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kernel
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hwmon
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lt3074.rst

lt3074.rst 2.1 KB
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  1. .. SPDX-License-Identifier: GPL-2.0
    2. 

  2. 

  3. Kernel driver lt3074
    4. 

  4. ====================
    5. 

  5. 

  6. Supported chips:
    7. 

  7. 

  8.   * Analog Devices LT3074
    9. 

  9. 

  10.     Prefix: 'lt3074'
    11. 

  11. 

  12.     Addresses scanned: -
    13. 

  13. 

  14.     Datasheet: https://www.analog.com/en/products/lt3074.html
    15. 

  15. 

  16. Authors: Cedric Encarnacion <cedricjustine.encarnacion@analog.com>
    17. 

  17. 

  18. 

  19. Description
    20. 

  20. -----------
    21. 

  21. 

  22. This driver supports hardware monitoring for Analog Devices LT3074 Linear
    23. 

  23. Regulator with PMBus interface.
    24. 

  24. 

  25. The LT3074 is a low voltage, ultra-low noise and ultra-fast transient
    26. 

  26. response linear regulator with PMBus serial interface. PMBus telemetry
    27. 

  27. feature provides information regarding the output voltage and current,
    28. 

  28. input voltage, bias voltage and die temperature.
    29. 

  29. 

  30. The driver is a client driver to the core PMBus driver. Please see
    31. 

  31. Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
    32. 

  32. 

  33. Usage Notes
    34. 

  34. -----------
    35. 

  35. 

  36. This driver does not auto-detect devices. You will have to instantiate
    37. 

  37. the devices explicitly. Please see Documentation/i2c/instantiating-devices.rst
    38. 

  38. for details.
    39. 

  39. 

  40. Platform data support
    41. 

  41. ---------------------
    42. 

  42. 

  43. The driver supports standard PMBus driver platform data.
    44. 

  44. 

  45. Sysfs entries
    46. 

  46. -------------
    47. 

  47. 

  48. ======================= =======================================================
    49. 

  49. in1_label		"vin"
    50. 

  50. in1_input		Measured input voltage
    51. 

  51. in1_max			Input overvoltage warning limit
    52. 

  52. in1_max_alarm		Input overvoltage warning status
    53. 

  53. in1_min			Input undervoltage warning limit
    54. 

  54. in1_min_alarm		Input undervoltage warning status
    55. 

  55. in2_label		"vmon"
    56. 

  56. in2_input		Measured bias voltage
    57. 

  57. in2_max			Bias overvoltage warning limit
    58. 

  58. in2_min			Bias undervoltage warning limit
    59. 

  59. in3_label		"vout1"
    60. 

  60. in3_input		Measured output voltage
    61. 

  61. in3_max			Output overvoltage warning limit
    62. 

  62. in3_max_alarm		Output overvoltage warning status
    63. 

  63. in3_min			Output undervoltage warning limit
    64. 

  64. in3_min_alarm		Output undervoltage warning status
    65. 

  65. curr1_label		"iout1"
    66. 

  66. curr1_input		Measured output current.
    67. 

  67. curr1_crit		Output overcurrent fault limit
    68. 

  68. curr1_crit_alarm	Output overcurrent fault status
    69. 

  69. temp1_input		Measured temperature
    70. 

  70. temp1_max		Maximum temperature limit
    71. 

  71. temp1_max_alarm		Overtemperature warning status
    72. 

  72. ======================= =======================================================
    73.