Re: [PATCH v1 0/2] iio: Add parent_trigger attribute to triggers

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?