From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753699AbdBFO0S (ORCPT ); Mon, 6 Feb 2017 09:26:18 -0500 Received: from www381.your-server.de ([78.46.137.84]:45865 "EHLO www381.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751854AbdBFO0R (ORCPT ); Mon, 6 Feb 2017 09:26:17 -0500 Subject: Re: [PATCH v1 0/2] iio: Add parent_trigger attribute to triggers To: Benjamin Gaignard , linux-kernel@vger.kernel.org, jic23@kernel.org, linux-iio@vger.kernel.org, knaack.h@gmx.de, pmeerw@pmeerw.net References: <1486390912-24362-1-git-send-email-benjamin.gaignard@st.com> Cc: fabrice.gasnier@st.com, linaro-kernel@lists.linaro.org, Benjamin Gaignard From: Lars-Peter Clausen Message-ID: Date: Mon, 6 Feb 2017 15:26:12 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Icedove/45.6.0 MIME-Version: 1.0 In-Reply-To: <1486390912-24362-1-git-send-email-benjamin.gaignard@st.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Authenticated-Sender: lars@metafoo.de Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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?