1Input: sysrq reset sequence
2
3A simple binding to represent a set of keys as described in
4include/uapi/linux/input.h. This is to communicate a sequence of keys to the
5sysrq driver. Upon holding the keys for a specified amount of time (if
6specified) the system is sync'ed and reset.
7
8Key sequences are global to the system but all the keys in a set must be coming
9from the same input device.
10
11The /chosen node should contain a 'linux,sysrq-reset-seq' child node to define
12a set of keys.
13
14Required property:
15sysrq-reset-seq: array of Linux keycodes, one keycode per cell.
16
17Optional property:
18timeout-ms: duration keys must be pressed together in milliseconds before
19generating a sysrq. If omitted the system is rebooted immediately when a valid
20sequence has been recognized.
21
22Example:
23
24 chosen {
25                linux,sysrq-reset-seq {
26                        keyset = <0x03
27                                  0x04
28                                  0x0a>;
29                        timeout-ms = <3000>;
30                };
31         };
32
33Would represent KEY_2, KEY_3 and KEY_9.
34