1 What: /sys/devices/platform/mlxplat/ 1 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic_health
2 Date: June 2018 2 Date: June 2018
3 KernelVersion: 4.19 3 KernelVersion: 4.19
4 Contact: Vadim Pasternak <vadimp@nvidia. 4 Contact: Vadim Pasternak <vadimp@nvidia.com>
5 Description: This file shows ASIC health st 5 Description: This file shows ASIC health status. The possible values are:
6 0 - health failed, 2 - health 6 0 - health failed, 2 - health OK, 3 - ASIC in booting state.
7 7
8 The files are read only. 8 The files are read only.
9 9
10 What: /sys/devices/platform/mlxplat/ 10 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld1_version
11 What: /sys/devices/platform/mlxplat/ 11 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld2_version
12 Date: June 2018 12 Date: June 2018
13 KernelVersion: 4.19 13 KernelVersion: 4.19
14 Contact: Vadim Pasternak <vadimp@nvidia. 14 Contact: Vadim Pasternak <vadimp@nvidia.com>
15 Description: These files show with which CP 15 Description: These files show with which CPLD versions have been burned
16 on carrier and switch boards. 16 on carrier and switch boards.
17 17
18 The files are read only. 18 The files are read only.
19 19
20 What: /sys/devices/platform/mlxplat/ 20 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/fan_dir
21 Date: December 2018 21 Date: December 2018
22 KernelVersion: 5.0 22 KernelVersion: 5.0
23 Contact: Vadim Pasternak <vadimp@nvidia. 23 Contact: Vadim Pasternak <vadimp@nvidia.com>
24 Description: This file shows the system fan 24 Description: This file shows the system fans direction:
25 forward direction - relevant b 25 forward direction - relevant bit is set 0;
26 reversed direction - relevant 26 reversed direction - relevant bit is set 1.
27 27
28 The files are read only. 28 The files are read only.
29 29
30 What: /sys/devices/platform/mlxplat/ 30 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld3_version
31 Date: November 2018 31 Date: November 2018
32 KernelVersion: 5.0 32 KernelVersion: 5.0
33 Contact: Vadim Pasternak <vadimp@nvidia. 33 Contact: Vadim Pasternak <vadimp@nvidia.com>
34 Description: These files show with which CP 34 Description: These files show with which CPLD versions have been burned
35 on LED or Gearbox board. 35 on LED or Gearbox board.
36 36
37 The files are read only. 37 The files are read only.
38 38
39 What: /sys/devices/platform/mlxplat/ 39 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/jtag_enable
40 Date: November 2018 40 Date: November 2018
41 KernelVersion: 5.0 41 KernelVersion: 5.0
42 Contact: Vadim Pasternak <vadimp@nvidia. 42 Contact: Vadim Pasternak <vadimp@nvidia.com>
43 Description: These files enable and disable 43 Description: These files enable and disable the access to the JTAG domain.
44 By default access to the JTAG 44 By default access to the JTAG domain is disabled.
45 45
46 The file is read/write. 46 The file is read/write.
47 47
48 What: /sys/devices/platform/mlxplat/ 48 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/select_iio
49 Date: June 2018 49 Date: June 2018
50 KernelVersion: 4.19 50 KernelVersion: 4.19
51 Contact: Vadim Pasternak <vadimp@nvidia. 51 Contact: Vadim Pasternak <vadimp@nvidia.com>
52 Description: This file allows iio devices s 52 Description: This file allows iio devices selection.
53 53
54 Attribute select_iio can be wr 54 Attribute select_iio can be written with 0 or with 1. It
55 selects which one of iio devic 55 selects which one of iio devices can be accessed.
56 56
57 The file is read/write. 57 The file is read/write.
58 58
59 What: /sys/devices/platform/mlxplat/ 59 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/psu1_on
60 /sys/devices/platform/mlxplat/ 60 /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/psu2_on
61 /sys/devices/platform/mlxplat/ 61 /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pwr_cycle
62 /sys/devices/platform/mlxplat/ 62 /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pwr_down
63 Date: June 2018 63 Date: June 2018
64 KernelVersion: 4.19 64 KernelVersion: 4.19
65 Contact: Vadim Pasternak <vadimp@nvidia. 65 Contact: Vadim Pasternak <vadimp@nvidia.com>
66 Description: These files allow asserting sy 66 Description: These files allow asserting system power cycling, switching
67 power supply units on and off 67 power supply units on and off and system's main power domain
68 shutdown. 68 shutdown.
69 Expected behavior: 69 Expected behavior:
70 When pwr_cycle is written 1: a 70 When pwr_cycle is written 1: auxiliary power domain will go
71 down and after short period (a 71 down and after short period (about 1 second) up.
72 When psu1_on or psu2_on is wr 72 When psu1_on or psu2_on is written 1, related unit will be
73 disconnected from the power so 73 disconnected from the power source, when written 0 - connected.
74 If both are written 1 - power 74 If both are written 1 - power supplies main power domain will
75 go down. 75 go down.
76 When pwr_down is written 1, sy 76 When pwr_down is written 1, system's main power domain will go
77 down. 77 down.
78 78
79 The files are write only. 79 The files are write only.
80 80
81 What: /sys/devices/platform/mlxplat/ 81 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_aux_pwr_or_ref
82 What: /sys/devices/platform/mlxplat/ 82 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_asic_thermal
83 What: /sys/devices/platform/mlxplat/ 83 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_hotswap_or_halt
84 What: /sys/devices/platform/mlxplat/ 84 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_hotswap_or_wd
85 What: /sys/devices/platform/mlxplat/ 85 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_fw_reset
86 What: /sys/devices/platform/mlxplat/ 86 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_long_pb
87 What: /sys/devices/platform/mlxplat/ 87 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_main_pwr_fail
88 What: /sys/devices/platform/mlxplat/ 88 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_short_pb
89 What: /sys/devices/platform/mlxplat/ 89 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sw_reset
90 Date: June 2018 90 Date: June 2018
91 KernelVersion: 4.19 91 KernelVersion: 4.19
92 Contact: Vadim Pasternak <vadimp@nvidia. 92 Contact: Vadim Pasternak <vadimp@nvidia.com>
93 Description: These files show the system re 93 Description: These files show the system reset cause, as following: power
94 auxiliary outage or power refr 94 auxiliary outage or power refresh, ASIC thermal shutdown, halt,
95 hotswap, watchdog, firmware re 95 hotswap, watchdog, firmware reset, long press power button,
96 short press power button, soft 96 short press power button, software reset. Value 1 in file means
97 this is reset cause, 0 - other 97 this is reset cause, 0 - otherwise. Only one of the above
98 causes could be 1 at the same 98 causes could be 1 at the same time, representing only last
99 reset cause. 99 reset cause.
100 100
101 The files are read only. 101 The files are read only.
102 102
103 What: /sys/devices/platform/mlxplat/ 103 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_pwr_fail
104 What: /sys/devices/platform/mlxplat/ 104 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_from_comex
105 What: /sys/devices/platform/mlxplat/ 105 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_system
106 What: /sys/devices/platform/mlxplat/ 106 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_voltmon_upgrade_fail
107 Date: November 2018 107 Date: November 2018
108 KernelVersion: 5.0 108 KernelVersion: 5.0
109 Contact: Vadim Pasternak <vadimp@nvidia. 109 Contact: Vadim Pasternak <vadimp@nvidia.com>
110 Description: These files show the system re 110 Description: These files show the system reset cause, as following: ComEx
111 power fail, reset from ComEx, 111 power fail, reset from ComEx, system platform reset, reset
112 due to voltage monitor devices 112 due to voltage monitor devices upgrade failure,
113 Value 1 in file means this is 113 Value 1 in file means this is reset cause, 0 - otherwise.
114 Only one bit could be 1 at the 114 Only one bit could be 1 at the same time, representing only
115 the last reset cause. 115 the last reset cause.
116 116
117 The files are read only. 117 The files are read only.
118 118
119 What: /sys/devices/platform/mlxplat/ 119 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld4_version
120 Date: November 2018 120 Date: November 2018
121 KernelVersion: 5.0 121 KernelVersion: 5.0
122 Contact: Vadim Pasternak <vadimp@nvidia. 122 Contact: Vadim Pasternak <vadimp@nvidia.com>
123 Description: These files show with which CP 123 Description: These files show with which CPLD versions have been burned
124 on LED board. 124 on LED board.
125 125
126 The files are read only. 126 The files are read only.
127 127
128 What: /sys/devices/platform/mlxplat/ 128 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_thermal
129 What: /sys/devices/platform/mlxplat/ 129 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_wd
130 What: /sys/devices/platform/mlxplat/ 130 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_from_asic
131 What: /sys/devices/platform/mlxplat/ 131 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_reload_bios
132 What: /sys/devices/platform/mlxplat/ 132 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sff_wd
133 What: /sys/devices/platform/mlxplat/ 133 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_swb_wd
134 Date: June 2019 134 Date: June 2019
135 KernelVersion: 5.3 135 KernelVersion: 5.3
136 Contact: Vadim Pasternak <vadimp@nvidia. 136 Contact: Vadim Pasternak <vadimp@nvidia.com>
137 Description: These files show the system re 137 Description: These files show the system reset cause, as following:
138 COMEX thermal shutdown; wathch 138 COMEX thermal shutdown; wathchdog power off or reset was derived
139 by one of the next components: 139 by one of the next components: COMEX, switch board or by Small Form
140 Factor mezzanine, reset reques 140 Factor mezzanine, reset requested from ASIC, reset caused by BIOS
141 reload. Value 1 in file means 141 reload. Value 1 in file means this is reset cause, 0 - otherwise.
142 Only one of the above causes c 142 Only one of the above causes could be 1 at the same time, representing
143 only last reset cause. 143 only last reset cause.
144 144
145 The files are read only. 145 The files are read only.
146 146
147 What: /sys/devices/platform/mlxplat/ 147 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/config1
148 What: /sys/devices/platform/mlxplat/ 148 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/config2
149 Date: January 2020 149 Date: January 2020
150 KernelVersion: 5.6 150 KernelVersion: 5.6
151 Contact: Vadim Pasternak <vadimp@nvidia. 151 Contact: Vadim Pasternak <vadimp@nvidia.com>
152 Description: These files show system static 152 Description: These files show system static topology identification
153 like system's static I2C topol 153 like system's static I2C topology, number and type of FPGA
154 devices within the system and 154 devices within the system and so on.
155 155
156 The files are read only. 156 The files are read only.
157 157
158 What: /sys/devices/platform/mlxplat/ 158 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_ac_pwr_fail
159 What: /sys/devices/platform/mlxplat/ 159 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_platform
160 What: /sys/devices/platform/mlxplat/ 160 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_soc
161 What: /sys/devices/platform/mlxplat/ 161 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sw_pwr_off
162 Date: January 2020 162 Date: January 2020
163 KernelVersion: 5.6 163 KernelVersion: 5.6
164 Contact: Vadim Pasternak <vadimp@nvidia. 164 Contact: Vadim Pasternak <vadimp@nvidia.com>
165 Description: These files show the system re 165 Description: These files show the system reset causes, as following: reset
166 due to AC power failure, reset 166 due to AC power failure, reset invoked from software by
167 assertion reset signal through 167 assertion reset signal through CPLD. reset caused by signal
168 asserted by SOC through ACPI r 168 asserted by SOC through ACPI register, reset invoked from
169 software by assertion power of 169 software by assertion power off signal through CPLD.
170 170
171 The files are read only. 171 The files are read only.
172 172
173 What: /sys/devices/platform/mlxplat/ 173 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pcie_asic_reset_dis
174 Date: January 2020 174 Date: January 2020
175 KernelVersion: 5.6 175 KernelVersion: 5.6
176 Contact: Vadim Pasternak <vadimp@nvidia. 176 Contact: Vadim Pasternak <vadimp@nvidia.com>
177 Description: This file allows to retain ASI 177 Description: This file allows to retain ASIC up during PCIe root complex
178 reset, when attribute is set 1 178 reset, when attribute is set 1.
179 179
180 The file is read/write. 180 The file is read/write.
181 181
182 What: /sys/devices/platform/mlxplat/ 182 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/vpd_wp
183 Date: January 2020 183 Date: January 2020
184 KernelVersion: 5.6 184 KernelVersion: 5.6
185 Contact: Vadim Pasternak <vadimp@nvidia. 185 Contact: Vadim Pasternak <vadimp@nvidia.com>
186 Description: This file allows to overwrite 186 Description: This file allows to overwrite system VPD hardware write
187 protection when attribute is s 187 protection when attribute is set 1.
188 188
189 The file is read/write. 189 The file is read/write.
190 190
191 What: /sys/devices/platform/mlxplat/ 191 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/voltreg_update_status
192 Date: January 2020 192 Date: January 2020
193 KernelVersion: 5.6 193 KernelVersion: 5.6
194 Contact: Vadim Pasternak <vadimp@nvidia. 194 Contact: Vadim Pasternak <vadimp@nvidia.com>
195 Description: This file exposes the configur 195 Description: This file exposes the configuration update status of burnable
196 voltage regulator devices. The 196 voltage regulator devices. The status values are as following:
197 0 - OK; 1 - CRC failure; 2 = I 197 0 - OK; 1 - CRC failure; 2 = I2C failure; 3 - in progress.
198 198
199 The file is read only. 199 The file is read only.
200 200
201 What: /sys/devices/platform/mlxplat/ 201 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/ufm_version
202 Date: January 2020 202 Date: January 2020
203 KernelVersion: 5.6 203 KernelVersion: 5.6
204 Contact: Vadim Pasternak <vadimp@nvidia. 204 Contact: Vadim Pasternak <vadimp@nvidia.com>
205 Description: This file exposes the firmware 205 Description: This file exposes the firmware version of burnable voltage
206 regulator devices. 206 regulator devices.
207 207
208 The file is read only. 208 The file is read only.
209 209
210 What: /sys/devices/platform/mlxplat/ 210 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld1_pn
211 What: /sys/devices/platform/mlxplat/ 211 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld2_pn
212 What: /sys/devices/platform/mlxplat/ 212 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld3_pn
213 What: /sys/devices/platform/mlxplat/ 213 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld4_pn
214 What: /sys/devices/platform/mlxplat/ 214 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld1_version_min
215 What: /sys/devices/platform/mlxplat/ 215 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld2_version_min
216 What: /sys/devices/platform/mlxplat/ 216 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld3_version_min
217 What: /sys/devices/platform/mlxplat/ 217 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld4_version_min
218 Date: July 2020 218 Date: July 2020
219 KernelVersion: 5.9 219 KernelVersion: 5.9
220 Contact: Vadim Pasternak <vadimp@nvidia. 220 Contact: Vadim Pasternak <vadimp@nvidia.com>
221 Description: These files show with which CP 221 Description: These files show with which CPLD part numbers and minor
222 versions have been burned CPLD 222 versions have been burned CPLD devices equipped on a
223 system. 223 system.
224 224
225 The files are read only. 225 The files are read only.
226 226
227 What: /sys/devices/platform/mlxplat/ 227 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/bios_active_image
228 What: /sys/devices/platform/mlxplat/ 228 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/bios_auth_fail
229 What: /sys/devices/platform/mlxplat/ 229 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/bios_upgrade_fail
230 Date: October 2021 230 Date: October 2021
231 KernelVersion: 5.16 231 KernelVersion: 5.16
232 Contact: Vadim Pasternak <vadimp@nvidia. 232 Contact: Vadim Pasternak <vadimp@nvidia.com>
233 Description: The files represent BIOS statu 233 Description: The files represent BIOS statuses:
234 234
235 bios_active_image: location of 235 bios_active_image: location of current active BIOS image:
236 0: Top, 1: Bottom. 236 0: Top, 1: Bottom.
237 The reported value should corr 237 The reported value should correspond to value expected by OS
238 in case of BIOS safe mode is 0 238 in case of BIOS safe mode is 0. This bit is related to Intel
239 top-swap feature of DualBios o 239 top-swap feature of DualBios on the same flash.
240 240
241 bios_auth_fail: BIOS upgrade i 241 bios_auth_fail: BIOS upgrade is failed because provided BIOS
242 image is not signed correctly. 242 image is not signed correctly.
243 243
244 bios_upgrade_fail: BIOS upgrad 244 bios_upgrade_fail: BIOS upgrade is failed by some other
245 reason not because authenticat 245 reason not because authentication. For example due to
246 physical SPI flash problem. 246 physical SPI flash problem.
247 247
248 The files are read only. 248 The files are read only.
249 249
250 What: /sys/devices/platform/mlxplat/ 250 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc1_enable
251 What: /sys/devices/platform/mlxplat/ 251 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc2_enable
252 What: /sys/devices/platform/mlxplat/ 252 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc3_enable
253 What: /sys/devices/platform/mlxplat/ 253 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc4_enable
254 What: /sys/devices/platform/mlxplat/ 254 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc5_enable
255 What: /sys/devices/platform/mlxplat/ 255 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc6_enable
256 What: /sys/devices/platform/mlxplat/ 256 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc7_enable
257 What: /sys/devices/platform/mlxplat/ 257 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc8_enable
258 Date: October 2021 258 Date: October 2021
259 KernelVersion: 5.16 259 KernelVersion: 5.16
260 Contact: Vadim Pasternak <vadimp@nvidia. 260 Contact: Vadim Pasternak <vadimp@nvidia.com>
261 Description: These files allow line cards e 261 Description: These files allow line cards enable state control.
262 Expected behavior: 262 Expected behavior:
263 When lc{n}_enable is written 263 When lc{n}_enable is written 1, related line card is released
264 from the reset state, when 0 - 264 from the reset state, when 0 - is hold in reset state.
265 265
266 The files are read/write. 266 The files are read/write.
267 267
268 What: /sys/devices/platform/mlxplat/ 268 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc1_pwr
269 What: /sys/devices/platform/mlxplat/ 269 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc2_pwr
270 What: /sys/devices/platform/mlxplat/ 270 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc3_pwr
271 What: /sys/devices/platform/mlxplat/ 271 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc4_pwr
272 What: /sys/devices/platform/mlxplat/ 272 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc5_pwr
273 What: /sys/devices/platform/mlxplat/ 273 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc6_pwr
274 What: /sys/devices/platform/mlxplat/ 274 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc7_pwr
275 What: /sys/devices/platform/mlxplat/ 275 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc8_pwr
276 Date: October 2021 276 Date: October 2021
277 KernelVersion: 5.16 277 KernelVersion: 5.16
278 Contact: Vadim Pasternak <vadimp@nvidia. 278 Contact: Vadim Pasternak <vadimp@nvidia.com>
279 Description: These files switching line car 279 Description: These files switching line cards power on and off.
280 Expected behavior: 280 Expected behavior:
281 When lc{n}_pwr is written 1, 281 When lc{n}_pwr is written 1, related line card is powered
282 on, when written 0 - powered o 282 on, when written 0 - powered off.
283 283
284 The files are read/write. 284 The files are read/write.
285 285
286 What: /sys/devices/platform/mlxplat/ 286 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc1_rst_mask
287 What: /sys/devices/platform/mlxplat/ 287 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc2_rst_mask
288 What: /sys/devices/platform/mlxplat/ 288 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc3_rst_mask
289 What: /sys/devices/platform/mlxplat/ 289 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc4_rst_mask
290 What: /sys/devices/platform/mlxplat/ 290 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc5_rst_mask
291 What: /sys/devices/platform/mlxplat/ 291 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc6_rst_mask
292 What: /sys/devices/platform/mlxplat/ 292 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc7_rst_mask
293 What: /sys/devices/platform/mlxplat/ 293 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lc8_rst_mask
294 Date: October 2021 294 Date: October 2021
295 KernelVersion: 5.16 295 KernelVersion: 5.16
296 Contact: Vadim Pasternak <vadimp@nvidia. 296 Contact: Vadim Pasternak <vadimp@nvidia.com>
297 Description: These files clear line card re 297 Description: These files clear line card reset bit enforced by ASIC, when it
298 sets it due to some abnormal A 298 sets it due to some abnormal ASIC behavior.
299 Expected behavior: 299 Expected behavior:
300 When lc{n}_rst_mask is written 300 When lc{n}_rst_mask is written 1, related line card reset bit
301 is cleared, when written 0 - n 301 is cleared, when written 0 - no effect.
302 302
303 The files are write only. 303 The files are write only.
304 304
305 What: /sys/devices/platform/mlxplat/ 305 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/os_started
306 Date: October 2021 306 Date: October 2021
307 KernelVersion: 5.16 307 KernelVersion: 5.16
308 Contact: Vadim Pasternak <vadimp@nvidia. 308 Contact: Vadim Pasternak <vadimp@nvidia.com>
309 Description: This file, when written 1, ind 309 Description: This file, when written 1, indicates to programmable devices
310 that OS is taking control over 310 that OS is taking control over it.
311 311
312 The file is read/write. 312 The file is read/write.
313 313
314 What: /sys/devices/platform/mlxplat/ 314 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pm_mgmt_en
315 Date: October 2021 315 Date: October 2021
316 KernelVersion: 5.16 316 KernelVersion: 5.16
317 Contact: Vadim Pasternak <vadimp@nvidia. 317 Contact: Vadim Pasternak <vadimp@nvidia.com>
318 Description: This file assigns power manage 318 Description: This file assigns power management control ownership.
319 When power management control 319 When power management control is provided by hardware, hardware
320 will automatically power off o 320 will automatically power off one or more line previously
321 powered line cards in case sys 321 powered line cards in case system power budget is getting
322 insufficient. It could be in c 322 insufficient. It could be in case when some of power units lost
323 power good state. 323 power good state.
324 When pm_mgmt_en is written 1, 324 When pm_mgmt_en is written 1, power management control by
325 software is enabled, 0 - power 325 software is enabled, 0 - power management control by hardware.
326 Note that for any setting of p 326 Note that for any setting of pm_mgmt_en attribute hardware will
327 not allow to power on any new 327 not allow to power on any new line card in case system power
328 budget is insufficient. 328 budget is insufficient.
329 Same in case software will try 329 Same in case software will try to power on several line cards
330 at once - hardware will power 330 at once - hardware will power line cards while system has
331 enough power budget. 331 enough power budget.
332 Default is 0. 332 Default is 0.
333 333
334 The file is read/write. 334 The file is read/write.
335 335
336 What: /sys/devices/platform/mlxplat/ 336 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/psu3_on
337 What: /sys/devices/platform/mlxplat/ 337 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/psu4_on
338 Date: October 2021 338 Date: October 2021
339 KernelVersion: 5.16 339 KernelVersion: 5.16
340 Contact: Vadim Pasternak <vadimp@nvidia. 340 Contact: Vadim Pasternak <vadimp@nvidia.com>
341 Description: These files switching power su 341 Description: These files switching power supply units on and off.
342 Expected behavior: 342 Expected behavior:
343 When psu3_on or psu4_on is wr 343 When psu3_on or psu4_on is written 1, related unit will be
344 disconnected from the power so 344 disconnected from the power source, when written 0 - connected.
345 345
346 The files are write only. 346 The files are write only.
347 347
348 What: /sys/devices/platform/mlxplat/ 348 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/shutdown_unlock
349 Date: October 2021 349 Date: October 2021
350 KernelVersion: 5.16 350 KernelVersion: 5.16
351 Contact: Vadim Pasternak <vadimp@nvidia. 351 Contact: Vadim Pasternak <vadimp@nvidia.com>
352 Description: This file allows to unlock ASI 352 Description: This file allows to unlock ASIC after thermal shutdown event.
353 When system thermal shutdown i 353 When system thermal shutdown is enforced by ASIC, ASIC is
354 getting locked and after syste 354 getting locked and after system boot it will not be available.
355 Software can decide to unlock 355 Software can decide to unlock it by setting this attribute to
356 1 and then perform system powe 356 1 and then perform system power cycle by setting pwr_cycle
357 attribute to 1 (power cycle of 357 attribute to 1 (power cycle of main power domain).
358 Before setting shutdown_unlock 358 Before setting shutdown_unlock to 1 it is recommended to
359 validate that system reboot ca 359 validate that system reboot cause is reset_asic_thermal or
360 reset_thermal_spc_or_pciesw. 360 reset_thermal_spc_or_pciesw.
361 In case shutdown_unlock is not 361 In case shutdown_unlock is not set 1, the only way to release
362 ASIC from locking - is full sy 362 ASIC from locking - is full system power cycle through the
363 external power distribution un 363 external power distribution unit.
364 Default is 1. 364 Default is 1.
365 365
366 The file is read/write. 366 The file is read/write.
367 367
368 What: /sys/devices/platform/mlxplat/ 368 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/cpld1_pn
369 What: /sys/devices/platform/mlxplat/ 369 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/cpld1_version
370 What: /sys/devices/platform/mlxplat/ 370 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/cpld1_version_min
371 Date: October 2021 371 Date: October 2021
372 KernelVersion: 5.16 372 KernelVersion: 5.16
373 Contact: Vadim Pasternak <vadimp@nvidia. 373 Contact: Vadim Pasternak <vadimp@nvidia.com>
374 Description: These files show with which CP 374 Description: These files show with which CPLD major and minor versions
375 and part number has been burne 375 and part number has been burned CPLD device on line card.
376 376
377 The files are read only. 377 The files are read only.
378 378
379 What: /sys/devices/platform/mlxplat/ 379 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/fpga1_pn
380 What: /sys/devices/platform/mlxplat/ 380 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/fpga1_version
381 What: /sys/devices/platform/mlxplat/ 381 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/fpga1_version_min
382 Date: October 2021 382 Date: October 2021
383 KernelVersion: 5.16 383 KernelVersion: 5.16
384 Contact: Vadim Pasternak <vadimp@nvidia. 384 Contact: Vadim Pasternak <vadimp@nvidia.com>
385 Description: These files show with which FP 385 Description: These files show with which FPGA major and minor versions
386 and part number has been burne 386 and part number has been burned FPGA device on line card.
387 387
388 The files are read only. 388 The files are read only.
389 389
390 What: /sys/devices/platform/mlxplat/ 390 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/vpd_wp
391 Date: October 2021 391 Date: October 2021
392 KernelVersion: 5.16 392 KernelVersion: 5.16
393 Contact: Vadim Pasternak <vadimp@nvidia. 393 Contact: Vadim Pasternak <vadimp@nvidia.com>
394 Description: This file allow to overwrite l 394 Description: This file allow to overwrite line card VPD hardware write
395 protection mode. When attribut 395 protection mode. When attribute is set 1 - write protection is
396 disabled, when 0 - enabled. 396 disabled, when 0 - enabled.
397 Default is 0. 397 Default is 0.
398 If the system is in locked-dow 398 If the system is in locked-down mode writing this file will not
399 be allowed. 399 be allowed.
400 The purpose if this file is to 400 The purpose if this file is to allow line card VPD burning
401 during production flow. 401 during production flow.
402 402
403 The file is read/write. 403 The file is read/write.
404 404
405 What: /sys/devices/platform/mlxplat/ 405 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/reset_aux_pwr_or_ref
406 What: /sys/devices/platform/mlxplat/ 406 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/reset_dc_dc_pwr_fail
407 What: /sys/devices/platform/mlxplat/ 407 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/reset_fpga_not_done
408 What: /sys/devices/platform/mlxplat/ 408 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/reset_from_chassis
409 What: /sys/devices/platform/mlxplat/ 409 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/reset_line_card
410 What: /sys/devices/platform/mlxplat/ 410 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/reset_pwr_off_from_chassis
411 Date: October 2021 411 Date: October 2021
412 KernelVersion: 5.16 412 KernelVersion: 5.16
413 Contact: Vadim Pasternak <vadimp@nvidia. 413 Contact: Vadim Pasternak <vadimp@nvidia.com>
414 Description: These files show the line rese 414 Description: These files show the line reset cause, as following: power
415 auxiliary outage or power refr 415 auxiliary outage or power refresh, DC-to-DC power failure, FPGA reset
416 failed, line card reset failed 416 failed, line card reset failed, power off from chassis.
417 Value 1 in file means this is 417 Value 1 in file means this is reset cause, 0 - otherwise. Only one of
418 the above causes could be 1 at 418 the above causes could be 1 at the same time, representing only last
419 reset cause. 419 reset cause.
420 420
421 The files are read only. 421 The files are read only.
422 422
423 What: /sys/devices/platform/mlxplat/ 423 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/cpld_upgrade_en
424 What: /sys/devices/platform/mlxplat/ 424 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/fpga_upgrade_en
425 Date: October 2021 425 Date: October 2021
426 KernelVersion: 5.16 426 KernelVersion: 5.16
427 Contact: Vadim Pasternak <vadimp@nvidia. 427 Contact: Vadim Pasternak <vadimp@nvidia.com>
428 Description: These files allow CPLD and FPG 428 Description: These files allow CPLD and FPGA burning. Value 1 in file means burning
429 is enabled, 0 - otherwise. 429 is enabled, 0 - otherwise.
430 If the system is in locked-dow 430 If the system is in locked-down mode writing these files will
431 not be allowed. 431 not be allowed.
432 The purpose of these files to 432 The purpose of these files to allow line card CPLD and FPGA
433 upgrade through the JTAG daisy 433 upgrade through the JTAG daisy-chain.
434 434
435 The files are read/write. 435 The files are read/write.
436 436
437 What: /sys/devices/platform/mlxplat/ 437 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/qsfp_pwr_en
438 What: /sys/devices/platform/mlxplat/ 438 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/pwr_en
439 Date: October 2021 439 Date: October 2021
440 KernelVersion: 5.16 440 KernelVersion: 5.16
441 Contact: Vadim Pasternak <vadimp@nvidia. 441 Contact: Vadim Pasternak <vadimp@nvidia.com>
442 Description: These files allow to power on/ 442 Description: These files allow to power on/off all QSFP ports and whole line card.
443 The attributes are set 1 for p 443 The attributes are set 1 for power on, 0 - for power off.
444 444
445 The files are read/write. 445 The files are read/write.
446 446
447 What: /sys/devices/platform/mlxplat/ 447 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/agb_spi_burn_en
448 What: /sys/devices/platform/mlxplat/ 448 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/fpga_spi_burn_en
449 Date: October 2021 449 Date: October 2021
450 KernelVersion: 5.16 450 KernelVersion: 5.16
451 Contact: Vadim Pasternak <vadimp@nvidia. 451 Contact: Vadim Pasternak <vadimp@nvidia.com>
452 Description: These files allow gearboxes an 452 Description: These files allow gearboxes and FPGA SPI flash burning.
453 The attributes are set 1 to en 453 The attributes are set 1 to enable burning, 0 - to disable.
454 If the system is in locked-dow 454 If the system is in locked-down mode writing these files will
455 not be allowed. 455 not be allowed.
456 The purpose of these files to 456 The purpose of these files to allow line card Gearboxes and FPGA
457 burning during production flow 457 burning during production flow.
458 458
459 The file is read/write. 459 The file is read/write.
460 460
461 What: /sys/devices/platform/mlxplat/ 461 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/max_power
462 What: /sys/devices/platform/mlxplat/ 462 What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/i2c-*/*-0032/mlxreg-io.*/hwmon/hwmon*/config
463 Date: October 2021 463 Date: October 2021
464 KernelVersion: 5.16 464 KernelVersion: 5.16
465 Contact: Vadim Pasternak <vadimp@nvidia. 465 Contact: Vadim Pasternak <vadimp@nvidia.com>
466 Description: These files provide the maximu 466 Description: These files provide the maximum powered required for line card
467 feeding and line card configur 467 feeding and line card configuration Id.
468 468
469 The files are read only. 469 The files are read only.
470 470
471 What: /sys/devices/platform/mlxplat/ 471 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/phy_reset
472 Date: May 2022 472 Date: May 2022
473 KernelVersion: 5.19 473 KernelVersion: 5.19
474 Contact: Vadim Pasternak <vadimp@nvidia. 474 Contact: Vadim Pasternak <vadimp@nvidia.com>
475 Description: This file allows to reset PHY 475 Description: This file allows to reset PHY 88E1548 when attribute is set 0
476 due to some abnormal PHY behav 476 due to some abnormal PHY behavior.
477 Expected behavior: 477 Expected behavior:
478 When phy_reset is written 1, a 478 When phy_reset is written 1, all PHY 88E1548 are released
479 from the reset state, when 0 - 479 from the reset state, when 0 - are hold in reset state.
480 480
481 The files are read/write. 481 The files are read/write.
482 482
483 What: /sys/devices/platform/mlxplat/ 483 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/mac_reset
484 Date: May 2022 484 Date: May 2022
485 KernelVersion: 5.19 485 KernelVersion: 5.19
486 Contact: Vadim Pasternak <vadimp@nvidia. 486 Contact: Vadim Pasternak <vadimp@nvidia.com>
487 Description: This file allows to reset ASIC 487 Description: This file allows to reset ASIC MT52132 when attribute is set 0
488 due to some abnormal ASIC beha 488 due to some abnormal ASIC behavior.
489 Expected behavior: 489 Expected behavior:
490 When mac_reset is written 1, t 490 When mac_reset is written 1, the ASIC MT52132 is released
491 from the reset state, when 0 - 491 from the reset state, when 0 - is hold in reset state.
492 492
493 The files are read/write. 493 The files are read/write.
494 494
495 What: /sys/devices/platform/mlxplat/ 495 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/qsfp_pwr_good
496 Date: May 2022 496 Date: May 2022
497 KernelVersion: 5.19 497 KernelVersion: 5.19
498 Contact: Vadim Pasternak <vadimp@nvidia. 498 Contact: Vadim Pasternak <vadimp@nvidia.com>
499 Description: This file shows QSFP ports pow 499 Description: This file shows QSFP ports power status. The value is set to 0
500 when one of any QSFP ports is 500 when one of any QSFP ports is plugged. The value is set to 1 when
501 there are no any QSFP ports ar 501 there are no any QSFP ports are plugged.
502 The possible values are: 502 The possible values are:
503 0 - Power good, 1 - Not power 503 0 - Power good, 1 - Not power good.
504 504
505 The files are read only. 505 The files are read only.
506 506
507 What: /sys/devices/platform/mlxplat/ 507 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic2_health
508 Date: July 2022 508 Date: July 2022
509 KernelVersion: 5.20 509 KernelVersion: 5.20
510 Contact: Vadim Pasternak <vadimp@nvidia. 510 Contact: Vadim Pasternak <vadimp@nvidia.com>
511 Description: This file shows 2-nd ASIC heal 511 Description: This file shows 2-nd ASIC health status. The possible values are:
512 0 - health failed, 2 - health 512 0 - health failed, 2 - health OK, 3 - ASIC in booting state.
513 513
514 The file is read only. 514 The file is read only.
515 515
516 What: /sys/devices/platform/mlxplat/ 516 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic_reset
517 What: /sys/devices/platform/mlxplat/ 517 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic2_reset
518 Date: July 2022 518 Date: July 2022
519 KernelVersion: 5.20 519 KernelVersion: 5.20
520 Contact: Vadim Pasternak <vadimp@nvidia. 520 Contact: Vadim Pasternak <vadimp@nvidia.com>
521 Description: These files allow to each of A 521 Description: These files allow to each of ASICs by writing 1.
522 522
523 The files are write only. 523 The files are write only.
524 524
525 What: /sys/devices/platform/mlxplat/ 525 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/comm_chnl_ready
526 Date: July 2022 526 Date: July 2022
527 KernelVersion: 5.20 527 KernelVersion: 5.20
528 Contact: Vadim Pasternak <vadimp@nvidia. 528 Contact: Vadim Pasternak <vadimp@nvidia.com>
529 Description: This file is used to indicate 529 Description: This file is used to indicate remote end (for example BMC) that system
530 host CPU is ready for sending 530 host CPU is ready for sending telemetry data to remote end.
531 For indication the file should 531 For indication the file should be written 1.
532 532
533 The file is write only. 533 The file is write only.
534 534
535 What: /sys/devices/platform/mlxplat/ 535 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/config3
536 Date: January 2020 536 Date: January 2020
537 KernelVersion: 5.6 537 KernelVersion: 5.6
538 Contact: Vadim Pasternak <vadimp@nvidia. 538 Contact: Vadim Pasternak <vadimp@nvidia.com>
539 Description: The file indicates COME module 539 Description: The file indicates COME module hardware configuration.
540 The value is pushed by hardwar 540 The value is pushed by hardware through GPIO pins.
541 The purpose is to expose some 541 The purpose is to expose some minor BOM changes for the same system SKU.
542 542
543 The file is read only. 543 The file is read only.
544 544
545 What: /sys/devices/platform/mlxplat/ 545 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_pwr_converter_fail
546 Date: February 2023 546 Date: February 2023
547 KernelVersion: 6.3 547 KernelVersion: 6.3
548 Contact: Vadim Pasternak <vadimp@nvidia. 548 Contact: Vadim Pasternak <vadimp@nvidia.com>
549 Description: This file shows the system res 549 Description: This file shows the system reset cause due to power converter
550 devices failure. 550 devices failure.
551 Value 1 in file means this is 551 Value 1 in file means this is reset cause, 0 - otherwise.
552 552
553 The file is read only. 553 The file is read only.
554 554
555 What: /sys/devices/platform/mlxplat/ 555 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot1_ap_reset
556 What: /sys/devices/platform/mlxplat/ 556 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot2_ap_reset
557 Date: February 2023 557 Date: February 2023
558 KernelVersion: 6.3 558 KernelVersion: 6.3
559 Contact: Vadim Pasternak <vadimp@nvidia. 559 Contact: Vadim Pasternak <vadimp@nvidia.com>
560 Description: These files aim to monitor the 560 Description: These files aim to monitor the status of the External Root of Trust (EROT)
561 processor's RESET output to th 561 processor's RESET output to the Application Processor (AP).
562 By reading this file, could be 562 By reading this file, could be determined if the EROT has invalidated or
563 revoked AP Firmware, at which 563 revoked AP Firmware, at which point it will hold the AP in RESET until a
564 valid firmware is loaded. This 564 valid firmware is loaded. This protects the AP from running an
565 unauthorized firmware. In the 565 unauthorized firmware. In the normal flow, the AP reset should be released
566 after the EROT validates the i 566 after the EROT validates the integrity of the FW, and it should be done so
567 as quickly as possible so that 567 as quickly as possible so that the AP boots before the CPU starts to
568 communicate to each ASIC. 568 communicate to each ASIC.
569 569
570 The files are read only. 570 The files are read only.
571 571
572 What: /sys/devices/platform/mlxplat/ 572 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot1_recovery
573 What: /sys/devices/platform/mlxplat/ 573 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot2_recovery
574 What: /sys/devices/platform/mlxplat/ 574 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot1_reset
575 What: /sys/devices/platform/mlxplat/ 575 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot2_reset
576 Date: February 2023 576 Date: February 2023
577 KernelVersion: 6.3 577 KernelVersion: 6.3
578 Contact: Vadim Pasternak <vadimp@nvidia. 578 Contact: Vadim Pasternak <vadimp@nvidia.com>
579 Description: These files aim to perform Ext 579 Description: These files aim to perform External Root of Trust (EROT) recovery
580 sequence after EROT device fai 580 sequence after EROT device failure.
581 These EROT devices protect ASI 581 These EROT devices protect ASICs from unauthorized access and in normal
582 flow their reset should be rel 582 flow their reset should be released with system power – earliest power
583 up stage, so that EROTs can be 583 up stage, so that EROTs can begin boot and authentication process before
584 CPU starts to communicate to A 584 CPU starts to communicate to ASICs.
585 Issuing a reset to the EROT wh 585 Issuing a reset to the EROT while asserting the recovery signal will cause
586 the EROT Application Processor 586 the EROT Application Processor to enter recovery mode so that the EROT FW
587 can be updated/recovered. 587 can be updated/recovered.
588 For reset/recovery the related 588 For reset/recovery the related file should be toggled by 1/0.
589 589
590 The files are read/write. 590 The files are read/write.
591 591
592 What: /sys/devices/platform/mlxplat/ 592 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot1_wp
593 What: /sys/devices/platform/mlxplat/ 593 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot2_wp
594 Date: February 2023 594 Date: February 2023
595 KernelVersion: 6.3 595 KernelVersion: 6.3
596 Contact: Vadim Pasternak <vadimp@nvidia. 596 Contact: Vadim Pasternak <vadimp@nvidia.com>
597 Description: These files allow access to Ex 597 Description: These files allow access to External Root of Trust (EROT) for reset
598 and recovery sequence after ER 598 and recovery sequence after EROT device failure.
599 Default is 0 (programming disa 599 Default is 0 (programming disabled).
600 If the system is in locked-dow 600 If the system is in locked-down mode writing this file will not be allowed.
601 601
602 The files are read/write. 602 The files are read/write.
603 603
604 What: /sys/devices/platform/mlxplat/ 604 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/spi_chnl_select
605 Date: February 2023 605 Date: February 2023
606 KernelVersion: 6.3 606 KernelVersion: 6.3
607 Contact: Vadim Pasternak <vadimp@nvidia. 607 Contact: Vadim Pasternak <vadimp@nvidia.com>
608 Description: This file allows SPI chip sele 608 Description: This file allows SPI chip selection for External Root of Trust (EROT)
609 device Out-of-Band recovery. 609 device Out-of-Band recovery.
610 File can be written with 0 or 610 File can be written with 0 or with 1. It selects which EROT can be accessed
611 through SPI device. 611 through SPI device.
612 612
613 The file is read/write. 613 The file is read/write.
614 614
615 What: /sys/devices/platform/mlxplat/ 615 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic_pg_fail
616 Date: February 2023 616 Date: February 2023
617 KernelVersion: 6.3 617 KernelVersion: 6.3
618 Contact: Vadim Pasternak vadimp@nvidia. 618 Contact: Vadim Pasternak vadimp@nvidia.com
619 Description: This file shows ASIC Power Goo 619 Description: This file shows ASIC Power Good status.
620 Value 1 in file means ASIC Pow 620 Value 1 in file means ASIC Power Good failed, 0 - otherwise.
621 621
622 The file is read only. 622 The file is read only.
623 623
624 What: /sys/devices/platform/mlxplat/ 624 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/clk_brd1_boot_fail
625 What: /sys/devices/platform/mlxplat/ 625 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/clk_brd2_boot_fail
626 What: /sys/devices/platform/mlxplat/ 626 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/clk_brd_fail
627 Date: February 2023 627 Date: February 2023
628 KernelVersion: 6.3 628 KernelVersion: 6.3
629 Contact: Vadim Pasternak vadimp@nvidia. 629 Contact: Vadim Pasternak vadimp@nvidia.com
630 Description: These files are related to clo 630 Description: These files are related to clock boards status in system.
631 - clk_brd1_boot_fail: warning 631 - clk_brd1_boot_fail: warning about 1-st clock board failed to boot from CI.
632 - clk_brd2_boot_fail: warning 632 - clk_brd2_boot_fail: warning about 2-nd clock board failed to boot from CI.
633 - clk_brd_fail: error about co 633 - clk_brd_fail: error about common clock board boot failure.
634 634
635 The files are read only. 635 The files are read only.
636 636
637 What: /sys/devices/platform/mlxplat/ 637 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/clk_brd_prog_en
638 Date: February 2023 638 Date: February 2023
639 KernelVersion: 6.3 639 KernelVersion: 6.3
640 Contact: Vadim Pasternak <vadimp@nvidia. 640 Contact: Vadim Pasternak <vadimp@nvidia.com>
641 Description: This file enables programming 641 Description: This file enables programming of clock boards.
642 Default is 0 (programming disa 642 Default is 0 (programming disabled).
643 If the system is in locked-dow 643 If the system is in locked-down mode writing this file will not be allowed.
644 644
645 The file is read/write. 645 The file is read/write.
646 646
647 What: /sys/devices/platform/mlxplat/ 647 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pwr_converter_prog_en
648 Date: February 2023 648 Date: February 2023
649 KernelVersion: 6.3 649 KernelVersion: 6.3
650 Contact: Vadim Pasternak <vadimp@nvidia. 650 Contact: Vadim Pasternak <vadimp@nvidia.com>
651 Description: This file enables programming 651 Description: This file enables programming of power converters.
652 Default is 0 (programming disa 652 Default is 0 (programming disabled).
653 If the system is in locked-dow 653 If the system is in locked-down mode writing this file will not be allowed.
654 654
655 The file is read/write. 655 The file is read/write.
656 656
657 What: /sys/devices/platform/mlxplat/ 657 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_ac_ok_fail
658 Date: February 2023 658 Date: February 2023
659 KernelVersion: 6.3 659 KernelVersion: 6.3
660 Contact: Vadim Pasternak <vadimp@nvidia. 660 Contact: Vadim Pasternak <vadimp@nvidia.com>
661 Description: This file shows the system res 661 Description: This file shows the system reset cause due to AC power failure.
662 Value 1 in file means this is 662 Value 1 in file means this is reset cause, 0 - otherwise.
663 663
664 The file is read only. 664 The file is read only.
665 665
666 What: /sys/devices/platform/mlxplat/ 666 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld5_pn
667 What: /sys/devices/platform/mlxplat/ 667 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld5_version
668 What: /sys/devices/platform/mlxplat/ 668 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld5_version_min
669 Date: August 2023 669 Date: August 2023
670 KernelVersion: 6.6 670 KernelVersion: 6.6
671 Contact: Vadim Pasternak <vadimp@nvidia. 671 Contact: Vadim Pasternak <vadimp@nvidia.com>
672 Description: These files show with which CP 672 Description: These files show with which CPLD part numbers, version and minor
673 versions have been burned the 673 versions have been burned the 5-th CPLD device equipped on a
674 system. 674 system.
675 675
676 The files are read only. 676 The files are read only.
677 677
678 What: /sys/devices/platform/mlxplat/ 678 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/jtag_cap
679 Date: August 2023 679 Date: August 2023
680 KernelVersion: 6.6 680 KernelVersion: 6.6
681 Contact: Vadim Pasternak <vadimp@nvidia. 681 Contact: Vadim Pasternak <vadimp@nvidia.com>
682 Description: This file indicates the availa 682 Description: This file indicates the available method of CPLD/FPGA devices
683 field update through the JTAG 683 field update through the JTAG chain:
684 684
685 b00 - field update through LPC 685 b00 - field update through LPC bus register memory space.
686 b01 - Reserved. 686 b01 - Reserved.
687 b10 - Reserved. 687 b10 - Reserved.
688 b11 - field update through CPU 688 b11 - field update through CPU GPIOs bit-banging.
689 689
690 The file is read only. 690 The file is read only.
691 691
692 What: /sys/devices/platform/mlxplat/ 692 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lid_open
693 Date: August 2023 693 Date: August 2023
694 KernelVersion: 6.6 694 KernelVersion: 6.6
695 Contact: Vadim Pasternak <vadimp@nvidia. 695 Contact: Vadim Pasternak <vadimp@nvidia.com>
696 Description: 1 - indicates that system lid 696 Description: 1 - indicates that system lid is opened, otherwise 0.
697 697
698 The file is read only. 698 The file is read only.
699 699
700 What: /sys/devices/platform/mlxplat/ 700 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_long_pwr_pb
701 Date: August 2023 701 Date: August 2023
702 KernelVersion: 6.6 702 KernelVersion: 6.6
703 Contact: Vadim Pasternak <vadimp@nvidia. 703 Contact: Vadim Pasternak <vadimp@nvidia.com>
704 Description: This file if set 1 indicates t 704 Description: This file if set 1 indicates that system has been reset by
705 long press of power button. 705 long press of power button.
706 706
707 The file is read only. 707 The file is read only.
708 708
709 What: /sys/devices/platform/mlxplat/ 709 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_swb_dc_dc_pwr_fail
710 Date: August 2023 710 Date: August 2023
711 KernelVersion: 6.6 711 KernelVersion: 6.6
712 Contact: Vadim Pasternak <vadimp@nvidia. 712 Contact: Vadim Pasternak <vadimp@nvidia.com>
713 Description: This file shows 1 in case the 713 Description: This file shows 1 in case the system reset happened due to the
714 failure of any DC-DC power con 714 failure of any DC-DC power converter devices equipped on the
715 switch board. 715 switch board.
716 716
717 The file is read only. 717 The file is read only.
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