1 .. SPDX-License-Identifier: GPL-2.0-only
2
3 Kernel driver Ampere(R)'s Altra(R) SMpro hwmon
4 ==============================================
5
6 Supported chips:
7
8 * Ampere(R) Altra(R)
9
10 Prefix: ``smpro``
11
12 Reference: `Altra SoC BMC Interface Specif
13
14 Author: Thu Nguyen <thu@os.amperecomputing.com>
15
16 Description
17 -----------
18 The smpro-hwmon driver supports hardware monit
19 SoCs based on the SMpro co-processor (SMpro).
20 are supported by the driver:
21
22 * temperature
23 * voltage
24 * current
25 * power
26
27 The interface provides the registers to query
28 their values which are then exported to usersp
29
30 Usage Notes
31 -----------
32
33 The driver creates at least two sysfs files fo
34
35 * ``<sensor_type><idx>_label`` reports the sen
36 * ``<sensor_type><idx>_input`` returns the sen
37
38 The sysfs files are allocated in the SMpro roo
39 directory for each instance.
40
41 When the SoC is turned off, the driver will fa
42 return ``-ENXIO``.
43
44 Sysfs entries
45 -------------
46
47 The following sysfs files are supported:
48
49 * Ampere(R) Altra(R):
50
51 ============ ============= ====== =====
52 Name Unit Perm Descr
53 ============ ============= ====== =====
54 temp1_input millicelsius RO SoC t
55 temp2_input millicelsius RO Max t
56 temp2_crit millicelsius RO SoC V
57 temp3_input millicelsius RO Max t
58 temp4_input millicelsius RO Max t
59 temp5_input millicelsius RO Tempe
60 temp5_crit millicelsius RO MEM H
61 temp6_input millicelsius RO Tempe
62 temp6_crit millicelsius RO MEM H
63 temp7_input millicelsius RO Tempe
64 temp7_crit millicelsius RO MEM H
65 temp8_input millicelsius RO Tempe
66 temp8_crit millicelsius RO MEM H
67 temp9_input millicelsius RO Tempe
68 temp9_crit millicelsius RO MEM H
69 temp10_input millicelsius RO Tempe
70 temp10_crit millicelsius RO MEM H
71 temp11_input millicelsius RO Tempe
72 temp11_crit millicelsius RO MEM H
73 temp12_input millicelsius RO Tempe
74 temp12_crit millicelsius RO MEM H
75 temp13_input millicelsius RO Max t
76 in0_input millivolts RO Core
77 in1_input millivolts RO SoC v
78 in2_input millivolts RO DIMM
79 in3_input millivolts RO DIMM
80 in4_input millivolts RO RCA V
81 cur1_input milliamperes RO Core
82 cur2_input milliamperes RO SoC V
83 cur3_input milliamperes RO DIMM
84 cur4_input milliamperes RO DIMM
85 cur5_input milliamperes RO RCA V
86 power1_input microwatts RO Core
87 power2_input microwatts RO SoC V
88 power3_input microwatts RO DIMM
89 power4_input microwatts RO DIMM
90 power5_input microwatts RO RCA V
91 ============ ============= ====== =====
92
93 Example::
94
95 # cat in0_input
96 830
97 # cat temp1_input
98 37000
99 # cat curr1_input
100 9000
101 # cat power5_input
102 19500000
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