1 .. SPDX-License-Identifier: GPL-2.0 1 .. SPDX-License-Identifier: GPL-2.0
2 2
3 Kernel driver xdpe122 3 Kernel driver xdpe122
4 ===================== 4 =====================
5 5
6 Supported chips: 6 Supported chips:
7 7
8 * Infineon XDPE11280 <<
9 <<
10 Prefix: 'xdpe11280' <<
11 <<
12 * Infineon XDPE12254 8 * Infineon XDPE12254
13 9
14 Prefix: 'xdpe12254' 10 Prefix: 'xdpe12254'
15 11
16 * Infineon XDPE12284 12 * Infineon XDPE12284
17 13
18 Prefix: 'xdpe12284' 14 Prefix: 'xdpe12284'
19 15
20 Authors: 16 Authors:
21 17
22 Vadim Pasternak <vadimp@mellanox.com> 18 Vadim Pasternak <vadimp@mellanox.com>
23 19
24 Description 20 Description
25 ----------- 21 -----------
26 22
27 This driver implements support for Infineon Mu !! 23 This driver implements support for Infineon Multi-phase XDPE122 family
28 family dual loop voltage regulators. !! 24 dual loop voltage regulators.
29 These families include XDPE11280, XDPE12284 an !! 25 The family includes XDPE12284 and XDPE12254 devices.
30 The devices from this family compliant with: !! 26 The devices from this family complaint with:
31 27
32 - Intel VR13 and VR13HC rev 1.3, IMVP8 rev 1.2 28 - Intel VR13 and VR13HC rev 1.3, IMVP8 rev 1.2 and IMPVP9 rev 1.3 DC-DC
33 converter specification. 29 converter specification.
34 - Intel SVID rev 1.9. protocol. 30 - Intel SVID rev 1.9. protocol.
35 - PMBus rev 1.3 interface. 31 - PMBus rev 1.3 interface.
36 32
37 Devices support linear format for reading inpu 33 Devices support linear format for reading input voltage, input and output current,
38 input and output power and temperature. 34 input and output power and temperature.
39 Device supports VID format for reading output 35 Device supports VID format for reading output voltage. The below modes are
40 supported: 36 supported:
41 - VR12.0 mode, 5-mV DAC - 0x01. 37 - VR12.0 mode, 5-mV DAC - 0x01.
42 - VR12.5 mode, 10-mV DAC - 0x02. 38 - VR12.5 mode, 10-mV DAC - 0x02.
43 - IMVP9 mode, 5-mV DAC - 0x03. 39 - IMVP9 mode, 5-mV DAC - 0x03.
44 - AMD mode 6.25mV - 0x10. 40 - AMD mode 6.25mV - 0x10.
45 41
46 Devices support two pages for telemetry. 42 Devices support two pages for telemetry.
47 43
48 The driver provides for current: input, maximu 44 The driver provides for current: input, maximum and critical thresholds
49 and maximum and critical alarms. Critical thre 45 and maximum and critical alarms. Critical thresholds and critical alarm are
50 supported only for current output. 46 supported only for current output.
51 The driver exports the following attributes fo 47 The driver exports the following attributes for via the sysfs files, where
52 indexes 1, 2 are for "iin" and 3, 4 for "iout" 48 indexes 1, 2 are for "iin" and 3, 4 for "iout":
53 49
54 **curr[3-4]_crit** 50 **curr[3-4]_crit**
55 51
56 **curr[3-4]_crit_alarm** 52 **curr[3-4]_crit_alarm**
57 53
58 **curr[1-4]_input** 54 **curr[1-4]_input**
59 55
60 **curr[1-4]_label** 56 **curr[1-4]_label**
61 57
62 **curr[1-4]_max** 58 **curr[1-4]_max**
63 59
64 **curr[1-4]_max_alarm** 60 **curr[1-4]_max_alarm**
65 61
66 The driver provides for voltage: input, critic 62 The driver provides for voltage: input, critical and low critical thresholds
67 and critical and low critical alarms. 63 and critical and low critical alarms.
68 The driver exports the following attributes fo 64 The driver exports the following attributes for via the sysfs files, where
69 indexes 1, 2 are for "vin" and 3, 4 for "vout" 65 indexes 1, 2 are for "vin" and 3, 4 for "vout":
70 66
71 **in[1-4]_crit** 67 **in[1-4]_crit**
72 68
73 **in[1-4_crit_alarm** 69 **in[1-4_crit_alarm**
74 70
75 **in[1-4]_input** 71 **in[1-4]_input**
76 72
77 **in[1-4_label** 73 **in[1-4_label**
78 74
79 **in[1-4]_lcrit** 75 **in[1-4]_lcrit**
80 76
81 **in[1-41_lcrit_alarm** 77 **in[1-41_lcrit_alarm**
82 78
83 The driver provides for power: input and alarm 79 The driver provides for power: input and alarms. Power alarm is supported only
84 for power input. 80 for power input.
85 The driver exports the following attributes fo 81 The driver exports the following attributes for via the sysfs files, where
86 indexes 1, 2 are for "pin" and 3, 4 for "pout" 82 indexes 1, 2 are for "pin" and 3, 4 for "pout":
87 83
88 **power[1-2]_alarm** 84 **power[1-2]_alarm**
89 85
90 **power[1-4]_input** 86 **power[1-4]_input**
91 87
92 **power[1-4]_label** 88 **power[1-4]_label**
93 89
94 The driver provides for temperature: input, ma 90 The driver provides for temperature: input, maximum and critical thresholds
95 and maximum and critical alarms. 91 and maximum and critical alarms.
96 The driver exports the following attributes fo 92 The driver exports the following attributes for via the sysfs files:
97 93
98 **temp[1-2]_crit** 94 **temp[1-2]_crit**
99 95
100 **temp[1-2]_crit_alarm** 96 **temp[1-2]_crit_alarm**
101 97
102 **temp[1-2]_input** 98 **temp[1-2]_input**
103 99
104 **temp[1-2]_max** 100 **temp[1-2]_max**
105 101
106 **temp[1-2]_max_alarm** 102 **temp[1-2]_max_alarm**
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