| 1 | =======================================
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| 2 | Kernel driver for Mellanox systems LEDs
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| 3 | =======================================
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| 4 |
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| 5 | Provide system LED support for the nex Mellanox systems:
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| 6 | "msx6710", "msx6720", "msb7700", "msn2700", "msx1410",
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| 7 | "msn2410", "msb7800", "msn2740", "msn2100".
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| 8 |
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| 9 | Description
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| 10 | -----------
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| 11 | Driver provides the following LEDs for the systems "msx6710", "msx6720",
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| 12 | "msb7700", "msn2700", "msx1410", "msn2410", "msb7800", "msn2740":
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| 13 |
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| 14 | - mlxcpld:fan1:green
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| 15 | - mlxcpld:fan1:red
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| 16 | - mlxcpld:fan2:green
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| 17 | - mlxcpld:fan2:red
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| 18 | - mlxcpld:fan3:green
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| 19 | - mlxcpld:fan3:red
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| 20 | - mlxcpld:fan4:green
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| 21 | - mlxcpld:fan4:red
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| 22 | - mlxcpld:psu:green
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| 23 | - mlxcpld:psu:red
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| 24 | - mlxcpld:status:green
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| 25 | - mlxcpld:status:red
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| 26 |
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| 27 | "status"
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| 28 | - CPLD reg offset: 0x20
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| 29 | - Bits [3:0]
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| 30 |
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| 31 | "psu"
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| 32 | - CPLD reg offset: 0x20
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| 33 | - Bits [7:4]
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| 34 |
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| 35 | "fan1"
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| 36 | - CPLD reg offset: 0x21
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| 37 | - Bits [3:0]
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| 38 |
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| 39 | "fan2"
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| 40 | - CPLD reg offset: 0x21
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| 41 | - Bits [7:4]
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| 42 |
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| 43 | "fan3"
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| 44 | - CPLD reg offset: 0x22
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| 45 | - Bits [3:0]
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| 46 |
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| 47 | "fan4"
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| 48 | - CPLD reg offset: 0x22
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| 49 | - Bits [7:4]
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| 50 |
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| 51 | Color mask for all the above LEDs:
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| 52 |
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| 53 | [bit3,bit2,bit1,bit0] or
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| 54 | [bit7,bit6,bit5,bit4]:
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| 55 |
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| 56 | - [0,0,0,0] = LED OFF
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| 57 | - [0,1,0,1] = Red static ON
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| 58 | - [1,1,0,1] = Green static ON
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| 59 | - [0,1,1,0] = Red blink 3Hz
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| 60 | - [1,1,1,0] = Green blink 3Hz
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| 61 | - [0,1,1,1] = Red blink 6Hz
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| 62 | - [1,1,1,1] = Green blink 6Hz
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| 63 |
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| 64 | Driver provides the following LEDs for the system "msn2100":
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| 65 |
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| 66 | - mlxcpld:fan:green
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| 67 | - mlxcpld:fan:red
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| 68 | - mlxcpld:psu1:green
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| 69 | - mlxcpld:psu1:red
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| 70 | - mlxcpld:psu2:green
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| 71 | - mlxcpld:psu2:red
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| 72 | - mlxcpld:status:green
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| 73 | - mlxcpld:status:red
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| 74 | - mlxcpld:uid:blue
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| 75 |
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| 76 | "status"
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| 77 | - CPLD reg offset: 0x20
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| 78 | - Bits [3:0]
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| 79 |
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| 80 | "fan"
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| 81 | - CPLD reg offset: 0x21
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| 82 | - Bits [3:0]
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| 83 |
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| 84 | "psu1"
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| 85 | - CPLD reg offset: 0x23
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| 86 | - Bits [3:0]
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| 87 |
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| 88 | "psu2"
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| 89 | - CPLD reg offset: 0x23
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| 90 | - Bits [7:4]
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| 91 |
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| 92 | "uid"
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| 93 | - CPLD reg offset: 0x24
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| 94 | - Bits [3:0]
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| 95 |
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| 96 | Color mask for all the above LEDs, excepted uid:
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| 97 |
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| 98 | [bit3,bit2,bit1,bit0] or
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| 99 | [bit7,bit6,bit5,bit4]:
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| 100 |
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| 101 | - [0,0,0,0] = LED OFF
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| 102 | - [0,1,0,1] = Red static ON
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| 103 | - [1,1,0,1] = Green static ON
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| 104 | - [0,1,1,0] = Red blink 3Hz
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| 105 | - [1,1,1,0] = Green blink 3Hz
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| 106 | - [0,1,1,1] = Red blink 6Hz
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| 107 | - [1,1,1,1] = Green blink 6Hz
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| 108 |
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| 109 | Color mask for uid LED:
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| 110 | [bit3,bit2,bit1,bit0]:
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| 111 |
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| 112 | - [0,0,0,0] = LED OFF
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| 113 | - [1,1,0,1] = Blue static ON
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| 114 | - [1,1,1,0] = Blue blink 3Hz
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| 115 | - [1,1,1,1] = Blue blink 6Hz
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| 116 |
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| 117 | Driver supports HW blinking at 3Hz and 6Hz frequency (50% duty cycle).
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| 118 | For 3Hz duty cycle is about 167 msec, for 6Hz is about 83 msec.
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