1 What: /sys/class/firmware/.../data
2 Date: July 2022
3 KernelVersion: 5.19
4 Contact: Russ Weight <russ.weight@linux.
5 Description: The data sysfs file is used fo
6 firmware uploads. Cat a firmwa
7 after you echo 1 to the loadin
8 image write is complete, echo
9 sequence will signal the compl
10 signal the lower-level driver
11 available.
12
13 What: /sys/class/firmware/.../cancel
14 Date: July 2022
15 KernelVersion: 5.19
16 Contact: Russ Weight <russ.weight@linux.
17 Description: Write-only. For firmware uploa
18 request that the transfer of f
19 device be canceled. This reque
20 the update cannot be canceled
21 progress) or (ENODEV) if there
22
23 What: /sys/class/firmware/.../error
24 Date: July 2022
25 KernelVersion: 5.19
26 Contact: Russ Weight <russ.weight@linux.
27 Description: Read-only. Returns a string de
28 upload. This string will be in
29 where <STATUS> will be one of
30 for the status sysfs file and
31 following: "hw-error", "timeou
32 "invalid-file-size", "read-wri
33 error sysfs file is only meani
34 upload status is "idle". If th
35 transfer is in progress, then
36
37 What: /sys/class/firmware/.../loadin
38 Date: July 2022
39 KernelVersion: 5.19
40 Contact: Russ Weight <russ.weight@linux.
41 Description: The loading sysfs file is used
42 for firmware uploads. Echo 1 o
43 you are writing a firmware fil
44 -1 onto this file to abort the
45 file to indicate that the writ
46 uploads, the zero value also t
47 firmware data to the lower-lev
48
49 What: /sys/class/firmware/.../remain
50 Date: July 2022
51 KernelVersion: 5.19
52 Contact: Russ Weight <russ.weight@linux.
53 Description: Read-only. For firmware upload
54 of the firmware data that rema
55 lower-level device driver. The
56 the full size of the firmware
57 written to the data sysfs file
58 updated during the "transferri
59 upload.
60 Format: "%u".
61
62 What: /sys/class/firmware/.../status
63 Date: July 2022
64 KernelVersion: 5.19
65 Contact: Russ Weight <russ.weight@linux.
66 Description: Read-only. Returns a string de
67 a firmware upload. The string
68 idle, "receiving", "preparing"
69
70 What: /sys/class/firmware/.../timeou
71 Date: July 2022
72 KernelVersion: 5.19
73 Contact: Russ Weight <russ.weight@linux.
74 Description: This file supports the timeout
75 fallback. This file has no af
76 more information on timeouts p
77 for firmware fallback.
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