2017-02-06 15:26 GMT+01:00 Lars-Peter Clausen <lars@xxxxxxxxxx>: > On 02/06/2017 03:21 PM, Benjamin Gaignard wrote: >> Thoses patches add parent_trigger attribute to IIO triggers. >> The goal is to allow triggers to use triggers like is this done for iio >> devices. >> With this patch it will be possible to chain triggers, for example >> stm32 triggers could be used as clock of an other triggers: >> echo "tim1_trgo" > trigger0/parent_trigger. > > Can you explain how this is different to assigning the parent_trigger > directly to the device? > It is the same but done on trigger structure without need to have an iio device. While writing stm32 trigger driver Jonathan explain me that I can't use an iio device without channel to chain my hardware blocks. Since my hardware allows to chain triggers, Jonathan suggest to create this parent_trigger attribute to ab able to link the triggers. -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
