93 lines
2.6 KiB
ReStructuredText
93 lines
2.6 KiB
ReStructuredText
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.. SPDX-License-Identifier: GPL-2.0
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Kernel driver lt7182s
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=====================
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Supported chips:
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* ADI LT7182S
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Prefix: 'lt7182s'
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Addresses scanned: -
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Datasheet: https://www.analog.com/en/products/lt7182s.html
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Author: Guenter Roeck <linux@roeck-us.net>
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Description
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-----------
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LT7182S is a Dual Channel 6A, 20V PolyPhase Step-Down Silent Switcher with
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Digital Power System Management support.
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Usage Notes
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-----------
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This driver does not probe for PMBus devices. You will have to instantiate
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devices explicitly.
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Example: the following commands will load the driver for a LT7182S
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at address 0x4f on I2C bus #4::
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# modprobe lt7182s
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# echo lt7182s 0x4f > /sys/bus/i2c/devices/i2c-4/new_device
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It can also be instantiated by declaring an entry in device tree.
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Sysfs attributes
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----------------
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======================= ====================================
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curr[1-2]_label "iin[12]"
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curr[1-2]_input Measured input current
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curr[1-2]_max Maximum input current
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curr[1-2]_max_alarm Current high alarm
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curr[3-4]_label "iout[1-2]"
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curr[3-4]_input Measured output current
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curr[3-4]_highest Highest measured output current
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curr[3-4]_max Maximum output current
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curr[3-4]_max_alarm Output current high alarm
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in[1-2]_label "vin[12]"
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in[1-2]_input Measured input voltage
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in[1-2]_highest Highest measured input voltage
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in[1-2]_crit Critical maximum input voltage
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in[1-2]_crit_alarm Input voltage critical high alarm
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in[1-2]_min Minimum input voltage
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in[1-2]_min_alarm Input voltage low alarm
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in[1-2]_rated_min Rated minimum input voltage
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in[1-2]_rated_max Rated maximum input voltage
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in1_reset_history Write to reset history for all attributes
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in[3-5]_label "vmon[1-3]"
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in[3-5]_input Measured voltage on ITH1/ITH2/EXTVCC pins
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Only available if enabled with MFR_ADC_CONTROL_LT7182S
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command.
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in[3-4|6-7]_label "vout[1-2]"
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in[3-4|6-7]_input Measured output voltage
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in[3-4|6-7]_highest Highest measured output voltage
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in[3-4|6-7]_lcrit Critical minimum output voltage
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in[3-4|6-7]_lcrit_alarm Output voltage critical low alarm
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in[3-4|6-7]_min Minimum output voltage
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in[3-4|6-7]_max_alarm Output voltage low alarm
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in[3-4|6-7]_max Maximum output voltage
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in[3-4|6-7]_max_alarm Output voltage high alarm
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in[3-4|6-7]_crit Critical maximum output voltage
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in[3-4|6-7]_crit_alarm Output voltage critical high alarm
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power[1-2]_label "pout[1-2]"
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power[1-2]_input Measured output power
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temp1_input Measured temperature
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temp1_crit Critical high temperature
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temp1_crit_alarm Chip temperature critical high alarm
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temp1_max Maximum temperature
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temp1_max_alarm Chip temperature high alarm
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======================= ====================================
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