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1.. SPDX-License-Identifier: GPL-2.02 3Kernel driver lt7182s4=====================5 6Supported chips:7 8 * ADI LT7182S9 10 Prefix: 'lt7182s'11 12 Addresses scanned: -13 14 Datasheet: https://www.analog.com/en/products/lt7182s.html15 16Author: Guenter Roeck <linux@roeck-us.net>17 18 19Description20-----------21 22LT7182S is a Dual Channel 6A, 20V PolyPhase Step-Down Silent Switcher with23Digital Power System Management support.24 25 26Usage Notes27-----------28 29This driver does not probe for PMBus devices. You will have to instantiate30devices explicitly.31 32Example: the following commands will load the driver for a LT7182S33at address 0x4f on I2C bus #4::34 35 # modprobe lt7182s36 # echo lt7182s 0x4f > /sys/bus/i2c/devices/i2c-4/new_device37 38It can also be instantiated by declaring an entry in device tree.39 40 41Sysfs attributes42----------------43 44======================= ====================================45curr[1-2]_label "iin[12]"46curr[1-2]_input Measured input current47curr[1-2]_max Maximum input current48curr[1-2]_max_alarm Current high alarm49 50curr[3-4]_label "iout[1-2]"51curr[3-4]_input Measured output current52curr[3-4]_highest Highest measured output current53curr[3-4]_max Maximum output current54curr[3-4]_max_alarm Output current high alarm55 56in[1-2]_label "vin[12]"57in[1-2]_input Measured input voltage58in[1-2]_highest Highest measured input voltage59in[1-2]_crit Critical maximum input voltage60in[1-2]_crit_alarm Input voltage critical high alarm61in[1-2]_min Minimum input voltage62in[1-2]_min_alarm Input voltage low alarm63in[1-2]_rated_min Rated minimum input voltage64in[1-2]_rated_max Rated maximum input voltage65in1_reset_history Write to reset history for all attributes66 67in[3-5]_label "vmon[1-3]"68in[3-5]_input Measured voltage on ITH1/ITH2/EXTVCC pins69 Only available if enabled with MFR_ADC_CONTROL_LT7182S70 command.71 72in[3-4|6-7]_label "vout[1-2]"73in[3-4|6-7]_input Measured output voltage74in[3-4|6-7]_highest Highest measured output voltage75in[3-4|6-7]_lcrit Critical minimum output voltage76in[3-4|6-7]_lcrit_alarm Output voltage critical low alarm77in[3-4|6-7]_min Minimum output voltage78in[3-4|6-7]_max_alarm Output voltage low alarm79in[3-4|6-7]_max Maximum output voltage80in[3-4|6-7]_max_alarm Output voltage high alarm81in[3-4|6-7]_crit Critical maximum output voltage82in[3-4|6-7]_crit_alarm Output voltage critical high alarm83 84power[1-2]_label "pout[1-2]"85power[1-2]_input Measured output power86 87temp1_input Measured temperature88temp1_crit Critical high temperature89temp1_crit_alarm Chip temperature critical high alarm90temp1_max Maximum temperature91temp1_max_alarm Chip temperature high alarm92======================= ====================================93