From patchwork Fri Jun 16 15:58:45 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrice Gasnier X-Patchwork-Id: 776833 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 3wq4r66zRQz9s8Y for ; Sat, 17 Jun 2017 02:01:58 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752654AbdFPQBs (ORCPT ); Fri, 16 Jun 2017 12:01:48 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:9282 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752294AbdFPQAI (ORCPT ); Fri, 16 Jun 2017 12:00:08 -0400 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx08-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v5GFxMaN016716; Fri, 16 Jun 2017 17:59:36 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-.pphosted.com with ESMTP id 2b3ahjc590-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 16 Jun 2017 17:59:36 +0200 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 E162834; Fri, 16 Jun 2017 15:59:35 +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 C2F1B27BA; Fri, 16 Jun 2017 15:59:35 +0000 (GMT) Received: from localhost (10.75.127.45) by SFHDAG5NODE3.st.com (10.75.127.15) with Microsoft SMTP Server (TLS) id 15.0.1178.4; Fri, 16 Jun 2017 17:59:35 +0200 From: Fabrice Gasnier To: , , , , CC: , , , , , , , , , Subject: [PATCH 7/8] dt-bindings: iio: Add STM32 LPTimer quadrature encoder and counter Date: Fri, 16 Jun 2017 17:58:45 +0200 Message-ID: <1497628726-7563-8-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1497628726-7563-1-git-send-email-fabrice.gasnier@st.com> References: <1497628726-7563-1-git-send-email-fabrice.gasnier@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.45] X-ClientProxiedBy: SFHDAG6NODE2.st.com (10.75.127.17) To SFHDAG5NODE3.st.com (10.75.127.15) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-06-16_09:, , signatures=0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add documentation for STMicroelectronics STM32 Low Power Timer quadrature encoder and counter binding. Signed-off-by: Fabrice Gasnier --- .../bindings/iio/counter/stm32-lptimer-cnt.txt | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt diff --git a/Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt b/Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt new file mode 100644 index 0000000..e31e54d --- /dev/null +++ b/Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt @@ -0,0 +1,25 @@ +STMicroelectronics STM32 Low Power Timer quadrature encoder and counter + +STM32 LP Timer provides several counter modes. It can be used as: +- quadrature encoder to detect angular position and direction of rotary + elements, from IN1 and IN2 input signals. +- simple counter from IN1 input signal. + +Must be a sub-node of an STM32 LP Timer device tree node. +See ../mfd/stm32-lptimer.txt for details about the parent node. + +Required properties: +- compatible: Must be "st,stm32-lptimer-counter". +- A pinctrl state named "default" can be defined to set IN1/IN2 pins in mode + of operation for LP Timer input signals on external pin. + +Example: + lptimer1: lptimer@0x40002400 { + compatible = "st,stm32-lptimer"; + ... + counter { + compatible = "st,stm32-lptimer-counter"; + pinctrl-names = "default"; + pinctrl-0 = <&lptim1_in_pins>; + }; + };