1.. SPDX-License-Identifier: GPL-2.0 2 3Kernel driver lt7182s 4===================== 5 6Supported chips: 7 8 * ADI LT7182S 9 10 Prefix: 'lt7182s' 11 12 Addresses scanned: - 13 14 Datasheet: https://www.analog.com/en/products/lt7182s.html 15 16Author: Guenter Roeck <linux@roeck-us.net> 17 18 19Description 20----------- 21 22LT7182S is a Dual Channel 6A, 20V PolyPhase Step-Down Silent Switcher with 23Digital Power System Management support. 24 25 26Usage Notes 27----------- 28 29This driver does not probe for PMBus devices. You will have to instantiate 30devices explicitly. 31 32Example: the following commands will load the driver for a LT7182S 33at address 0x4f on I2C bus #4:: 34 35 # modprobe lt7182s 36 # echo lt7182s 0x4f > /sys/bus/i2c/devices/i2c-4/new_device 37 38It can also be instantiated by declaring an entry in device tree. 39 40 41Sysfs attributes 42---------------- 43 44======================= ==================================== 45curr[1-2]_label "iin[12]" 46curr[1-2]_input Measured input current 47curr[1-2]_max Maximum input current 48curr[1-2]_max_alarm Current high alarm 49 50curr[3-4]_label "iout[1-2]" 51curr[3-4]_input Measured output current 52curr[3-4]_highest Highest measured output current 53curr[3-4]_max Maximum output current 54curr[3-4]_max_alarm Output current high alarm 55 56in[1-2]_label "vin[12]" 57in[1-2]_input Measured input voltage 58in[1-2]_highest Highest measured input voltage 59in[1-2]_crit Critical maximum input voltage 60in[1-2]_crit_alarm Input voltage critical high alarm 61in[1-2]_min Minimum input voltage 62in[1-2]_min_alarm Input voltage low alarm 63in[1-2]_rated_min Rated minimum input voltage 64in[1-2]_rated_max Rated maximum input voltage 65in1_reset_history Write to reset history for all attributes 66 67in[3-5]_label "vmon[1-3]" 68in[3-5]_input Measured voltage on ITH1/ITH2/EXTVCC pins 69 Only available if enabled with MFR_ADC_CONTROL_LT7182S 70 command. 71 72in[3-4|6-7]_label "vout[1-2]" 73in[3-4|6-7]_input Measured output voltage 74in[3-4|6-7]_highest Highest measured output voltage 75in[3-4|6-7]_lcrit Critical minimum output voltage 76in[3-4|6-7]_lcrit_alarm Output voltage critical low alarm 77in[3-4|6-7]_min Minimum output voltage 78in[3-4|6-7]_max_alarm Output voltage low alarm 79in[3-4|6-7]_max Maximum output voltage 80in[3-4|6-7]_max_alarm Output voltage high alarm 81in[3-4|6-7]_crit Critical maximum output voltage 82in[3-4|6-7]_crit_alarm Output voltage critical high alarm 83 84power[1-2]_label "pout[1-2]" 85power[1-2]_input Measured output power 86 87temp1_input Measured temperature 88temp1_crit Critical high temperature 89temp1_crit_alarm Chip temperature critical high alarm 90temp1_max Maximum temperature 91temp1_max_alarm Chip temperature high alarm 92======================= ==================================== 93