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- 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 <linux@roeck-us.net>
- 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 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 for
- details.
- Platform data support
- ---------------------
- The driver supports standard PMBus driver platform data. Please see
- Documentation/hwmon/pmbus 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.
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