17ebd8b66SMauro Carvalho ChehabKernel driver tps40422 27ebd8b66SMauro Carvalho Chehab====================== 37ebd8b66SMauro Carvalho Chehab 47ebd8b66SMauro Carvalho ChehabSupported chips: 57ebd8b66SMauro Carvalho Chehab 67ebd8b66SMauro Carvalho Chehab * TI TPS40422 77ebd8b66SMauro Carvalho Chehab 87ebd8b66SMauro Carvalho Chehab Prefix: 'tps40422' 97ebd8b66SMauro Carvalho Chehab 107ebd8b66SMauro Carvalho Chehab Addresses scanned: - 117ebd8b66SMauro Carvalho Chehab 12*f12d634fSAlexander A. Klimov Datasheet: https://www.ti.com/lit/gpn/tps40422 137ebd8b66SMauro Carvalho Chehab 147ebd8b66SMauro Carvalho ChehabAuthor: Zhu Laiwen <richard.zhu@nsn.com> 157ebd8b66SMauro Carvalho Chehab 167ebd8b66SMauro Carvalho Chehab 177ebd8b66SMauro Carvalho ChehabDescription 187ebd8b66SMauro Carvalho Chehab----------- 197ebd8b66SMauro Carvalho Chehab 207ebd8b66SMauro Carvalho ChehabThis driver supports TI TPS40422 Dual-Output or Two-Phase Synchronous Buck 217ebd8b66SMauro Carvalho ChehabController with PMBus 227ebd8b66SMauro Carvalho Chehab 237ebd8b66SMauro Carvalho ChehabThe driver is a client driver to the core PMBus driver. 247ebd8b66SMauro Carvalho ChehabPlease see Documentation/hwmon/pmbus.rst for details on PMBus client drivers. 257ebd8b66SMauro Carvalho Chehab 267ebd8b66SMauro Carvalho Chehab 277ebd8b66SMauro Carvalho ChehabUsage Notes 287ebd8b66SMauro Carvalho Chehab----------- 297ebd8b66SMauro Carvalho Chehab 307ebd8b66SMauro Carvalho ChehabThis driver does not auto-detect devices. You will have to instantiate the 31ccf988b6SMauro Carvalho Chehabdevices explicitly. Please see Documentation/i2c/instantiating-devices.rst for 327ebd8b66SMauro Carvalho Chehabdetails. 337ebd8b66SMauro Carvalho Chehab 347ebd8b66SMauro Carvalho Chehab 357ebd8b66SMauro Carvalho ChehabPlatform data support 367ebd8b66SMauro Carvalho Chehab--------------------- 377ebd8b66SMauro Carvalho Chehab 387ebd8b66SMauro Carvalho ChehabThe driver supports standard PMBus driver platform data. 397ebd8b66SMauro Carvalho Chehab 407ebd8b66SMauro Carvalho Chehab 417ebd8b66SMauro Carvalho ChehabSysfs entries 427ebd8b66SMauro Carvalho Chehab------------- 437ebd8b66SMauro Carvalho Chehab 447ebd8b66SMauro Carvalho ChehabThe following attributes are supported. 457ebd8b66SMauro Carvalho Chehab 467ebd8b66SMauro Carvalho Chehab======================= ======================================================= 477ebd8b66SMauro Carvalho Chehabin[1-2]_label "vout[1-2]" 487ebd8b66SMauro Carvalho Chehabin[1-2]_input Measured voltage. From READ_VOUT register. 497ebd8b66SMauro Carvalho Chehabin[1-2]_alarm voltage alarm. 507ebd8b66SMauro Carvalho Chehab 517ebd8b66SMauro Carvalho Chehabcurr[1-2]_input Measured current. From READ_IOUT register. 527ebd8b66SMauro Carvalho Chehabcurr[1-2]_label "iout[1-2]" 537ebd8b66SMauro Carvalho Chehabcurr1_max Maximum current. From IOUT_OC_WARN_LIMIT register. 547ebd8b66SMauro Carvalho Chehabcurr1_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT 557ebd8b66SMauro Carvalho Chehab register. 567ebd8b66SMauro Carvalho Chehabcurr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT status. 577ebd8b66SMauro Carvalho Chehabcurr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. 587ebd8b66SMauro Carvalho Chehabcurr2_alarm Current high alarm. From IOUT_OC_WARNING status. 597ebd8b66SMauro Carvalho Chehab 607ebd8b66SMauro Carvalho Chehabtemp1_input Measured temperature. From READ_TEMPERATURE_2 register 617ebd8b66SMauro Carvalho Chehab on page 0. 627ebd8b66SMauro Carvalho Chehabtemp1_max Maximum temperature. From OT_WARN_LIMIT register. 637ebd8b66SMauro Carvalho Chehabtemp1_crit Critical high temperature. From OT_FAULT_LIMIT register. 647ebd8b66SMauro Carvalho Chehabtemp1_max_alarm Chip temperature high alarm. Set by comparing 657ebd8b66SMauro Carvalho Chehab READ_TEMPERATURE_2 on page 0 with OT_WARN_LIMIT if 667ebd8b66SMauro Carvalho Chehab TEMP_OT_WARNING status is set. 677ebd8b66SMauro Carvalho Chehabtemp1_crit_alarm Chip temperature critical high alarm. Set by comparing 687ebd8b66SMauro Carvalho Chehab READ_TEMPERATURE_2 on page 0 with OT_FAULT_LIMIT if 697ebd8b66SMauro Carvalho Chehab TEMP_OT_FAULT status is set. 707ebd8b66SMauro Carvalho Chehabtemp2_input Measured temperature. From READ_TEMPERATURE_2 register 717ebd8b66SMauro Carvalho Chehab on page 1. 727ebd8b66SMauro Carvalho Chehabtemp2_alarm Chip temperature alarm on page 1. 737ebd8b66SMauro Carvalho Chehab======================= ======================================================= 74