Hi, Changes since v4: 1. Move helper to get default pattern from led-class.c to led-core.c and rename it (build issue pointed by kbuild robot). Changes since v3: 1. Add missing EXPORT_SYMBOL_GPL. 2. Put pattern trigger format into common file - shared between dt-bindings and sysfs. 3. Use array of integers as led-pattern property (since it is bigger change I did not add Pavel's ack to patch 2/5). 4. Mention ms units for led-pattern bindings. Changes since v2: 1. Drop Jacek's patches and my "led: triggers: Initialize LED_INIT_DEFAULT_TRIGGER if trigger is brought after class". 2. Follow Rob's advices about bindings - use "led-pattern" property and generalize usage of it into to three triggers. 3. New patches (2/5, 4/5 and 5/5). Changes since v1: 1. Rebase on Jacek's patches. 2. Add patch 3/5 for fixup of Jacek's solution. 3. Drop first two patches from the series (applied). 4. Patch 5/5: Use LED_INIT_DEFAULT_TRIGGER (suggested by Jacek Anaszewski). 5. Patch 5/5: Return-on-error and log warning (suggested by Pavel Machek). Best regards, Krzysztof Krzysztof Kozlowski (5): dt-bindings: leds: Add pattern initialization from Device Tree leds: Add helper for getting default pattern from Device Tree leds: trigger: pattern: Add pattern initialization from Device Tree leds: trigger: oneshot: Add initialization from Device Tree leds: trigger: timer: Add initialization from Device Tree .../testing/sysfs-class-led-trigger-pattern | 51 +--------- .../devicetree/bindings/leds/common.txt | 12 +++ .../bindings/leds/leds-trigger-pattern.txt | 49 +++++++++ drivers/leds/led-core.c | 43 ++++++++ drivers/leds/trigger/ledtrig-oneshot.c | 38 ++++++- drivers/leds/trigger/ledtrig-pattern.c | 99 +++++++++++++++---- drivers/leds/trigger/ledtrig-timer.c | 34 +++++++ include/linux/leds.h | 3 + 8 files changed, 260 insertions(+), 69 deletions(-) create mode 100644 Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt -- 2.17.1