0001 Kernel driver ucd9200
0002 =====================
0003
0004 Supported chips:
0005
0006 * TI UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and UCD9248
0007
0008 Prefixes: 'ucd9220', 'ucd9222', 'ucd9224', 'ucd9240', 'ucd9244', 'ucd9246',
0009 'ucd9248'
0010
0011 Addresses scanned: -
0012
0013 Datasheets:
0014
0015 - http://focus.ti.com/lit/ds/symlink/ucd9220.pdf
0016 - http://focus.ti.com/lit/ds/symlink/ucd9222.pdf
0017 - http://focus.ti.com/lit/ds/symlink/ucd9224.pdf
0018 - http://focus.ti.com/lit/ds/symlink/ucd9240.pdf
0019 - http://focus.ti.com/lit/ds/symlink/ucd9244.pdf
0020 - http://focus.ti.com/lit/ds/symlink/ucd9246.pdf
0021 - http://focus.ti.com/lit/ds/symlink/ucd9248.pdf
0022
0023 Author: Guenter Roeck <linux@roeck-us.net>
0024
0025
0026 Description
0027 -----------
0028
0029 [From datasheets] UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and
0030 UCD9248 are multi-rail, multi-phase synchronous buck digital PWM controllers
0031 designed for non-isolated DC/DC power applications. The devices integrate
0032 dedicated circuitry for DC/DC loop management with flash memory and a serial
0033 interface to support configuration, monitoring and management.
0034
0035 This driver is a client driver to the core PMBus driver. Please see
0036 Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
0037
0038
0039 Usage Notes
0040 -----------
0041
0042 This driver does not auto-detect devices. You will have to instantiate the
0043 devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
0044 details.
0045
0046
0047 Platform data support
0048 ---------------------
0049
0050 The driver supports standard PMBus driver platform data. Please see
0051 Documentation/hwmon/pmbus.rst for details.
0052
0053
0054 Sysfs entries
0055 -------------
0056
0057 The following attributes are supported. Limits are read-write; all other
0058 attributes are read-only.
0059
0060 ======================= ========================================================
0061 in1_label "vin".
0062 in1_input Measured voltage. From READ_VIN register.
0063 in1_min Minimum Voltage. From VIN_UV_WARN_LIMIT register.
0064 in1_max Maximum voltage. From VIN_OV_WARN_LIMIT register.
0065 in1_lcrit Critical minimum Voltage. VIN_UV_FAULT_LIMIT register.
0066 in1_crit Critical maximum voltage. From VIN_OV_FAULT_LIMIT
0067 register.
0068 in1_min_alarm Voltage low alarm. From VIN_UV_WARNING status.
0069 in1_max_alarm Voltage high alarm. From VIN_OV_WARNING status.
0070 in1_lcrit_alarm Voltage critical low alarm. From VIN_UV_FAULT status.
0071 in1_crit_alarm Voltage critical high alarm. From VIN_OV_FAULT status.
0072
0073 in[2-5]_label "vout[1-4]".
0074 in[2-5]_input Measured voltage. From READ_VOUT register.
0075 in[2-5]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register.
0076 in[2-5]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register.
0077 in[2-5]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register.
0078 in[2-5]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT
0079 register.
0080 in[2-5]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.
0081 in[2-5]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.
0082 in[2-5]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT
0083 status.
0084 in[2-5]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT
0085 status.
0086
0087 curr1_label "iin".
0088 curr1_input Measured current. From READ_IIN register.
0089
0090 curr[2-5]_label "iout[1-4]".
0091 curr[2-5]_input Measured current. From READ_IOUT register.
0092 curr[2-5]_max Maximum current. From IOUT_OC_WARN_LIMIT register.
0093 curr[2-5]_lcrit Critical minimum output current. From
0094 IOUT_UC_FAULT_LIMIT register.
0095 curr[2-5]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT
0096 register.
0097 curr[2-5]_max_alarm Current high alarm. From IOUT_OC_WARNING status.
0098 curr[2-5]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
0099
0100 power1_input Measured input power. From READ_PIN register.
0101 power1_label "pin"
0102
0103 power[2-5]_input Measured output power. From READ_POUT register.
0104 power[2-5]_label "pout[1-4]"
0105
0106 The number of output voltage, current, and power
0107 attribute sets is determined by the number of enabled
0108 rails. See chip datasheets for details.
0109
0110 temp[1-5]_input Measured temperatures. From READ_TEMPERATURE_1 and
0111 READ_TEMPERATURE_2 registers.
0112 temp1 is the chip internal temperature. temp[2-5] are
0113 rail temperatures. temp[2-5] attributes are only
0114 created for enabled rails. See chip datasheets for
0115 details.
0116 temp[1-5]_max Maximum temperature. From OT_WARN_LIMIT register.
0117 temp[1-5]_crit Critical high temperature. From OT_FAULT_LIMIT register.
0118 temp[1-5]_max_alarm Temperature high alarm.
0119 temp[1-5]_crit_alarm Temperature critical high alarm.
0120
0121 fan1_input Fan RPM. ucd9240 only.
0122 fan1_alarm Fan alarm. ucd9240 only.
0123 fan1_fault Fan fault. ucd9240 only.
0124 ======================= ========================================================
