VIN_OV_FAULT status. in[2-5]_label "vout[1-4]". in[2-5]_input Measured voltage. From READ_VOUT register. in[2-5]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register. in[2-5]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. in[2-5]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register. in[2-5]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register. in[2-5]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. in[2-5]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. in[2-5]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status. in[2-5]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status. curr1_label "iin". curr1_input Measured current. From READ_IIN register. curr[2-5]_label "iout[1-4]". curr[2-5]_input Measured current. From READ_IOUT register. curr[2-5]_max Maximum current. From IOUT_OC_WARN_LIMIT register. curr[2-5]_lcrit Critical minimum output current. From IOUT_UC_FAULT_LIMIT register. curr[2-5]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register. curr[2-5]_max_alarm Current high alarm. From IOUT_OC_WARNING status. curr[2-5]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. power1_input Measured input power. From READ_PIN register. power1_label "pin" power[2-5]_input Measured output power. From READ_POUT register. power[2-5]_label "pout[1-4]" The number of output voltage, current, and power attribute sets is determined by the number of enabled rails. See chip datasheets for details. temp[1-5]_input Measured temperatures. From READ_TEMPERATURE_1 and READ_TEMPERATURE_2 registers. temp1 is the chip internal temperature. temp[2-5] are rail temperatures. temp[2-5] attributes are only created for enabled rails. See chip datasheets for details. temp[1-5]_max Maximum temperature. From OT_WARN_LIMIT register. temp[1-5]_crit Critical high temperature. From OT_FAULT_LIMIT register. temp[1-5]_max_alarm Temperature high alarm. temp[1-5]_crit_alarm Temperature critical high alarm. fan1_input Fan RPM. ucd9240 only. fan1_alarm Fan alarm. ucd9240 only. fan1_fault Fan fault. ucd9240 only. ======================= ========================================================