Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
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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.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.
+======================= ========================================================