1Kernel driver tps40422 2====================== 3 4Supported chips: 5 6 * TI TPS40422 7 8 Prefix: 'tps40422' 9 10 Addresses scanned: - 11 12 Datasheet: http://www.ti.com/lit/gpn/tps40422 13 14Author: Zhu Laiwen <richard.zhu@nsn.com> 15 16 17Description 18----------- 19 20This driver supports TI TPS40422 Dual-Output or Two-Phase Synchronous Buck 21Controller with PMBus 22 23The driver is a client driver to the core PMBus driver. 24Please see Documentation/hwmon/pmbus.rst for details on PMBus client drivers. 25 26 27Usage Notes 28----------- 29 30This driver does not auto-detect devices. You will have to instantiate the 31devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for 32details. 33 34 35Platform data support 36--------------------- 37 38The driver supports standard PMBus driver platform data. 39 40 41Sysfs entries 42------------- 43 44The following attributes are supported. 45 46======================= ======================================================= 47in[1-2]_label "vout[1-2]" 48in[1-2]_input Measured voltage. From READ_VOUT register. 49in[1-2]_alarm voltage alarm. 50 51curr[1-2]_input Measured current. From READ_IOUT register. 52curr[1-2]_label "iout[1-2]" 53curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register. 54curr1_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT 55 register. 56curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT status. 57curr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. 58curr2_alarm Current high alarm. From IOUT_OC_WARNING status. 59 60temp1_input Measured temperature. From READ_TEMPERATURE_2 register 61 on page 0. 62temp1_max Maximum temperature. From OT_WARN_LIMIT register. 63temp1_crit Critical high temperature. From OT_FAULT_LIMIT register. 64temp1_max_alarm Chip temperature high alarm. Set by comparing 65 READ_TEMPERATURE_2 on page 0 with OT_WARN_LIMIT if 66 TEMP_OT_WARNING status is set. 67temp1_crit_alarm Chip temperature critical high alarm. Set by comparing 68 READ_TEMPERATURE_2 on page 0 with OT_FAULT_LIMIT if 69 TEMP_OT_FAULT status is set. 70temp2_input Measured temperature. From READ_TEMPERATURE_2 register 71 on page 1. 72temp2_alarm Chip temperature alarm on page 1. 73======================= ======================================================= 74