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.