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Documentation / leds / leds-mlxcpld.txt


Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.

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