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MAX20751 is a multiphase power controller with internal buck converter. It uses VR12.0 to report the output voltage. This requires an explicit driver, since the VR version can not be auto-detected. The chip supports a manufacturer specific command to fine-tune the output voltage. This command is not currently supported. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
78 lines
2.0 KiB
Plaintext
78 lines
2.0 KiB
Plaintext
Kernel driver max20751
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======================
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Supported chips:
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* maxim MAX20751
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Prefix: 'max20751'
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Addresses scanned: -
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Datasheet: http://datasheets.maximintegrated.com/en/ds/MAX20751.pdf
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Application note: http://pdfserv.maximintegrated.com/en/an/AN5941.pdf
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Author: Guenter Roeck <linux@roeck-us.net>
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Description
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-----------
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This driver supports MAX20751 Multiphase Master with PMBus Interface
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and Internal Buck Converter.
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The driver is a client driver to the core PMBus driver.
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Please see Documentation/hwmon/pmbus for details on PMBus client drivers.
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Usage Notes
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-----------
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This driver does not auto-detect devices. You will have to instantiate the
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devices explicitly. Please see Documentation/i2c/instantiating-devices for
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details.
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Platform data support
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---------------------
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The driver supports standard PMBus driver platform data.
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Sysfs entries
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-------------
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The following attributes are supported.
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in1_label "vin1"
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in1_input Measured voltage.
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in1_min Minimum input voltage.
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in1_max Maximum input voltage.
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in1_lcrit Critical minimum input voltage.
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in1_crit Critical maximum input voltage.
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in1_min_alarm Input voltage low alarm.
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in1_lcrit_alarm Input voltage critical low alarm.
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in1_min_alarm Input voltage low alarm.
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in1_max_alarm Input voltage high alarm.
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in2_label "vout1"
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in2_input Measured voltage.
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in2_min Minimum output voltage.
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in2_max Maximum output voltage.
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in2_lcrit Critical minimum output voltage.
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in2_crit Critical maximum output voltage.
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in2_min_alarm Output voltage low alarm.
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in2_lcrit_alarm Output voltage critical low alarm.
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in2_min_alarm Output voltage low alarm.
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in2_max_alarm Output voltage high alarm.
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curr1_input Measured output current.
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curr1_label "iout1"
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curr1_max Maximum output current.
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curr1_alarm Current high alarm.
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temp1_input Measured temperature.
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temp1_max Maximum temperature.
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temp1_crit Critical high temperature.
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temp1_max_alarm Chip temperature high alarm.
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temp1_crit_alarm Chip temperature critical high alarm.
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power1_input Output power.
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power1_label "pout1"
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