1 What: /sys/class/leds/<led>/pattern
5 Specify a software pattern for the LED, that supports altering
6 the brightness for the specified duration with one software
7 timer. It can do gradual dimming and step change of brightness.
9 The pattern is given by a series of tuples, of brightness and
12 The exact format is described in:
13 Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
15 What: /sys/class/leds/<led>/hr_pattern
18 Specify a software pattern for the LED, that supports altering
19 the brightness for the specified duration with one software
20 timer. It can do gradual dimming and step change of brightness.
22 Unlike the /sys/class/leds/<led>/pattern, this attribute runs
23 a pattern on high-resolution timer (hrtimer).
25 What: /sys/class/leds/<led>/hw_pattern
29 Specify a hardware pattern for the LED, for LED hardware that
30 supports autonomously controlling brightness over time, according
31 to some preprogrammed hardware patterns. It deactivates any active
34 Since different LED hardware can have different semantics of
35 hardware patterns, each driver is expected to provide its own
36 description for the hardware patterns in their documentation
37 file at Documentation/leds/.
39 What: /sys/class/leds/<led>/repeat
43 Specify a pattern repeat number. -1 means repeat indefinitely,
44 other negative numbers and number 0 are invalid.
46 This file will always return the originally written repeat
49 It should be noticed that some leds, like EL15203000 may
50 only support indefinitely patterns, so they always store -1.