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leds-mlxcpld.txt

leds-mlxcpld.txt 2.2 KB
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  1. Kernel driver for Mellanox systems LEDs
    2. 

  2. =======================================
    3. 

  3. 

  4. Provide system LED support for the nex Mellanox systems:
    5. 

  5. "msx6710", "msx6720", "msb7700", "msn2700", "msx1410",
    6. 

  6. "msn2410", "msb7800", "msn2740", "msn2100".
    7. 

  7. 

  8. Description
    9. 

  9. -----------
    10. 

  10. Driver provides the following LEDs for the systems "msx6710", "msx6720",
    11. 

  11. "msb7700", "msn2700", "msx1410", "msn2410", "msb7800", "msn2740":
    12. 

  12.   mlxcpld:fan1:green
    13. 

  13.   mlxcpld:fan1:red
    14. 

  14.   mlxcpld:fan2:green
    15. 

  15.   mlxcpld:fan2:red
    16. 

  16.   mlxcpld:fan3:green
    17. 

  17.   mlxcpld:fan3:red
    18. 

  18.   mlxcpld:fan4:green
    19. 

  19.   mlxcpld:fan4:red
    20. 

  20.   mlxcpld:psu:green
    21. 

  21.   mlxcpld:psu:red
    22. 

  22.   mlxcpld:status:green
    23. 

  23.   mlxcpld:status:red
    24. 

  24. 

  25.  "status"
    26. 

  26.   CPLD reg offset: 0x20
    27. 

  27.   Bits [3:0]
    28. 

  28. 

  29.  "psu"
    30. 

  30.   CPLD reg offset: 0x20
    31. 

  31.   Bits [7:4]
    32. 

  32. 

  33.  "fan1"
    34. 

  34.   CPLD reg offset: 0x21
    35. 

  35.   Bits [3:0]
    36. 

  36. 

  37.  "fan2"
    38. 

  38.   CPLD reg offset: 0x21
    39. 

  39.   Bits [7:4]
    40. 

  40. 

  41.  "fan3"
    42. 

  42.   CPLD reg offset: 0x22
    43. 

  43.   Bits [3:0]
    44. 

  44. 

  45.  "fan4"
    46. 

  46.   CPLD reg offset: 0x22
    47. 

  47.   Bits [7:4]
    48. 

  48. 

  49.  Color mask for all the above LEDs:
    50. 

  50.   [bit3,bit2,bit1,bit0] or
    51. 

  51.   [bit7,bit6,bit5,bit4]:
    52. 

  52. 	[0,0,0,0] = LED OFF
    53. 

  53. 	[0,1,0,1] = Red static ON
    54. 

  54. 	[1,1,0,1] = Green static ON
    55. 

  55. 	[0,1,1,0] = Red blink 3Hz
    56. 

  56. 	[1,1,1,0] = Green blink 3Hz
    57. 

  57. 	[0,1,1,1] = Red blink 6Hz
    58. 

  58. 	[1,1,1,1] = Green blink 6Hz
    59. 

  59. 

  60. Driver provides the following LEDs for the system "msn2100":
    61. 

  61.   mlxcpld:fan:green
    62. 

  62.   mlxcpld:fan:red
    63. 

  63.   mlxcpld:psu1:green
    64. 

  64.   mlxcpld:psu1:red
    65. 

  65.   mlxcpld:psu2:green
    66. 

  66.   mlxcpld:psu2:red
    67. 

  67.   mlxcpld:status:green
    68. 

  68.   mlxcpld:status:red
    69. 

  69.   mlxcpld:uid:blue
    70. 

  70. 

  71.  "status"
    72. 

  72.   CPLD reg offset: 0x20
    73. 

  73.   Bits [3:0]
    74. 

  74. 

  75.  "fan"
    76. 

  76.   CPLD reg offset: 0x21
    77. 

  77.   Bits [3:0]
    78. 

  78. 

  79.  "psu1"
    80. 

  80.   CPLD reg offset: 0x23
    81. 

  81.   Bits [3:0]
    82. 

  82. 

  83.  "psu2"
    84. 

  84.   CPLD reg offset: 0x23
    85. 

  85.   Bits [7:4]
    86. 

  86. 

  87.  "uid"
    88. 

  88.   CPLD reg offset: 0x24
    89. 

  89.   Bits [3:0]
    90. 

  90. 

  91.  Color mask for all the above LEDs, excepted uid:
    92. 

  92.   [bit3,bit2,bit1,bit0] or
    93. 

  93.   [bit7,bit6,bit5,bit4]:
    94. 

  94. 	[0,0,0,0] = LED OFF
    95. 

  95. 	[0,1,0,1] = Red static ON
    96. 

  96. 	[1,1,0,1] = Green static ON
    97. 

  97. 	[0,1,1,0] = Red blink 3Hz
    98. 

  98. 	[1,1,1,0] = Green blink 3Hz
    99. 

  99. 	[0,1,1,1] = Red blink 6Hz
    100. 

  100. 	[1,1,1,1] = Green blink 6Hz
    101. 

  101. 

  102.  Color mask for uid LED:
    103. 

  103.   [bit3,bit2,bit1,bit0]:
    104. 

  104. 	[0,0,0,0] = LED OFF
    105. 

  105. 	[1,1,0,1] = Blue static ON
    106. 

  106. 	[1,1,1,0] = Blue blink 3Hz
    107. 

  107. 	[1,1,1,1] = Blue blink 6Hz
    108. 

  108. 

  109. Driver supports HW blinking at 3Hz and 6Hz frequency (50% duty cycle).
    110. 

  110. For 3Hz duty cylce is about 167 msec, for 6Hz is about 83 msec.
    111. 

  111.