1What:		/sys/class/leds/<led>/hw_pattern
2Date:		September 2018
3KernelVersion:	4.20
4Description:
5		Specify a hardware pattern for the SC27XX LED. For the SC27XX
6		LED controller, it only supports 4 stages to make a single
7		hardware pattern, which is used to configure the rise time,
8		high time, fall time and low time for the breathing mode.
9
10		For the breathing mode, the SC27XX LED only expects one brightness
11		for the high stage. To be compatible with the hardware pattern
12		format, we should set brightness as 0 for rise stage, fall
13		stage and low stage.
14
15		Min stage duration: 125 ms
16		Max stage duration: 31875 ms
17
18		Since the stage duration step is 125 ms, the duration should be
19		a multiplier of 125, like 125ms, 250ms, 375ms, 500ms ... 31875ms.
20
21		Thus the format of the hardware pattern values should be:
22		"0 rise_duration brightness high_duration 0 fall_duration 0 low_duration".
23