xref: /linux/Documentation/ABI/testing/sysfs-devices-platform-docg3 (revision 724ec7c190c1893ea55fd7143e7e1c8c5b61a0e7)
1What:		/sys/devices/platform/docg3/f[0-3]_dps[01]_is_keylocked
2Date:		November 2011
3KernelVersion:	3.3
4Contact:	Robert Jarzmik <robert.jarzmik@free.fr>
5Description:
6		Show whether the floor (0 to 4), protection area (0 or 1) is
7		keylocked. Each docg3 chip (or floor) has 2 protection areas,
8		which can cover any part of it, block aligned, called DPS.
9		The protection has information embedded whether it blocks reads,
10		writes or both.
11		The result is:
12
13		- 0 -> the DPS is not keylocked
14		- 1 -> the DPS is keylocked
15
16Users:		None identified so far.
17
18What:		/sys/devices/platform/docg3/f[0-3]_dps[01]_protection_key
19Date:		November 2011
20KernelVersion:	3.3
21Contact:	Robert Jarzmik <robert.jarzmik@free.fr>
22Description:
23		Enter the protection key for the floor (0 to 4), protection area
24		(0 or 1). Each docg3 chip (or floor) has 2 protection areas,
25		which can cover any part of it, block aligned, called DPS.
26		The protection has information embedded whether it blocks reads,
27		writes or both.
28		The protection key is a string of 8 bytes (value 0-255).
29		Entering the correct value toggle the lock, and can be observed
30		through f[0-3]_dps[01]_is_keylocked.
31		Possible values are:
32
33			- 8 bytes
34
35		Typical values are:
36
37			- "00000000"
38			- "12345678"
39
40Users:		None identified so far.
41