Documentation/ABI/testing/sysfs-class-led-trigger-pattern

   1 What:           /sys/class/leds/<led>/pattern
   2 Date:           September 2018
   3 KernelVersion:  4.20
   4 Description:
   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.
   8
   9                 The pattern is given by a series of tuples, of brightness and
  10                 duration (ms).
  11
  12                 The exact format is described in:
  13                 Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
  14
  15 What:           /sys/class/leds/<led>/hw_pattern
  16 Date:           September 2018
  17 KernelVersion:  4.20
  18 Description:
  19                 Specify a hardware pattern for the LED, for LED hardware that
  20                 supports autonomously controlling brightness over time, according
  21                 to some preprogrammed hardware patterns. It deactivates any active
  22                 software pattern.
  23
  24                 Since different LED hardware can have different semantics of
  25                 hardware patterns, each driver is expected to provide its own
  26                 description for the hardware patterns in their documentation
  27                 file at Documentation/leds/.
  28
  29 What:           /sys/class/leds/<led>/repeat
  30 Date:           September 2018
  31 KernelVersion:  4.20
  32 Description:
  33                 Specify a pattern repeat number. -1 means repeat indefinitely,
  34                 other negative numbers and number 0 are invalid.
  35
  36                 This file will always return the originally written repeat
  37                 number.