From patchwork Fri Feb 17 16:03:46 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrice Gasnier X-Patchwork-Id: 729219 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3vPyZ45LW7z9s85 for ; Sat, 18 Feb 2017 03:06:20 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934536AbdBQQFL (ORCPT ); Fri, 17 Feb 2017 11:05:11 -0500 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:58351 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934337AbdBQQFJ (ORCPT ); Fri, 17 Feb 2017 11:05:09 -0500 Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by m0046037.ppops.net (8.16.0.11/8.16.0.11) with SMTP id v1HFx860013885; Fri, 17 Feb 2017 17:04:03 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-.pphosted.com with ESMTP id 28hs8x43dm-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 17 Feb 2017 17:04:03 +0100 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 5A84038; Fri, 17 Feb 2017 16:04:02 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag5node3.st.com [10.75.127.15]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 25D6F26EA; Fri, 17 Feb 2017 16:04:02 +0000 (GMT) Received: from localhost (10.75.127.46) by SFHDAG5NODE3.st.com (10.75.127.15) with Microsoft SMTP Server (TLS) id 15.0.1178.4; Fri, 17 Feb 2017 17:04:01 +0100 From: Fabrice Gasnier To: , , , , , CC: , , , , , , , , , , Subject: [RFC 1/4] dt-bindings: iio: introduce trigger providers, consumers Date: Fri, 17 Feb 2017 17:03:46 +0100 Message-ID: <1487347429-31761-2-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1487347429-31761-1-git-send-email-fabrice.gasnier@st.com> References: <1487347429-31761-1-git-send-email-fabrice.gasnier@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.46] X-ClientProxiedBy: SFHDAG3NODE1.st.com (10.75.127.7) To SFHDAG5NODE3.st.com (10.75.127.15) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-02-17_13:, , signatures=0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Document iio provider and consumer bindings. Signed-off-by: Fabrice Gasnier --- .../devicetree/bindings/iio/iio-bindings.txt | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/iio-bindings.txt b/Documentation/devicetree/bindings/iio/iio-bindings.txt index 68d6f8c..3125390 100644 --- a/Documentation/devicetree/bindings/iio/iio-bindings.txt +++ b/Documentation/devicetree/bindings/iio/iio-bindings.txt @@ -95,3 +95,40 @@ vdd channel is connected to output 0 of the &ref device. io-channels = <&adc 10>, <&adc 11>; io-channel-names = "adc1", "adc2"; }; + +==IIO trigger providers== +Sources of IIO triggers can be represented by any node in the device +tree. Those nodes are designated as IIO trigger providers. IIO trigger +consumer uses a phandle and an IIO trigger specifier to connect to an +IIO trigger provider. +An IIO trigger specifier is an array of one or more cells identifying +the IIO trigger output on a device. The length of an IIO trigger +specifier is defined by the value of a #io-trigger-cells property in +the IIO trigger provider node. + +Required properties: +#io-trigger-cells: + Number of cells in an IIO trigger specifier; Typically + 0 for nodes with a simple IIO trigger output. + +Example: + gpiotrig0: iio-gpio-trigger0 { + #io-trigger-cells = <0>; + compatible = "iio-gpio-trigger"; + gpios = <&gpioa 11 0>; + } + +==IIO trigger consumers== +Required properties: +- io-triggers: List of phandle representing the IIO trigger specifier. + +Optional properties: +- io-trigger-names : + List of IIO trigger name strings that matches elements + in 'io-triggers' list property. + +Example: + some_trigger_consumer { + io-triggers = <&gpiotrig0>; + io-trigger-names = "mytrig"; + }