blob: aa89adf18bc55bee2a15c5f73015532ab01d6834 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
What: /sys/bus/nvmem/devices/.../force_ro
Date: June 2024
KernelVersion: 6.11
Contact: Marek Vasut <marex@denx.de>
Description:
This read/write attribute allows users to set read-write
devices as read-only and back to read-write from userspace.
This can be used to unlock and relock write-protection of
devices which are generally locked, except during sporadic
programming operation.
Read returns '0' or '1' for read-write or read-only modes
respectively.
Write parses one of 'YyTt1NnFf0', or [oO][NnFf] for "on"
and "off", i.e. what kstrbool() supports.
Note: This file is only present if CONFIG_NVMEM_SYSFS
is enabled.
What: /sys/bus/nvmem/devices/.../nvmem
Date: July 2015
KernelVersion: 4.2
Contact: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Description:
This file allows user to read/write the raw NVMEM contents.
Permissions for write to this file depends on the nvmem
provider configuration.
Note: This file is only present if CONFIG_NVMEM_SYSFS
is enabled
ex::
hexdump /sys/bus/nvmem/devices/qfprom0/nvmem
0000000 0000 0000 0000 0000 0000 0000 0000 0000
*
00000a0 db10 2240 0000 e000 0c00 0c00 0000 0c00
0000000 0000 0000 0000 0000 0000 0000 0000 0000
...
*
0001000
What: /sys/bus/nvmem/devices/.../type
Date: November 2018
KernelVersion: 5.0
Contact: Alexandre Belloni <alexandre.belloni@bootlin.com>
Description:
This read-only attribute allows user to read the NVMEM
device type. Supported types are "Unknown", "EEPROM",
"OTP", "Battery backed", "FRAM".
Note: This file is only present if CONFIG_NVMEM_SYSFS
is enabled.
|
