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